MODULARIZED FRAMEWORK STRUCTURE AND UNIT MODULE FOR USE IN THE SAME
A modularized framework structure of a three-dimensional truss structure is obtained as a result of making unit modules and interconnecting the unit modules. Each of the unit modules is made of frames, having elongated joining surfaces and connected mutually at end portions, to conform to a regular tetrahedron or octahedron. The elongated joining surfaces are obtained as a result of planarly truncating surfaces of edges of the frames corresponding to ridgelines of the regular tetrahedron or octahedron such that the elongated joining surfaces can be joined mutually, and the elongated joining surfaces are oriented orthogonally to perpendiculars drawn from the center to the corner centers of the elongated joining surfaces to form a Tetra- or Octa-module. The unit modules as the Tetra- or Octa-module are interconnected by joining mutually the elongated joining surfaces of the frames thereby to form the three-dimensional truss structure.
This is a continuation application of International Patent Application No. PCT/JP2022/041633 filed on Nov. 9, 2022 claiming priority to Japanese Patent Application No. 2021-188771 filed on Nov. 19, 2021, the entire contents of both of which are incorporated herein by reference.
BACKGROUND Technical FieldThe present invention relates to a modularized framework structure of a three-dimensional truss structure and a module unit for use in the same.
Description of the Related ArtA truss structured framework used for a roof, sidewall, or floor constructed by combining three-dimensional truss structured unit modules, each formed in a regular tetrahedral or octahedral shape by members congruent in shape with each other, consists of such shaped members, and thereby, material management and construction procedures can be simplified. Further, the modularization of the members can enhance efficiencies of construction operation.
For example, an octet truss structure disclosed in Patent Document 1 was proposed by Mr. Richard Buckminster Fuller. It is disclosed in Patent Document 1 that a three-dimensional truss structured modules, each having a shape of regular tetrahedron or octahedron and formed by combining members congruent in shape with each other, are interconnected so as to form a roof, sidewall, and the like.
Patent Document 1: U.S. Pat. No. 2,986,241
In Patent Document 1, an octet truss structure is described as a flat or layered vector equilibrium body. In
It is to be noted that, as described for example in Patent Documents 2, 3, there have been many proposals of the octet truss structure conventionally. More specifically, frames (chord members) are combined with joints (joint members) thereby to form a three-dimensional truss structured unit framework in a tetrahedral shape, and such three-dimensional truss structured unit frameworks are interconnected thereby to form the three-dimensional truss structure.
Patent Document 2: Japanese Patent No. 4431805
Patent Document 3: Japanese Patent No. 4709982
The modularization to join members congruent in shape with each other thereby to form a unit module is an important factor in making a three-dimensional truss structure. Instead of using a strut module, an octet truss structure using a sheet module as shown in
A sheet module may be made of a thin aluminum sheet 39 having a flange 40 extended from an edge thereof as seen in
The flange 41 is extended upward and outward and the flange 42 is extended downward and outward.
As seen in
As described in Patent Document 4, there has been proposed a modularized framework unit and a framework member unit having a vector equilibrium body-shaped truss as a fundamental modular unit with the aim of securing a wide inner space.
Patent Document 4: Japanese Patent No. 4889020
Patent Document 4 describes that two units out of a plurality of vector equilibrium body-shaped truss units, each made of congruent framework members, are arranged so as to face each other at respective lateral sides thereof, where corresponding four points of base and vertex sides of the lateral sides facing each other are bridged so as to be connected by joint members B identical in length to framework members A, and pairing points of triangle pairs of the lateral sides facing each other are interconnected, and thereby, the two units are linked sideways.
According to Patent Document 4, a square pyramid truss is formed between the connected vector equilibrium body shaped trusses, and therefore, vector equilibrium body-shaped truss units, each of which is unstable individually, can be assembled together as a stable truss structure.
Further, to shape the vector equilibrium body shaped truss as fundamental modular unit by imaginarily truncating each vertex of a regular hexahedron can secure a comparatively wide regular hexahedral inner capacity.
Problems to be SolvedIn the module shown in
Further, as depicted in
To form the three-dimensional truss structure described above in Patent Document 4, the modularized framework units or framework member units are formed by combining the plurality of vector equilibrium body-shaped truss units so as to construct a truss, which requires two different members identical in length to each other, i.e., the framework member A and the joint member B to bridge for connection.
BRIEF SUMMARYThe purpose of the present invention is to fix the above-described difficulty in the conventional example and to provide a truss of framework modular units combined only with joint members of each unit module itself so that no other members are required. In the construction procedure, a complimentary square pyramid-like spatial region is formed internally thereby capable of providing more stability to the truss structure. Also, the modularized framework structure and the unit module for use in the modularized framework structure are capable of forming vertical frames such as walls with respect to horizontal frames such as roofs and floors in a right angle.
