continuous cable arch bridge

Abstract

The invention provides a continuous cable arch bridge which is mainly composed of a main arch, side arches, a main cable, slings, short towers and a girder. The short towers are arranged on the junctions of the main arch and the side arches; foundation piers and abutments are arranged below arch feet of the main arch, arch feet of the side arches and the short towers; the two ends of the main cable are anchored on the arch feet of the side arches on the two sides of a bridge, and the tops of the short towers support the main cable; the slings are arranged between the main arch and the girder, between the side arches and the girder and between the main cable and the girder of the main arch area, one part of the load of the girder is transmitted to the main cable, the other part of the load of the girder is transmitted to the main arch and the side arches, stress of the main arch and the side arches is reduced, and the stability of the main arch and the side arches is increased. The horizontal component force of the main cable participates in balancing the horizontal thrust generated by the side arches, and the horizontal thrust of the main arch is balanced by the horizontal thrust of the side arches. The continuous cable arch bridge is reasonable in stress, has the advantages of being high in bearing capacity, high in span capacity, good in economic benefit, attractive in appearance and the like, is specially suitable for soft soil areas and is applied to multifunctional bridges.

Description

technical field [0001] The invention belongs to a cooperation system of an arch bridge and a suspension cable structure, and in particular relates to a continuous cable arch bridge. Background technique [0002] The arch structure is mainly under compression, and the main load-bearing structure of the arch bridge is the arch ring or arch rib. Under the action of vertical load, the pier or abutment will bear the horizontal thrust. And this horizontal thrust will significantly offset the bending moment in the arch ring (or arch rib) caused by the load, so compared with the beam with the same span, the bending moment and deflection of the arch are much smaller. Arch bridges have large spanning capacity, strong adaptability to terrain, economical cost and beautiful appearance, and are widely used in bridge structures. The application of arch bridges in our country has a long history and has achieved brilliant achievements. The most representative one is the Zhaozhou Stone Arch...

AI Technical Summary

Problems solved by technology

However, in general conventional ground-anchored suspension bridges, it is necessary to build bulky anchors to anchor cables, which results in a very large amount of foundation work for the anchorage structure in places with poor geological conditions, which often becomes a difficult point in the project; ground anchors The anchorage and anchorage foundation of the suspension bridge occupy a considerable part of the project cost, and become an important aspect affecting the structural economy of the suspension bridge; in urban areas or tourist areas, building bulky anchorages will also have a negative impact on the aesthetics of the environment

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