Abstract: The invention concerns a suspension bridge comprising an essentially flat main structure, the upper surface of which forms the roadway for the transport means crossing the bridge, and a suspension structure formed of a plurality of catenary wires connected to end piers of the bridge and of a plurality of vertical stays for suspending the main flat bridge structure to the catenary wires. According to the invention, to the bridge structure there are associated wing control surfaces having an aerodynamic lifting and/or negative lifting action, the flutter speed proper to said wing control surfaces being considerably higher than the flutter speed proper to the bridge structure, and furthermore, the bridge structure and the wing control surfaces are stiffly interconnected and interact dynamically in order to shift the flutter speed of the whole at least above the top speed of the wind expected in the bridge area.

Abstract: A streamlined box girder type suspension bridge comprises a plurality of towers for supporting the cables, and the center main span and side spans comprising streamlined box girders suspended by a plurality of hangers from the cables. An additional mass of an appropriate weight comprising the material which would not directly contribute to the strength of the box girder is formed as a core at the predetermined portion of the box girder in order to suppress the bending-torsional flutter arising from the streamlined shape of the box girder, and the core extends over the complete span of the bridge symmetrically and with respect to the longitudinal axis thereof.

Abstract: A cable stayed bridge is constructed as having approach deck spans and at least one cable stayed deck bridge section assembled as a unit by employing the deck surfaces of the approach spans as in situ work surfaces for erecting equal deck lengths of the unit. A bridge pylon is supported on a floatable support and extends through an open gap provided in an approach span deck, and cable stays are extended from the pylon for supporting the deck lengths. The completed unit is moved away from the work surfaces and into alignment with a last of the approach spans, and is permanently anchored in place.

Abstract: A bridge has prefabricated sections and is prestressed externally of the concrete of the sections by cables. Each section has upper and lower decks, interbraced by longitudinal oblique webs which form dihedrons. Certain dihedrons are closed by transverse panels. The panels assure the desired deviations of the prestressing cables as well as their anchoring.

Abstract: An anchoring rod extends vertically through a hollow box girder underlying a suspension bridge or suspended walkway. The anchoring rod is connected at its upper end to a suspension cable and is provided at its lower end with a stop member which can be tightened against the lower wall of the girder. The opening in the lower wall of the girder through which the anchoring rod extends is larger than the opening in the upper wall of the girder, and a tubular, load-bearing sleeve is carried on the anchoring rod through the lower wall opening. The tubular sleeve is sized so that the upper end abuts against the inner surface of the upper wall of the girder and the lower end abuts against the stop member when the stop member is tightened against the lower wall of the girder.

Abstract: A bridge structure comprising at least one pair of upstanding spaced apart rigid mast-towers and a rigid boom-like member extending upwardly and angularly respective each mast-tower. At least a tie member joining the free end of each boom-like member with the free end of its adjacent mast-tower, the tie member having a substantially fixed length and serving to support the boom-like member off the mast-tower. An elongated deck extending beneath the boom-like members and supported from above by a plurality of tie members, the tie members depending downwardly from each boom-like member free end, to define a pair of fan-like configurations. In a further embodiment of the invention, a pair of such structures are utilized, such being arranged in face-to-face relation. In a still further embodiment, a third deck structure is interposed intermediate the two face-to-face structures. In a still further embodiment, the two structures less the decks and their supporting tie members, are utilized as a cable support.

Abstract: A stiffening girder for a stayed cable bridge, constructed of reinforced concrete or prestressed concrete, is formed by a closed multi-cell box extending in the long direction of the bridge. The upper part of the box is a substantially horizontally extending roadway slab. Webs extending downwardly from the roadway slab and in the long direction of the bridge combine with the roadway slab to form at least a part of the multi-cell box. The webs can be vertically arranged or obliquely inclined relative to the roadway slab. Further, a bottom slab spaced downwardly from the roadway slab may complete the box. The girder or box is supported by inclined cables extending in at least one support plane along the long direction of the bridge. The cables can be attached to the girder along its center line in the long direction or at symmetrical locations positioned outwardly from the center line.

