Working method of anti-resonance device for steel-concrete composite bridge

Abstract

The invention discloses a working method of an anti-resonance device for a steel-concrete composite bridge and relates to the field of bridges. A first damping spring and a second damping spring in abuffer rod piece are used for buffering vibration in a horizontal direction and a third spring and a first spring are used for buffering vibration in a vertical direction when corresponding deformation occurs between two steel pieces during smaller first vibration, and the steel pieces recover under an elastic action of the springs after vibration is relieved; when large second vibration occurs, corresponding deformation occurs between the two steel pieces; due to deformation, an upper welding part is not enough to provide support and the upper welding part deforms; and the deformation of theedge of the welding part drives the lower welding part through the second spring so that the upper welding part and the lower welding part are close to each other, a bulge is matched with a notch in an embedded manner, the upper welding part can still be bent within a certain bent range after being embedded, the inner side of the notch starts to contact after the vibration is continuously increased, and the lower welding part with the bulge with higher rigidity provides enough support and buffer.

Description

technical field [0001] The invention relates to the field of composite bridges, in particular to a working method of an anti-resonance device for steel-concrete composite bridges. Background technique [0002] When the steel-concrete composite bridge is built, the resonance problem is considered on the ground, and the vibration problem caused by pedestrians and vehicles passing the bridge needs to be considered. The bridge vibrates under the influence of external forces. When the frequency of vibration is equal to the natural frequency of the bridge material itself, it will cause bridge resonance. , resulting in a greatly increased amplitude, which increases the risk of bridge collapse and fracture due to vibration. [0003] In the process of traditional steel-concrete composite bridge construction, expansion joints are installed between the bridge panels to achieve anti-resonance effects. However, the transmission bridge expansion joint has a simple structure and general e...

AI Technical Summary

Problems solved by technology

However, the transmission bridge expansion joint has a simple structure and general expansion performance; and when installing the traditional bridge expansion joint, it is necessary to connect the pre-embedded steel bars on both sides with the pre-embedded steel bars inside the bridge deck, which is inconvenient to install

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