Abrégé

A pier top swivel method for a continuous steel truss, comprising: performing cantilever assembly on a continuous steel truss on a pier top of a swivel pier (1) until a maximum cantilever state; swiveling the continuous steel truss to a preset position of a bridge; temporarily locking the continuous steel truss using a temporary support (7); installing a mid-span closure segment and a side-span post-assembly segment of the continuous steel truss; and installing a permanent support (10) below the continuous steel truss. According to the method, the temporary support (7) is provided on the pier top, supporting feet (9) and reinforcing cross struts (4, 51, 52) cooperate to disperse and reduce the concentrated stress condition of the steel truss, the problems that local rods of the steel truss are subjected to large stress and a joint structure is difficult to design are solved, thereby ensuring the pier top swivel of a continuous steel truss.

Classes IPC  ?

• E01D 21/00 - Procédés ou appareils spécialement adaptés pour ériger ou assembler des ponts
• E01D 21/08 - Procédés ou appareils spécialement adaptés pour ériger ou assembler des ponts par un mouvement de rotation du pont ou de sections du pont
• E01D 1/00 - Ponts en général
• E01D 19/00 - Détails des ponts

Abrégé

The present invention relates to the technical field of bridge construction, and in particular to a construction method for the replacement of a girder structure of a bridge. According to the present invention, an old girder serves as both a construction access and a nose girder for a new girder; the demolition of the old girder and the installation of a new girder are carried out throughout the dragging process, thereby reducing the size of the temporary girder storage site; by means of the uninterrupted continuous dragging, the construction period is effectively shortened, and the cost is reduced; and no water-related project is involved, which is conducive to flood discharge and environmental protection. The present invention is applicable to the replacement of girders of existing long and large steel bridges on highways and railways, and can be popularized in reconstruction projects for steel bridges on existing lines.

Classes IPC  ?

• E01D 22/00 - Procédés ou appareils pour réparer ou renforcer les ponts existants

Abrégé

Disclosed are a toe-shaped track beam and a straddle-type monorail traffic system. The toe-shaped track beam comprises: beam bodies, which are sequentially connected end to end; first flange plates, which are connected to one side of the bottoms of the beam bodies; second flange plates, which are connected to the other side of the bottoms of the beam bodies; and connecting positions, which are arranged on the first flange plates and/or the second flange plates and are used for being connected to a rail pillow block. According to the present invention, structures such as supports and anchor boxes do not need to be arranged in a tunnel, such that the cross section of the tunnel can be significantly reduced, the construction cost is reduced, all loads can be prevented from being intensively enacted on the bottom of the tunnel, and the force applied to the bottom of the tunnel is effectively and uniformly dispersed.

Classes IPC  ?

• E01B 25/08 - Voies pour monorails, le centre de gravité du véhicule étant au-dessus du rail porteur
• E01B 25/10 - MonorailsRails auxiliaires d'équilibrageSupports ou connexions pour ces rails