Double opposite arch structure bridge

Abstract

The invention provides a double opposite arch structure bridge and relates to a bridge structure, which comprises a main bridge floor beam, a bottom chord arched beam, a top chord cable beam, a bottom chord arched beam suspender and a top chord cable beam bracket, and is characterized in that the linear distance between the main bridge floor beam and the bottom chord arched beam and the linear distance between the main bridge floor beam and the top chord cable beam are equal, the bottom chord arched beam is arranged above the main bridge floor beam, the top chord cable beam is arranged under the main bridge floor beam, two ends of the main bridge floor beam, the bottom chord arched beam and the top chord cable beam are respectively fixedly connected to one point or the same vertical plane, and the middle parts of main bridge floor beam, the bottom chord arched beam and the top chord cable beam are connected by the bottom chord arched beam suspender and the top chord cable beam bracket so as to form a closed or semi-closed stressed whole body. Compared with the prior art, the bridge disclosed by the invention enables arched support bearing force and suspended cable hauling bearing force to form resultant force complementation, at the same time outward pushing force formed by an arched beam structure and inward pulling force formed by a suspended cable structure are mutually offset in a unified structure body and converted into vertical pressure, the destructive effect of horizontal stress on a bridge foundation is eliminated, a span can be prolonged, the bearing capacity is increased, the cost is reduced, and the disaster resisting capacity is improved, so that the bridge has good popularization and use values.

Description

1. Technical field: [0001] The invention relates to a bridge structure, in particular to a relatively double arch bridge. 2. Background technology: [0002] Arch bridges under the prior art mainly contain rigid lower-chord arch bridges, such as the Zhaozhou Bridge in Hebei, China, the Sydney Bridge in Australia, etc., and flexible upper-chord cable bridges, such as the Golden Gate Bridge in the United States and the London Tower Bridge in the United Kingdom. These technologies all apply the transfer direction of the transfer force and original structural features to extend the span of the bridge and create a classic in the history of bridge construction. However, under the existing technology, the horizontal thrust formed by the lower chord arch bridge and the horizontal tension formed by the upper chord cable bridge, the main girder body of the bridge is less or basically unable to bear and balance, and its horizontal stress is basically or mostly concentrated on the bridge...

AI Technical Summary

Problems solved by technology

It adds obstacles and difficulties to the construction of bridges in many geological and landform environments where it is impossible or difficult to build strong shoulder piers or suspension towers, or increases the cost and risk of bridge construction, limiting the application and development of these technologies

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