Structural system for controlling transverse response of cable-stayed bridge main beam, auxiliary pier and transition pier

Abstract

The invention discloses a structural system for controlling transverse response of a cable-stayed bridge main beam, auxiliary piers and transition piers. A cable-stayed bridge comprises a main beam, bridge towers, auxiliary piers and transition piers. The structural system comprises a plurality of transversely arranged first elastic supports and a plurality of first power damping devices among the main beam and the bridge towers, a plurality of transversely arranged second elastic supports and a plurality of second power damping devices among the main beam and the auxiliary piers, and a plurality of transversely arranged third elastic supports and a plurality of third power damping devices among the main beam and the transition piers. The structural system can effectively control transverse displacement and internal force response of the cable-stayed bridge main beam, the auxiliary piers and the transition piers, is simple and reasonable in execution scheme and good in economy, and can be popularized and applied to other bridge types such as suspension bridges.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a structural system for controlling the transverse response of a cable-stayed bridge girder, an auxiliary pier and a transition pier. Background technique [0002] Cable-stayed bridge is a modern bridge type with good economy and wide adaptability, and now it has developed into the mainstream bridge type of long-span bridges. The structural system of the cable-stayed bridge is directly related to the overall design, structural safety and function realization of the bridge. The long-span cable-stayed bridge has a soft structure and low damping, and is very sensitive to static and dynamic effects such as automobiles, temperature, strong winds and earthquakes. [0003] A very wide range of research work has been carried out on the structural system of cable-stayed bridges at home and abroad, but most of them focus on the research on the longitudinal structural system and...

AI Technical Summary

Problems solved by technology

The transverse wind-resistant support, transverse limit support or limit device are all transverse rigid supports. Under the action of transverse strong winds and earthquakes, the above-mentioned transverse rigid supports often cause the main girder and the tower column of the bridge tower, the main girder and the Collision occurs between the lateral limit support or limit device of the auxiliary pier, the transverse limit support or limit device of the main girder and the transition pier, and restricts the relative movement of the main girder and the bridge tower, auxiliary pier, and transition pier , this kind of rigid restraint system usually makes the lateral displacement and internal force response of the cable-stayed bridge very large, which leads to safety hazards of the main girder, auxiliary piers and transition piers

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