Means for Solving ProblemsIn order to achieve the above-described objectives, a first aspect of the present invention is a modularized framework structure of a three-dimensional truss structure obtained as a result of making unit modules as three-dimensional truss structured unit frameworks and interconnecting the unit modules characterized in that each of the unit modules is made of frames, having respective elongated joining surfaces thereof and connected mutually at end portions thereof, so as to imaginarily conform to a regular tetrahedron or a regular octahedron, wherein the elongated joining surfaces are obtained as a result of imaginarily planarly truncating surfaces of edges of the frames corresponding to ridgelines of the regular tetrahedron or the regular octahedron such that the elongated joining surfaces can be joined mutually between the unit modules, and such that the elongated joining surfaces of the unit module are oriented orthogonally to perpendiculars drawn imaginarily from the center of said unit module to the corner centers of the elongated joining surfaces of said unit module, respectively, so as to form a Tetra-module defined as a regular tetrahedral-like framework or an Octa-module defined as a regular octahedral-like framework, and wherein the unit modules as the Tetra-module or the Octa-module are interconnected by joining mutually the elongated joining surfaces of the frames between the unit modules thereby to form the three-dimensional truss structure.
A second aspect of the present invention is the modularized framework structure in the above-described first aspect, wherein the three-dimensional truss structure has both regular tetrahedral-like and octahedral-like framework domains so as to form an octet truss structure where either one of the domains is a complimentary spatial region.
A third aspect of the present invention is the modularized framework structure in the above-described first aspect, wherein the three-dimensional truss structure made of the Tetra-modules has a complementary square pyramid-like truss framework domain formed therein as a result of interconnecting the Tetra-modules by joining mutually the elongated joining surfaces of the frames between the Tetra-modules.
A fourth aspect of the present invention is the modularized framework structure in the above-described first aspect, wherein the three-dimensional truss structure made of the Octa-modules has a complementary square pyramid-like truss framework domain formed therein as a result of interconnecting the Octa-modules by joining mutually the elongated joining surfaces of the frames between the Octa-modules.
A fifth aspect of the present invention is the modularized framework structure in the above-described fourth aspect, wherein each of Octa-modules is formed as a result of interconnecting two Tetra-modules and adding thereto parallel frames each having a length of the Tetra-module's frame length multiplied by square root of 2, and a complementary tetrahedral framework domain is formed by frames each having a length of the Tetra-module's frame length multiplied by square root of 2 as a result of interconnecting the Octa-modules.
A sixth aspect of the present invention is the modularized framework structure in the above-described fifth aspect, wherein the unit modules are interconnected by fixing mutually the frames having respective elongated joining surfaces thereof between the unit modules.
A seventh aspect of the present invention is the modularized framework structure in the above-described first aspect, wherein the unit modules are interconnected by fixing mutually joint members between the unit modules
An eighth aspect of the present invention is the modularized framework structure in the above-described first aspect, wherein the unit modules are interconnected both by fixing mutually the frames having respective elongated joining surfaces thereof between the unit modules and by fixing mutually joint members between the unit modules.
A ninth aspect of the present invention is the modularized framework structure in any one of the above-described first to eighth aspects, wherein the unit modules are interconnected by lap-joining mutually cutouts having ridges and grooves formed on the elongated joining surfaces between the unit modules.
A tenth aspect of the present invention is the modularized framework structure in any one of the above-described first to ninth aspects, wherein the unit modules are interconnected by covering an assembling point of joints among the unit modules with a gusset plate so as to reinforce interconnection among the unit modules.
An eleventh aspect of the present invention is the modularized framework structure in the above-described tenth aspect, wherein the gusset plate is a disk plate.
A twelfth aspect of the present invention is the modularized framework structure in the above-described eleventh aspect, wherein the assembling point of joints among the unit modules at a perimeter portion thereof is covered with the disk plate bent to 90° so that the joints are connected with one another for reinforcement of interconnection among the unit modules.
For a unit module for use in a modularized framework structure obtained as a result of assembling a plurality of unit modules as a thirteenth aspect of the present invention, firstly, it is characterized in that the unit module is made of members, which correspond imaginarily to frames as ridgelines of a regular tetrahedron, identical in length to each other and having respective elongated joining surfaces thereof, and the members are connected at respective end portions thereof so as to form a Tetra-module as a regular tetrahedral-like framework, wherein the elongated joining surfaces are obtained as a result of imaginarily planarly truncating surfaces of edges of the members corresponding to ridgelines of the regular tetrahedron such that the elongated joining surfaces can be joined mutually between the unit modules, and such that the elongated joining surfaces of the unit module are oriented orthogonally to perpendiculars drawn imaginarily from the center of said unit module to the corner centers of the elongated joining surfaces of said unit module, respectively.
Secondly, a unit module for use in a modularized framework structure obtained as a result of assembling a plurality of unit modules as a fourteenth aspect of the present invention is characterized in that the unit module is made of members, which correspond imaginarily to frames as ridgelines of a regular octahedron, identical in length to each other and having respective elongated joining surface thereof, and the members are connected at respective end portions thereof so as to form an Octa-module as a regular octahedral-like framework, wherein the elongated joining surfaces are obtained as a result of imaginarily planarly truncating surfaces of edges of the members corresponding to ridgelines of the regular octahedron such that the elongated joining surfaces can be joined mutually between the unit modules, and such that the elongated joining surfaces of the unit module are oriented orthogonally to perpendiculars drawn imaginarily from the center of said unit module to the corner centers of the elongated joining surfaces of said unit module, respectively.
