Cable arch bridge

Abstract

The invention discloses a cable arch bridge. The cable arch bridge is mainly composed of an arch rib, cable ropes, hanging rods, a bridge floor system, high abutments and splay saddles. The splay saddles are arranged at the tops of the high abutments. The bottoms of the high abutments are provided with foundations. The cable ropes are anchored on the high abutments. Arch supports of the arch rib are located on the high abutments. The hanging rods are arranged between the cable ropes and the bridge floor system as well as between the arch rib and the bridge floor system, so that a part of loads of the bridge floor system are transmitted to the cable ropes through the hanging rods between the cable ropes and the bridge floor system, and the other part of the loads are transmitted to the arch rib through the hanging rods between the arch rib and the bridge floor system; and thus, the horizontal component of the cable ropes takes part in balancing of horizontal thrust produced through the arch rib, stress of the arch rib is relieved, and the stability of the arch rib is improved. The cable arch bridge is reasonable in stress, has the advantages of being high in bearing capacity and span capacity, good in economic return, attractive in appearance and the like, and is especially suitable for soft soil areas and 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 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 Bridge bui...

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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