A composite self-balancing bridge of an arch bridge and a suspension bridge and its construction method

Abstract

The invention discloses a combined self-balancing bridge of an arch bridge and a suspension bridge, which comprises a main girder structure, a bridge deck, two arch rings and two main cables, the main girder structure is connected with the arch rings through suspension cables, and the main cables are connected to the arch rings through struts. The main beam structure is connected, the upper end of the strut is hinged with the main beam structure, and the lower end of the strut is hinged with the main cable. The combined self-balancing bridge combines the force characteristics of arches and cables. The horizontal forces of the arches, cables, and beams are in a self-balancing state, and do not require external horizontal constraints, and do not generate thrust or pull to the outside. The invention also discloses a construction method, which includes abutment or pier construction, support construction, main girder structure construction, arch ring construction, sling construction, bridge deck construction, tension sling, main cable construction, strut This construction method effectively improves the efficiency of bridge completion, reduces the difficulty of construction, and saves the construction period.

Description

technical field [0001] The invention belongs to the technical field of bridges, and in particular relates to a combined self-balancing bridge of an arch bridge and a suspension bridge and a construction method thereof. Background technique [0002] Beam bridges, arch bridges, and cable bridges are different bridge structures, and their stress characteristics are different. The girder bridge is mainly subjected to the bending of the girder, the arch bridge is mainly subjected to the compression of the arch rib, and the cable bridge is mainly subjected to the tension of the cable. The spanning capacity of arch bridges and cable bridges is greater than that of girder bridges, thanks to their ability to give full play to the performance of materials. However, arch bridges mainly under compression will generate horizontal thrust at the arch foot, and the construction of long-span arch bridges requires better geological conditions so that the foundation can resist the horizontal ...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the arch bridge will generate thrust on the outside, and the suspension bridge will generate tension on the outside. If the solution is solved by the structure itself (using a tie-bar arch or a self-anchored suspension bridge), there are also certain shortcomings, resulting in material waste or unfavorable structural stress.

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