Thirdly, a unit module for use in a modularized framework structure obtained as a result of assembling a plurality of unit modules as a fifteenth aspect of the present invention is characterized in that the unit module is made of members, which correspond imaginarily to frames as ridgelines of a regular tetrahedron, identical in length to each other and having respective elongated joining surfaces thereof, and the members are connected at respective end portions thereof so as to form a Tetra-module as a regular tetrahedral-like framework, and an Octa-module as a regular octahedral-like framework is formed as a result of interconnecting two Tetra-modules and adding thereto parallel frames each having a length of the Tetra-module's frame length multiplied by square root of 2.
Fourthly, the unit module for use in the modularized framework structure as a sixteenth aspect of the present invention in any one of the above-described thirteenth to fifteenth aspects, wherein the frames having respective elongated joining surfaces thereof are connected with joint members at respective end portions thereof. Fifthly, the unit module for use in the modularized framework structure as a seventeenth aspect of the present invention in any one of the above-described thirteenth to sixteenth aspects, wherein each of the frames having respective elongated joining surfaces thereof is made of flat board material, hollow tube material, H-shaped steel material, angle material, or channel material.
Sixthly, the unit module for use in the modularized framework structure as a eighteenth aspect of the present invention in the above-described sixteenth or seventeenth aspect, wherein three joint pieces deployed to the frames having respective elongated joining surfaces thereof are developed in a plan view at an angle of 120° or 90° so as to be interconnected among one another with a top plate or a side plate thereof.
According to the first aspect of the present invention, it is possible to make unit modules usable in a block-like manner and to interconnect the unit modules thereby to construct a three-dimensional truss structure by joining the elongated joining surfaces of the members corresponding imaginarily to the ridgelines of a regular tetrahedron or an octahedron. In particular, the three-dimensional truss structure can therefore be constructed only by combining the unit modules without any other members as a joint member so that the assembly procedure can be simplified for a quicker operation, and the combination of only one type of unit modules can improve the prefabrication.
Further, overlapping of the frames corresponding to the ridgeline portions, respectively, of a regular tetrahedron or regular octahedron can enhance the truss in strength. As a diagonal member of the truss, such overlapping can contribute to the improved robustness of the truss structure.
Still further, each unit module can be applied to the construction of a multiple-layered truss not only horizontally but also vertically by joining mutually the frames having their respective elongated joining surfaces of the ridgeline portions.
Still further, one unit module can be simply interconnected to another unit module, thereby capable of forming a versatile and stable truss structure flexible in being adapted with ease to different spatial configurations post-assembly of the structured space.
Still further, the modular spaces created with unit modules offer optimization for constructing variously sized buildings, such as a small-scale assembly structure like vinyl houses, lodges, and shelters toward a large-scale structure such as buildings, depending upon the required number of unit module spaces.
Still further, because the structure can be constructed solely by combining unit modules, the fabrication and management of members are simplified. During assembly, interconnecting modules congruent in shape with each other in the same pattern can lead to increase in efficiency and cost reduction.
Still further, when combining Tetra-modules for the creation of the three-dimensional truss structure for floors and walls in a horizontal or vertical arrangement, the integration of the floor and wall is realized through the connection between the frames in a perpendicular alignment thereby to allow the three-dimensional truss structure for floors and walls to be constructed at right angles. This allows the walls to be formed so as to ascend (or descend) perpendicularly to the floor.
According to the second aspect of the present invention, the modularized framework structure has an octet truss structure having both a regular tetrahedral-like framework domain and a regular octahedral-like framework domain. Since either one of the regular tetrahedral-like framework domain or the regular octahedral-like framework domain serves as a complementary spatial region to the other, it is possible to create a stable truss structure only by using Tetra-modules.
According to the third aspect of the present invention, when two Tetra-modules, each of which is a regular tetrahedral-like framework, are interconnected by joining the frames having their respective elongated joining surfaces, the joined frames become the adjacent diagonal beams while the other frames having their respective elongated joining surfaces directed outwardly in a horizontal or vertical direction perpendicular to each other. When further combined, a complementary square pyramid-like truss framework domain is formed within the three-dimensional truss structure.
When Tetra-modules are used as the unit modules, if the Tetra-modules are arranged front to back and left to right, a complementary square pyramid-like truss framework domain is formed between lateral sides of the unit modules. Alternatively, an octet truss structure having a complementary square pyramid-like truss framework domain combined therewith is formed. In either case, it allows a stable truss structure to be assembled only by using Tetra-modules.
According to the fourth aspect of the present invention, when Octa-module are used as the unit modules, if the Octa-modules are arranged, a complementary regular tetrahedral-like framework domain, that is a tetra truss space, is formed between lateral sides of the unit modules. This allows a stable truss structure to be assembled only by using Octa-modules.
