A structural plane is presented for forming a variable depth structure constructed of adjustable modules. Each module is formed of four links connected with revolute joints. The modules are connected at adjacent lateral joints and by upper and lower chords connecting the upper and lower revolute joints of the modules. The ultimate lateral joints of the modules at each end are connected to each end of the structural plane. The adjustable module and other components can form two- and three-hinged arches made of standard rolled steel sections.

A support structure including a tension-compression element is composed of tension-compression bars that are connected in real joints as well as tension straps that extend from one joint to another. The outermost tension-compression bars are connected in one respective knot. Two pressurized hollow members that are surrounded by a cover are arranged on both sides of a plane that extends through the tension-compression element such that the linear tensions generated in the cover preload the tension straps on the plane of the tension-compression element, secure the tension-compression bars against bending, and stabilize the joints. The linear tensioning components that extend perpendicular to said plane of symmetry strut the tension-compression element against lateral bending. Air-tight, optionally elastic pneumatic elements can be inserted into the hollow members.

A support structure including a tension-compression element is composed of tension-compression bars that are connected in real joints as well as tension straps that extend from one joint to another. The outermost tension-compression bars are connected in one respective knot. Two pressurized hollow members that are surrounded by a cover are arranged on both sides of a plane that extends through the tension-compression element such that the linear tensions generated in the cover preload the tension straps on the plane of the tension-compression element, secure the tension-compression bars against bending, and stabilize the joints. The linear tensioning components that extend perpendicular to said plane of symmetry strut the tension-compression element against lateral bending. Air-tight, optionally elastic pneumatic elements can be inserted into the hollow members.

A method for launching/constructing a bridge using assembly of a precast bottom plate and a concrete-filled steel tube truss girder, wherein a CFT truss girder and a precast bottom plate are provisionally assembled, thereby forming a segment, and then a plurality of segments are successively launched, thereby constructing a bridge.

A method for launching/constructing a bridge using assembly of a precast bottom plate and a concrete-filled steel tube truss girder, wherein a CFT truss girder and a precast bottom plate are provisionally assembled, thereby forming a segment, and then a plurality of segments are successively launched, thereby constructing a bridge.

Composite decks increase bridge strength and stiffness. Prestressed composite open web steel girder has added advantage of high strength cable support. Results of typical 125 m span bridges having heights of 9.0 m, 10.0 m and 12.5 m, and another 50.0 m span and 2.5 m height are given. Member stresses and bridge deflections during erection remained safe. Average steel off take for the 125 m bridge is 2.65 t/m and for the 50 m span bridge it is 1.77 t/m for limiting live load deflection of Span/800. Its reserve strength is 3.2 times service condition live load.

The girders are panel wise workshop fabricated, assembled at site, jacked up or crane lifted to secure over bearings. Connection of the cross members, and onsite deck casting in parts with stage wise bottom chord prestressing is carried out. Short to long span bridges for single or multiple lanes in road, rail, metro rail, and coastal link projects are feasible.

A large-span corridor structure composed of arc-shaped cantilever trusses and stay cable supporting structures is provided, comprising cantilever trusses with arc-shaped facades, orthogonal connecting trusses at a corridor, connecting trusses at cantilever portions, corridor truss structures, and stay cable supporting structures; the cantilever trusses with arc-shaped facades are composed of two sets of ultra-long cantilever trusses with arc-shaped facades and triquetrous planes which are supported by ground and symmetrical, and each are set of ultra-long cantilever trusses with arc-shaped facades and triquetrous planes are formed of several ultra-long cantilever trusses with arc-shaped facades and triquetrous planes arranged in parallel at a certain distance. The beneficial effects of the present disclosure are: the large-span corridor structure composed of arc-shaped cantilever trusses and stay cable supporting structures provided serves the combination of the cantilever trusses with arc-shaped facades and the orthogonal truss at the corridor as the supporting truss core system, and the performance of lateral force resistance and torsion resistant of the overall structure can be enhanced by the connecting trusses at cantilever portions.

A large-span corridor structure composed of arc-shaped cantilever trusses and stay cable supporting structures is provided, comprising cantilever trusses with arc-shaped facades, orthogonal connecting trusses at a corridor, connecting trusses at cantilever portions, corridor truss structures, and stay cable supporting structures; the cantilever trusses with arc-shaped facades are composed of two sets of ultra-long cantilever trusses with arc-shaped facades and triquetrous planes which are supported by ground and symmetrical, and each are set of ultra-long cantilever trusses with arc-shaped facades and triquetrous planes are formed of several ultra-long cantilever trusses with arc-shaped facades and triquetrous planes arranged in parallel at a certain distance. The beneficial effects of the present disclosure are: the large-span corridor structure composed of arc-shaped cantilever trusses and stay cable supporting structures provided serves the combination of the cantilever trusses with arc-shaped facades and the orthogonal truss at the corridor as the supporting truss core system, and the performance of lateral force resistance and torsion resistant of the overall structure can be enhanced by the connecting trusses at cantilever portions.

The present invention relates to a method for launching/constructing a bridge using assembly of a precast bottom plate and a concrete-filled steel tube truss girder, wherein a CFT truss girder and a precast bottom plate are provisionally assembled, thereby forming a segment, and then a plurality of segments are successively launched, thereby constructing a bridge.

The present invention relates to a method for launching/constructing a bridge using assembly of a precast bottom plate and a concrete-filled steel tube truss girder, wherein a CFT truss girder and a precast bottom plate are provisionally assembled, thereby forming a segment, and then a plurality of segments are successively launched, thereby constructing a bridge.