Abstract: A tension-band bridge having one or more main openings (2) and possibly subsidiary openings (3), comprises a tension band (4) gripped between abutments (5) and possibly taken over supporting pillars (6). The traffic route over the bridge is disposed on a saddling (7), which bends in the longitudinal direction of the bridge, in the region of the main openings (2), while the tension band (4) can be travelled over directly in the region of any subsidiary openings (3) which may be present. The saddling which bends in the longitudinal direction of the bridge preferably consists of a latticework construction (10, 11, 12) which is rigid in the transverse direction of the tension band (4) and which is connected, in the longitudinal direction of the bridge, by means of diagonal struts (13) in each of which shock absorbers (14) are disposed.

Abstract: In an anchored tension member individual elements, such as steel rods or the like, extend between a pair of anchoring discs each of which is secured on a support. One support is spaced horizontally and vertically from the other so that the tension member extends at an acute angle to the horizontal. In assembling and installing the tension member, first one individual element is placed through a tubular casing resting on the support of a support structure which incorporates one of the supports. Next, the individual element is tensioned between and anchored to the anchoring discs. During this operation, the tubular casing is lifted off the surface and extends rectilinearly between and is spaced from both of the anchoring discs. In turn, the remaining individual elements are placed through the tubular casing, tensioned and then anchored to the anchoring discs. As a result, the tension member can be installed in position without additional auxiliary apparatus, such as lifting devices and scaffolds.

Abstract: A suspension bridge has a pair of horizontally spaced towers between which is spanned a main catenary cable. A flexible spacer element, normally a cable, extends along the main cable between the towers and is provided with generally equispaced spacers. Respective hanger assemblies are fixed at the spacers and can slide on the main cable between the towers. Respective upright hangers defining a vertical plane with the main cable have upper ends connected to the hanger assemblies and lower ends and are provided with adjusters between these ends for shortening and lengthening the distance therebetween. Respective girders are secured to the lower ends and extend generally perpendicular to the plane and respective path sections extend generally horizontally and each have one end hooked over a respective one of the girders and another end hooked over an adjacent girder.

Abstract: A suspension bridge has a first deck supported from a pair of suspension cables by hangers and a second deck independently supported from a pair of suspension cables by hangers. The two parallel decks are separated by a gap whose width is not less than that of either of the decks and is preferably three or more times the width of a deck. The decks are joined at intervals along their length by stiff transverse girders 22 and intervening diagonal shear braces so that the two decks behave essentially as a single rigid body in regard to torsional movement. This results in very high aerodynamic damping of both torsional and bending modes of oscillation.

Abstract: A suspended rail assembly, especially for monorail vehicles, comprises a plurality of support masts bridged by a suspension cable from which a rail is supported by suspenders. In an unloaded state, an upward bow is imparted to the rail and each mast is provided with a beam elastically mounted therein and pivotal about a horizontal axis perpendicular to the rail for rounding out the rail.

Abstract: To prevent longitudinal displacement of the support or catenary cable and the load carrying, tensioned cable of the suspension system, the spacers or hangers between the catenary or support cable and the carrier cable, as well as the suspension and tension of these cables, are so arranged that, in side view, the two cables touch each other at the midpoint between the pylon to provide for equalization of tension in the cables. At that position, a tension or force equalization plate is clamped to both the support cable as well as to the carrier cable, thereby preventing relative longitudinal displacement of the cables with respect to each other.

Abstract: The dock includes a pair of substantially vertical support members having a vertically adjustable collar mounted on each. The deck portion of the dock has one end attached to the pair of adjustable collars and the other end supported through at least one pair of cables, each attached proximate the free end of the deck member and passing over a V-way at the top of the respective vertical support member with its other end finally anchored to the ground inland of the shoreline. The dock is thus vertically adjustable by means of the cables and collars to accommodate to the height of the changing levels of water. It is furthermore pivotable upwardly from the water surface to avoid damage such as might result in periods of high water or winter ice formation along the shoreline.