According to the fifth and fifteenth aspects of the present invention, it is possible to form a complimentary tetrahedral-like framework domain, having a length of the Tetra-module's frame length multiplied by square root of 2, by interconnecting Octa-modules each formed as a result of interconnecting two Tetra-modules with parallel frames each having a length of the Tetra-module's frame length multiplied by square root of 2.
According to the sixth to eighth aspects of the present invention, the unit modules can be interconnected selectively by: mutually fixing the frames having elongated joining surfaces; mutually fixing joint members; or both. In either manner, the elongated joining surfaces of the members as the frames corresponding to ridgeline portions of a regular tetrahedron or a regular octahedron can be joined mutually so that the connection between such members is robust.
According to the ninth aspect of the present invention, cutouts having ridges and grooves for lap joints are formed on the elongated joining surfaces, and the cutouts are lap-joined through the engagement therebetween, which allows the elongated joining surfaces to be joined robustly, thereby to interconnect the unit modules strongly.
According to the tenth to twelfth aspects of the present invention, the interconnection between the unit modules can be reinforced by the gusset plate. Further, a disk plate is used as the gusset plate, and therefore, the interconnection among four unit modules can be reinforced by a single gusset plate. Still further, the assembling point of the joints among the unit modules at a perimeter portion is covered with the disk plate bent to 90°, and therefore, the interconnection among the unit modules can be further reinforced.
According to the thirteenth aspect of the present invention, the Tetra-module as a regular tetrahedral-like framework can be formed simply by assembling members having the same length, and therefore, is allowed to be created inexpensively with the minimal number of members.
According to the fourteenth aspect of the present invention, the Octa-module as a regular octahedral-like framework, can be formed simply by assembling members having the same length, and therefore, is allowed to be created inexpensively with the minimal number of members.
According to the fifteenth aspect as well as the sixteenth aspect of the present invention, the unit module formed by the frames having the elongated joining surfaces corresponding to the edges of a regular tetrahedron or a regular octahedron can have end portions of the frames joined mutually with the joint member. This can eliminate the need for troublesome tasks such as welding the end portions of the frames thereby capable of ensuring sufficient structural strength through the joint members.
According to the seventeenth aspect of the present invention, the frames having the elongated joining surfaces with various cross-sectional shapes corresponding to flat board material, hollow tube material, H-shaped steel material, angle material, or channel material can be used.
According to the eighteenth aspect of the present invention, there is described an example of a joint member. As a result of forming joint pieces to be attached to the elongated joining surfaces of the frames, the frames can easily be assembled through such joint pieces.
Advantageous Effects achieved by the InventionAs described above, according to the modularized framework structure and the unit module for use in the modularized framework structure of the present invention, the truss structure can be formed only by combining the unit modules without the necessity of any additional members as a joint member. Further, according to the present invention, there can be assembled a stable truss structure accompanied with the internally structured complementary spatial regions, and the vertical frameworks such as walls can be created to be perpendicular to the horizontal frames such as roofs or floors through the use of the truss structure.
The following describes in detail an embodiment of the present invention with reference to the drawings.
Firstly, there will be described a Tetra-module 1. The Tetra-module 1 is in a regular tetrahedral shape. As shown in
An elongated joining surface 2 of a frame 3 is a surface obtained by planar truncation of the edge C (ridgeline) of a regular tetrahedron. The angle formed by this plane is to have no inclination in the width direction of the elongated joining surface 2, with respect to the center D of the regular tetrahedron. The width dimension of elongated joining surface 2 depends upon the extent of the above-described planar truncating, but is not necessarily limited thereto. More specifically, the orientation of the elongated joining surface 2 of the frame 3 is determined so as to be orthogonal to the perpendicular line connecting the center of the Tetra-module 1 to the corner center of the elongated joining surface 2.
As shown in
The frames 3 having their respective elongated joining surfaces 2 serve as axial members of the regular tetrahedral-like framework, and six frames 3 in total are assembled together through the use of the joint members 4. The suffix term “-like” in the context of the tetrahedral-like framework refers to the fact that the Tetra-module 1 has further six elongated joining surfaces 2, and four plane surfaces 7 in equilateral triangle shapes as ceilings of the joint members 4 at four vertex portions. In total, the Tera-module 1 has 14 surfaces; nevertheless, it has substantially a shape of regular tetrahedron.
The frames 3 having their respective elongated joining surfaces 2 are shown as being rectangular elongated flat plates made of band-shaped angle materials. In so far as being assembled into a regular tetrahedral-like framework, however, if the surface facing outward is the elongated joining surface 2, a cross-section of the axial member may take various shapes such as cylindrical, triangular, or other polygonal shapes, or even hollow pipe-like cross-sectional shapes. The specific shape is not critical as long as it facilitates the formation of a regular tetrahedral-like framework.
In such a manner, the frames 3 having their respective elongated joining surfaces 2 may have various cross-sectional shapes. One can choose from options such as flat board material, hollow tube material, H-shapes steel material, angle material, or channel material.
