Equal-span self-anchored span wire-arched beam cooperative system bridge

Abstract

The invention relates to an equal-span self-anchored span wire-arched beam cooperative system bridge. The equal-span self-anchored span wire-arched beam cooperative system bridge comprises a main beam, a span-wire suspender, an arched suspender, a main cable, an arch rib, a bridge tower, abutment piers and a wind brace. The main cable and the arch rib are symmetrically arranged in the transverse direction of the bridge of the main beam, the span-wire suspender and the arched suspender which are distributed in the longitudinal direction of the bridge are connected to the main cable and the arch rib correspondingly, then the main beam is formed, and flexible support to the main beam is formed. The main cable crosses over the bridge tower, the two ends of the main cable are anchored at the end of the main beam, axial pressure is applied to the main beam, the arch rib is in rigid connection with the two ends of the main beam, the axial pressure is applied to the main beam, tension and compression are mutually balanced, and the abutment piers are supported at the two ends of the whole system. According to the equal-span self-anchored span wire-arched beam cooperative system bridge, an equal-span self-anchored suspension bridge pressing the main beam and an arch-beam composite bridge pulling the main beam are combined together, part of axial pressure in the main beam is counteracted, and the stability problem caused by overlarge axial pressure borne by the main beam when the span is large and the problems of overlarge section design and insufficient bearing capacity are solved. The structural system is reasonable in stress, the self-weight of the main beam is low, the span capacity is high, the anti-seismic and the wind-resistant performance is excellent, and the bridge is another one good structural form of large and middle span bridges.

Description

technical field [0001] The invention belongs to the technical fields of civil engineering and bridge engineering, and in particular relates to a suspension cable-arch cooperative system bridge, in particular to an equal-span self-anchored suspension cable-arch beam cooperative system bridge. Background technique [0002] In addition to providing spanning functions, bridges often become a symbolic landscape of a region with their unique shapes. Among many bridge structures, suspension bridges and arch bridges have the most beautiful curved shapes. Therefore, suspension bridges and arch bridges have become bridges of choice. A very competitive solution. [0003] The self-anchored suspension bridge in the suspension bridge is a special cable-bearing bridge type, which is different from the traditional ground-anchored suspension bridge. The system not only saves the cost of anchorage, but also relaxes the bridge type to the geological conditions of the bridge site, and is also ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of excessive pressure on the main girder of the self-anchored suspension bridge and excessive tension of the longitudinal girder of the arch-beam composite bridge brought about by the increase of the span, there is no good solution at present. Try to combine these two systems, and the beam is subjected to The compression and tension of the self-anchored suspension bridge and the arch can cancel each other out, but there is no relevant research on the cooperation system between the self-anchored suspension bridge and the arch.

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