Oblique-damping restraint system for main girders of cable-stayed bridge

Abstract

The invention provides an oblique-damping restraint system for main girders of a cable-stayed bridge. The oblique-damping restraint system consists of a group of obliquely arranged dampers, wherein one ends of the dampers are connected to the main girders of the cable-stayed bridge, and the other ends of the dampers are connected to the cable tower of the cable-stayed bridge; the dampers are symmetrically arranged on two sides of the cable tower along the longitudinal axis of the cable-stayed bridge; according to the obliquely arranged dampers, a horizontal plane is adopted as a datum plane, an included angle is formed between the arrangement axis of each damper and the longitudinal axis of each of the main girders, and damping restraint in the longitudinal bridge direction and damping restraint in the transverse bridge direction are simultaneously provided for the main girders. The fully new damping restraint system for main girders of the cable-stayed bridge, disclosed by the invention, is created through the integration of a technique of vibration damping and seismic resistance, a technique of vibration damping and wind resistance, a technique of two-way control, and a technique of limited limiting; the damping restraint system fills up the blank of the bridge vibration damping technique, and a new standard for the bridge vibration damping technique is provided; the bridge vibration is comprehensively controlled, and the safety, the durability and the economy of the bridge are guaranteed; the structure is simplified; an accessible condition, a detectable condition, a maintainable condition and a replaceable condition are good.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an oblique damping restraint system for a main girder of a cable-stayed bridge. Background technique [0002] Bridge damping and vibration reduction technology is one of the most advanced technologies in the field of civil engineering. Foreign bridge powers such as Europe, America, and Japan started research on this technology earlier, with relatively mature theories and rich experience. There is a big gap in the research and application of this technology. However, due to the decrease in bridge construction in foreign countries in recent years, the research atmosphere is not as good as before, and the technical development is also weak. In contrast, in China, the construction of bridges is in the ascendant, and the demand for innovation is increasing day by day, and it is gradually becoming the center of technological development. [0003] Cable-stayed bridges have l...

AI Technical Summary

Problems solved by technology

[0009] For the longitudinal damping and restraint system of the main girder of the above-mentioned cable-stayed bridge, there are technical blanks in terms of vibration and wind resistance, and a complete vibration and wind resistance and seismic damping and restraint system has not yet been established. adverse effects and other problems, the present invention provides a cable-stayed bridge girder oblique damping restraint system

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