Further, the material used for the frame 3 having their respective elongated joining surfaces 2 may be chosen from various options depending upon the intended use of the completed three-dimensional truss structure. The options include metals such as steel, aluminum, and others as well as wood, synthetic resin, and more. In a case of involving marine structures, corrosion resistant materials such as titanium may be used.
Similarly, the material used for joint members 4 may be chosen from various options depending upon the intended use. The options include metals such as steel, aluminum, and others as well as wood, synthetic resins, and more.
The joint member 4 for assembling the frames 3 having their respective elongated joining surfaces 2 may be in any arbitrary shape as long as the shape allows the frames 3 having their respective elongated joining surfaces 2 to be assembled into a regular tetrahedral-like framework. It is preferable, however, that the joint pieces 5 for the frames 3 having their respective elongated joining surfaces 2 are arranged in a plan view with respect to a mutual opening of 120°, and the joint pieces 5 are connected to each other by a top plate or side plates 6. The shown example has the side plates 6 connected to each other; however, such side plates 6 are optional.
It is to be noted that, in order to avoid any interference with the interconnection among the Tetra-modules 1 as the unit modules, an end surface of the elongated flat plate 2 should not overlap with a ceiling portion 7 of the joint member 4. The ceiling portion 7 of the joint member 4 should have an opening surface in a regular triangle shape or, as shown, should be the top plate substantially in a regular triangular-like (hexagonal-like) shape in a plan view. The end portions of the joint pieces 5 or the side plates 6 are continuously connected to each edge of the ceiling portion 7. The enlarged view of the joint member 4 is depicted in
Although not shown, if the ceiling portion 7 of the joint member 4 is made of the top plate (top board material), such a ceiling portion 7 may be perforated with a through-hole for bolt connection at the central position thereof.
Further, as shown in
With regard to the connection between the joint member 4 and the frame 3 having the elongated joining surface 2, they can be fixed together by: overlapping the joint piece 5 of the joint member 4 and a joining point of the rectangular elongated flat plate 2, or forming slits in the frame 3 having the elongated joining surface 2 so as to insert the joint piece 5 into the slits thereby to be clamped between the slits of the frame 3; and fixing between the joint piece 5 and the frame 3 through bolting, nutting, welding, or other means.
It is to be noted that, when joining the joint member 4 outside the frame 3 having the elongated joining surface 2, if the joint piece 5 of the joint member 4 is aligned flush with the elongated joining surface 2 so as not to protrude, the presence of the joint member 4 will not interfere with the mutually overlapping joint of the frames 3 having their respective elongated joining surfaces 2.
Secondary, there will be described the formation of the three-dimensional truss structure by the Tetra-modules 1. The Tetra-modules 1 are assembled as a result of interconnecting thereof so as to form the three-dimensional truss structure. The Tetra-modules 1 having their respective elongated joining surfaces are used as unit modules interconnected to one another by aligning and joining the elongated joining surfaces of the frame 3, as shown in
It is to be noted that there are two manners of interconnecting and fixing the Tetra-modules 1. One is to fix the frames 3 having their respective elongated joining surfaces 2, and the other is to connect the joint member 4 without any fixing of the frames 3 having their respective elongated joining surfaces 2. Also, there is an option to employ both manners simultaneously.
Further, to fix the mutually overlapped frames 3 with the elongated joining surfaces 2, there are various possible fixing manners such as bolt and nut tightening, welding, interlocking, and tightening with bands.
Still further, to enhance the solidity of overlapping the frames 3 to each other, as shown in
An example of joining through the use of such embossed ridges and grooves 8 include not only the case depicted in
The three-dimensional truss structure assembled by interconnecting the Tetra-modules 1 allows various forms such as disc-shaped or cube-shaped configurations. As shown in
The three-dimensional truss structure assembled with the Tetra-modules 1 result in the formation of a complementary pyramid-like truss framework domain B within the three-dimensional truss structure. This is achieved through interconnecting the frames 3 having their respective elongated joining surfaces 2.
When four Tetra-modules 1 are brought together such that their vertices meet at a single point, as shown in
To further explain the complementary pyramid-like truss framework domain B, when two Tetra-modules 1, each corresponding to a regular tetrahedral-like framework, are joined along the adjacent two elongated joining surfaces 2 of the frames 3 so as to form the edge portion corresponding to a ridgeline portion of the regular tetrahedral-like framework, the frame 3 obtained as overlapping the adjacent two elongated joining surfaces 2 serves as a diagonal member. On the other hand, the other frames 3 having their respective elongated joining surfaces 2 directed outward are aligned horizontally and perpendicularly to each other. When the frames 3 are combined together, the square frame A as the base surface of the complementary pyramid-like truss framework domain B is formed.
It is to be noted that the complementary pyramid-like truss framework domain B is identical in volume to the combined two Tetra-modules 1.
When Tetra-modules 1 are arranged in a front-and-back direction and a left-and-right direction as described above, the complementary pyramid-like truss framework domain B is allowed to be formed between the lateral sides of the adjacently-arranged unit modules. Such arrangement therefore enables the assembly of a stable truss structure only by using the Tetra-modules 1.
