Antivibration uniform-strength connector
An antivibration uniform-strength connector including two mating connection plates and a bolt. The connection plates are made of steel material having tensile strength proximate to that of steel reinforcements. The connection plates are made in accordance with the specifications of the steel reinforcements. Each connection plate has a central hole and two lateral extension sections. Each extension section has an opposite contact face. Contact recesses are formed on the contact faces and spaced from the central hole by equal or unequal distances. With steel reinforcements respectively held in the contact recesses, the bolt is tightened in the central hole of one connection plate to fasten the connection plates and fix the steel reinforcements in a double-cross or parallel pattern. The antivibration uniform-strength connector is applicable to the major steel reinforcements of a beam, a column, a bridge, a bridgeboard, etc. to truly strongly fixedly combine the steel reinforcements into a reinforcement network or reinforcement cage. Accordingly, the reinforcement network or reinforcement cage can bear much greater stress, especially the dynamic cyclic shear strength. Therefore, the antivibration strength of a building can be highly enhanced.
The present invention is related to a construction technique, and more particularly to an antivibration uniform-strength connector developed on principles of earthquake engineering. The antivibration uniform-strength connector combines vertical force and horizontal force and enables RC buildings to bear dynamic cyclic shear strength.
It is well known in construction field that the compression strength of steel reinforcements is ten-time higher than that of concrete. Moreover, the tensile strength of steel reinforcements is even one hundred-time higher than that of concrete. Therefore, the concrete is used in combination with the steel reinforcements to achieve higher strength and economic effect. However, up to now, the cross connection between the steel reinforcements is still accomplished by way of “tying of fine iron wires” and “welding”. According to these two measures, both the tensile strength and shear strength of the connected points are less than 3000 pounds/each point. This value is much lower than the solidification strength of the concrete, that is, about 5000 pounds/inch. The above connected points are reinforced by outer loops, inner supports, reverse arcs, etc. However, the connected points are still hard to truly securely fasten and must rely on the solidification of the concrete. It was seen in many earthquake disasters that some buildings collapsed and the concrete is crashed with the steel reinforcements scattering around. This proves that the longitudinal/latitudinal connected points must be reinforced to ensure safety.
SUMMARY OF THE INVENTIONIt is therefore a primary object of the present invention to provide an antivibration uniform-strength connector which is able to highly enhance the antivibration strength of a building. Therefore, even if the building tilts down, the building will not collapse and crash so that the safety of properties and lives can be ensured. The antivibration uniform-strength connector includes two mating connection plates and a bolt. The connection plates are made of steel material having tensile strength proximate to that of steel reinforcements. Each connection plate has a central hole and two lateral extension sections. Each extension section has an opposite contact face. Contact recesses are formed on the contact faces. With steel reinforcements respectively held in the contact recesses, the bolt is tightened in the central hole of one connection plate to fasten the connection plates and fix the steel reinforcements in a double-cross or parallel pattern.
It is a further object of the present invention to provide the above antivibration uniform-strength connector which serves to longitudinally and altitudinally fixedly connect multiple steel reinforcements to form a reinforcement network or reinforcement cage by a strength equal to or higher than the strength of the reinforcements. Therefore, the reinforcement network or reinforcement cage as a whole has uniform strength to “integrally resiliently” reinforce the concrete. Accordingly, the reinforcement network or reinforcement cage can bear much greater stress, especially the dynamic cyclic shear strength. Therefore, the antivibration strength of a building can be highly enhanced.
The present invention can be best understood through the following description and accompanying drawings wherein:
Please refer to
In use, referring to
The tensile strength of the antivibration uniform-strength connector of the present invention is compared with the tensile strength of the standard steel reinforcement specification of ASTM as Table 1 below:
As the Table 1 above, ASTM No. 8 steel reinforcement has a diameter of one inch and a cross-sectional area of 0.79 square inch. Converted into metric system, the tensile strength is 510 mm2×80 kg=41 metric tons. The cross-sectional area of the forced point of the antivibration uniform-strength connector is preferably 530 mm2, that is, the tensile strength is 43 metric tons. The 27M2×10 standard bolt has a tensile strength of 48 metric tons and is used to fasten No. 8 steel reinforcements. Accordingly, multiple steel reinforcements longitudinally and altitudinally intersect each other to achieve multipoint connection and form a steel reinforcement network. In general, each face of the beam or column of an RC building employs at least 5 No. 8 steel reinforcements. Accordingly, six antivibration uniform-strength connectors are applied to each face as shown in
The antivibration uniform-strength connector of the present invention is characterized in that the steel reinforcements can be truly fastened by the antivibration uniform-strength connectors to form a strong resilient reinforcement cage body for bearing dynamic cyclic shear strength in cooperation with the concrete. Therefore, the antivibration strength as a whole is enhanced to avoid crash of the concrete. Accordingly, even if the building tilts down, the building will not collapse and crash so that the safety of properties and lives can be ensured. The antivibration uniform-strength connector is also applicable to bridgeboards, bridges, etc. which are subject to frequent vibrations.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
Claims
1. An antivibration uniform-strength connector applicable to reinforced concrete, comprising two mating connection plates and a bolt, each connection plate being formed with a central hole and two extension sections laterally extending from the central hole, each extension section having an opposite contact face, contact recesses being formed on the contact faces and spaced from the central hole by certain distances, steel reinforcements being respectively held in the contact recesses of the connection plates and the bolt being tightened in the central hole of one connection plate to fasten the connection plates and fix the steel reinforcements between the connection plates in a double-cross pattern or a parallel pattern.
2. The antivibration uniform-strength connector as claimed in claim 1, wherein the contact face of each extension section of each connection plate is formed with multiple continuous contact recesses.
3. The antivibration uniform-strength connector as claimed in claim 1, wherein the contact recesses of the connection plate are spaced from the central hole by equal distances.
4. The antivibration uniform-strength connector as claimed in claim 2, wherein the contact recesses of the connection plate are spaced from the central hole by equal distances.
5. The antivibration uniform-strength connector as claimed in claim 1, wherein the contact recesses of the connection plate are spaced from the central hole by unequal distances.
6. The antivibration uniform-strength connector as claimed in claim 2, wherein the contact recesses of the connection plate are spaced from the central hole by unequal distances.
Type: Application
Filed: Dec 21, 2007
Publication Date: Jun 26, 2008
Inventor: Kuo-Chung Chen (Taipei county)
Application Number: 12/003,238
International Classification: E04C 5/16 (20060101);