Novel stayed-cable bridge structure system

Abstract

The invention discloses a novel stayed-cable bridge structure system, comprising main bridge piers, a plurality of bridge piers which are arranged with the main bridge piers at interval, and a main girder erected on the main bridge piers and the plurality of bridge piers through support mountings. Grooves are formed at the bottom of the main girder close to the main span side of the main bridge pier; two thrust block box bodies are symmetrically arranged in the grooves along the horizontal direction; side walls at one side of the two thrust block box bodies are respectively connected with thecorresponding side walls of the grooves through steel plates, and one end surface of the two thrust block box bodies is supported on the support seat arranged in the span direction of the main bridgepier. The thrust devices are applied in arched single-slope tower double rope surface steel box girder stayed-cable bridge by using the structure of the invention, the difficult problem of anti-shockof the common single-slope tower stayed-cable bridge with middle-small span is resolved, and the thrust block box bodies of the invention can balance the horizontal force of the structure in the longitudinal direction , has clear force, simple structure and small affection on other structures and is changeable.

Description

technical field [0001] The invention relates to a rigid thrust device, in particular to a novel cable-stayed bridge structure system. Background technique [0002] As a cable system, cable-stayed bridges have greater spanning capacity than beam bridges, are more economical than suspension bridges, and have competitive advantages in terms of reasonable force and convenient construction. Due to the self-anchoring characteristics of the cables, there is no need for huge anchorages like suspension bridges, and the cable-stayed bridges have good mechanical properties and economic indicators, and have become one of the most important types of long-span bridges. Occupying an advantage, cable-stayed bridges also play an important role in the competition for ultra-long-span bridges with a span of 800-1100m. [0003] Compared with the double-tower cable-stayed bridge, the single-tower cable-stayed bridge has many advantages in terms of economy, stress, overall design and construction...

AI Technical Summary

Problems solved by technology

But the disadvantages are also relatively large: first, when the main span is fully loaded, the bridge tower will tilt with the deflection angle of the main girder, which will increase the deflection of the main girder and the negative bending moment of the side girder; The support is transmitted to the substructure, which needs a high-tonnage support to adapt to it, and the design and maintenance of the support

Difficult to replace

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