Further, when assembling the Tetra-modules 1, the frames 3 corresponding to ridgeline portions of regular tetrahedrons are overlapped with each other, which results in a doubly-overlapped layer capable of enhancing the strength. If such overlapped portions correspond to the diagonal members, the diagonal members of the three-dimensional truss structure can become robust.
Still further, as shown in
Another regular tetrahedral-like truss (shown in white color in
The right side of
It is to be noted that the Tetra-modules 1 are allowed to be combined in a flexible manner. In
As shown in
In the shown examples, a gusset plate 9′ is a circular disk plate configured to reinforce the interconnection among the unit modules by joining mutually the joint members.
Further, through the use of the gusset plate 9′ made of a disk plate, such a single gusset plate can reinforce the interconnection among four unit modules.
Still further, as shown in
In this case, another regular tetrahedral-like truss structure (shown in white color) and the above-described regular tetrahedral-like truss structure identical in size of edge to each other intersect at their respective midpoints thereby to form a pair of tetrahedral-like truss framework structure. The four vertices positioned outside the pair of tetrahedral-like trusses constitute eight vertices of a cubic-like truss structure. Ultimately, such a cubic-like truss structure consists of 64 Tetra-modules.
In
When building structures like floor (X), wall (Y), or roof (Z) using the modularized framework structure according to the present invention, the quadrilateral base surface of the pyramid-like truss framework domain B are aligned horizontally or vertically so as to form the constructed surface.
In
The strength and deformation characteristics of such constructed three-dimensional truss structure is explained by the effectiveness of the square pyramid-like truss framework domain B formed as a result of assembling the Tetra-modules.
Three-dimensional truss structures are commonly used in roofing and similar applications due to their lightweight nature and ability to span large distances. Considerations to be made include the dominance of vertical loads such as snow and wind loads. Strength design is typically the focus of the designing. However, when applying the structures to support exceptionally large vertical loads over extended periods, as in structures forming large planar spans, earthquake effects must also be taken into account. In such cases, the structural integrity and deformation capacity of the three-dimensional truss against horizontal loads become essential considerations.
Looking at the three-dimensional truss shown in
Therefore, even if individual truss members making up the three-dimensional truss structure buckle, stress redistribution is expected, providing resilience against earthquake forces. Additionally, compared to other structural components of three-dimensional trusses, the truss structure comprising complementary square pyramid truss structure domains formed by tetra-modules can achieve economic efficiency through prefabrication with minimal member and node counts.
In the above-described embodiment, the Tetra-modules 1 are assembled into a tetrahedral-like framework by connecting the end portions of frames 3, each having the elongated joining surface 2, with joint members 4. However, it is also possible to simplify by directly connecting the end portions of frames 3 into an integrated structure without using the joint members 4.
Next, there will be described a second embodiment of the present invention, where the unit module as the three-dimensional truss structured unit framework is an Octa-module 10 as a regular octahedral-like framework. As shown in
In the case of the Octa-module 10 according to the present invention, identical to the Tetra-module 1, precisely, assuming a regular octahedron, the edge frame portion of the octahedron is formed utilizing frames 3 having elongated joining surfaces 2, and by connecting the end portions of the frames 3 having elongated joining surfaces 2 with joint member 4 in an octahedral-like framework is assembled.
All frames 3 are in equal length. The Octa-module is formed by two tetrahedral frames sharing a square frame in common, arranged vertically. Three sets of square frames mutually intersect to form eight triangular lattices.
Joint members 4 are configured as follows. The connecting pieces for frames having elongated joining surfaces are unfolded in a plan view at a 90-degree angle to each other. The connecting pieces are then connected to each other by the top plate or side plates.
Frames 3 featuring elongated joining surfaces 2 serve as the axial elements of the octahedral structure. They are assembled with a total of twelve joint members 4. The term “octahedral-like structure” refers to the fact that it has twelve elongated joining surfaces 2, six of which form square planes at the vertices. And there are eight triangular truss surfaces forming the lateral surfaces, resulting in a total of 26 surfaces.
Joint member 4 can take any shape as long as a regular octahedral structure can be assembled utilizing the frames 3 featuring the elongated joining surfaces 2. However, in practice, the four connecting pieces 5 for attaching to frames 3 with elongated joining surfaces 2 are unfolded in a plan view, at 90-degree angle to each other. These connecting pieces 5 may be connected to each other by the top plate or side plates.
The frames 3 with elongated joining surfaces 2, as shown, are typically rectangular narrow flat plates made of strip-like angle bars. However, when assembled into an octahedral structure, if the outward facing surfaces are the elongated joining surfaces 2, the cross-section of the axial elements may vary. It could be an inverted wedge shape, triangular, or other polygonal shape, or even a hollow tubular shape, and the specific shape is not critical as long as it serves as a structural member for the octahedral structure.
In the case of the aforementioned Tetra-module 1, identical to the Tetra-module 1, the frame 3 featuring the elongated joining surface 2 can be selected from flat plates, hollow section bars, H-shaped and other types of steel materials, angle materials, and channel materials.
The material for the frame 3 with the elongated joining surface 2 can be chosen based on the intended use of the finished three-dimensional truss structure. Options include metals like steel and aluminum, wood, synthetic resins, and others. For marine structures, corrosion-resistant materials like titanium can also be used.
The elongated joining surface 2 of frame 3 is a shape obtained by planer truncating one of the edges C of a regular octahedron. The angle formed by this surface is such that it remains perpendicular to the center of the regular octahedron in the width direction of the elongated joining surface 2. The width of the elongated joining surface 2 is not specifically limited and can vary depending on the extent of the truncation (it is not depicted). In other words, the position of the elongated joining surface 2 of frame 3 is determined so that they are orthogonal to the perpendicular line drawn by connecting the center of the Tetra-module 1 and the corner center of the elongated joining surfaces.
The connection between joint members 4 connecting piece 5 and rectangular elongated plate 2 can be achieved through overlapping or inserting. Fixation methods include bolting with nuts, welding and others. Whether the joint members 4 connecting piece 5 connects inside or outside, frame 3 with the elongated joining surface 2, or through insertion, it follows the same principles as Tetra-module 1.
Here is the explanation of forming a three-dimensional truss structure using Octa-module 10. The Octa-module 10 interconnected to form a three-dimensional truss structure. Identical to aforementioned Tetra-module 1, this joining involve frames 3s with elongated joining surfaces 2, which are overlapped and connected to each other.
Furthermore, when joining the Octa-module 10, there are cases where the frame 3 with elongated joining surfaces 2 are directly fixed to each other, and cases where the frame 3 with elongated joining surfaces 2 are not fixed to each other but are interconnected through with joint members 4. There are also scenarios where both connecting methods are applied.
Additionally, frames 3 with elongated joining surfaces 2 can be securely fastened when overlapped by connecting methods such as bolting with nuts, welding, interlocking with cutouts creating ridges and grooves, crimping with bands, and more. Moreover, creating ridges and grooves on the elongated joining surfaces 2 is allowed for a lap joint method with its interlocking nature.
As previously described, the Octa-module 10, which houses two square pyramid trusses internally with a common quadrilateral base, forms a complementary tetrahedral framework structural domain D within the three-dimensional truss structure when assembled with three-fold rotational symmetry as depicted in
In
As previously described, the strength and deformation shape of the internal complementary tetrahedral framework structural domain formed solely with the Octa-modules align with the explanation provided.
In the third embodiment of this previous invention, as seen in
As seen in
While not illustrated here, the Octa-module 10 as well, may be constructed as an integrated Tetra-module without using joint member, identical to the integrated Tetra-module 1 shown in
-
- 1 Tetra-module
- 2 elongated joining surface
- 3, 3a frame
- 4 joint member
- 5 joint piece
- 6 side plate
- 7 top plate
- 8 ridges and grooves, cutouts
- 9, 9′ gusset plate
- 10 Octa-module
- 11 angle material
- 13 H-shaped steel material
- 14 channel material
- 40, 41, 42 flange
- B pyramid-like truss framework domain
- C regular octahedral-like framework domain
- D regular tetrahedral framework domain
- X floor
- Y wall
- Z roof
- a, b, c, d, a part of a square frame
The various embodiments described above can be combined to provide further embodiments. All of the U.S. patents, U.S. patent application publications, U.S. patent applications, foreign patents, foreign patent applications and non-patent publications referred to in this specification and/or listed in the Application Data Sheet are incorporated herein by reference, in their entirety. Aspects of the embodiments can be modified, if necessary to employ concepts of the various patents, applications and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.
Claims
1. A modularized framework structure of a three-dimensional truss structure obtained as a result of making unit modules as three-dimensional truss structured unit frameworks and interconnecting the unit modules, comprising;
- each of the unit modules is made of frames, having respective elongated joining surfaces thereof and connected mutually at end portions thereof, so as to imaginarily conform to a regular tetrahedron or a regular octahedron, wherein the elongated joining surfaces are obtained as a result of imaginarily planarly truncating surfaces of edges of the frames corresponding to ridgelines of the regular tetrahedron or the regular octahedron such that the elongated joining surfaces can be joined mutually between the unit modules, and such that the elongated joining surfaces of the unit module are oriented orthogonally to perpendiculars drawn imaginarily from the center of the unit module to the corner centers of the elongated joining surfaces of the unit module, respectively, so as to form a Tetra-module defined as a regular tetrahedral-like framework or an Octa-module defined as a regular octahedral-like framework, and wherein the unit modules as the Tetra-module or the Octa-module are interconnected by joining mutually the elongated joining surfaces of the frames between the unit modules thereby to form the three-dimensional truss structure.
2. The modularized framework structure according to claim 1, wherein the three-dimensional truss structure has both regular tetrahedral-like and octahedral-like framework domains so as to form an octet truss structure where either one of the domains is a complimentary spatial region.
3. The modularized framework structure according to claim 1, wherein the three-dimensional truss structure made of the Tetra-modules has a complementary square pyramid-like truss framework domain formed therein as a result of interconnecting the Tetra-modules by joining mutually the elongated joining surfaces of the frames between the Tetra-modules.
4. The modularized framework structure according to claim 1, wherein the three-dimensional truss structure made of the Octa-modules has a complementary square pyramid-like truss framework domain formed therein as a result of interconnecting the Octa-modules by joining mutually the elongated joining surfaces of the frames between the Octa-modules.
5. The modularized framework structure according to claim 4, wherein each of Octa-modules is formed as a result of interconnecting two Tetra-modules and adding thereto parallel frames each having a length of the Tetra-module's frame length multiplied by square root of 2, and a complementary tetrahedral framework domain is formed by frames each having a length of the Tetra-module's frame length multiplied by square root of 2 as a result of interconnecting the Octa-modules.
6. The modularized framework structure according to claim 1, wherein the unit modules are interconnected by fixing mutually the frames having respective elongated joining surfaces thereof between the unit modules.
7. The modularized framework structure according to claim 1, wherein the unit modules are interconnected by fixing mutually joint members between the unit modules.
8. The modularized framework structure according to claim 1, wherein the unit modules are interconnected both by fixing mutually the frames having respective elongated joining surfaces thereof between the unit modules and by fixing mutually joint members between the unit modules.
9. The modularized framework structure according to claim 1, wherein the unit modules are interconnected by lap-joining mutually cutouts having ridges and grooves formed on the elongated joining surfaces between the unit modules.
10. The modularized framework structure according to claim 1, wherein the unit modules are interconnected by covering an assembling point of joints among the unit modules with a gusset plate so as to reinforce interconnection among the unit modules.
11. The modularized framework structure according to claim 10, wherein the gusset plate is a disk plate.
12. The modularized framework structure according to claim 11, wherein the assembling point of joints among the unit modules at a perimeter portion thereof is covered with the disk plate bent to 90° so that the joints are connected with one another for reinforcement of interconnection among the unit modules.
13. A unit module for use in a modularized framework structure obtained as a result of assembling a plurality of unit modules, comprising:
- the unit module is made of members, which correspond imaginarily to frames as ridgelines of a regular tetrahedron, identical in length to each other and having respective elongated joining surfaces thereof, and
- the members are connected at respective end portions thereof so as to form a Tetra-module as a regular tetrahedral-like framework, wherein
- the elongated joining surfaces are obtained as a result of imaginarily planarly truncating surfaces of edges of the members corresponding to ridgelines of the regular tetrahedron such that the elongated joining surfaces can be joined mutually between the unit modules, and such that the elongated joining surfaces of the unit module are oriented orthogonally to perpendiculars drawn imaginarily from the center of the unit module to the corner centers of the elongated joining surfaces of the unit module, respectively.
14. A unit module for use in a modularized framework structure obtained as a result of assembling a plurality of unit modules, comprising:
- the unit module is made of members, which correspond imaginarily to frames as ridgelines of a regular octahedron, identical in length to each other and having respective elongated joining surface thereof, and
- the members are connected at respective end portions thereof so as to form an Octa-module as a regular octahedral-like framework, wherein
- the elongated joining surfaces are obtained as a result of imaginarily planarly truncating surfaces of edges of the members corresponding to ridgelines of the regular octahedron such that the elongated joining surfaces can be joined mutually between the unit modules, and such that the elongated joining surfaces of the unit module are oriented orthogonally to perpendiculars drawn imaginarily from the center of the unit module to the corner centers of the elongated joining surfaces of the unit module, respectively.
15. A unit module for use in a modularized framework structure obtained as a result of assembling a plurality of unit modules, comprising:
- the unit module is made of members, which correspond imaginarily to frames as ridgelines of a regular tetrahedron, identical in length to each other and having respective elongated joining surfaces thereof, and the members are connected at respective end portions thereof so as to form a Tetra-module as a regular tetrahedral-like framework, and
- an Octa-module as a regular octahedral-like framework is formed as a result of interconnecting two Tetra-modules and adding thereto parallel frames each having a length of the Tetra-module's frame length multiplied by square root of 2.
16. The unit module for use in the modularized framework structure according to claim 15, wherein
- the frames having respective elongated joining surfaces thereof are connected with joint members at respective end portions thereof.
17. The unit module for use in the modularized framework structure according to claim 16, wherein
- each of the frames having respective elongated joining surfaces thereof is made of flat board material, hollow tube material, H-shaped steel material, angle material, or channel material.
18. The unit module for use in the modularized framework structure according to claim 17, wherein
- three joint pieces deployed to the frames having respective elongated joining surfaces thereof are developed in a plan view at an angle of 120° or 90° so as to be interconnected among one another with a top plate or a side plate thereof.
Type: Application
Filed: May 17, 2024
Publication Date: Sep 12, 2024
Inventor: Yasushi KAJIKAWA (Nagano)
Application Number: 18/667,656