Swivel bridge with vibration isolating function and construction method of swivel bridge

Abstract

The invention provides a swivel bridge with a vibration isolating function. Pile foundations, piers and a bridge body are included. An upper bearing platform and a lower bearing platform are arrangedbetween each pile foundation and the corresponding pier, wherein the center of the upper bearing platform and the center of the lower bearing platform are connected through a spherical hinge, the partbetween the upper bearing platform and the lower bearing platform is filled with fine sand, a fine sand vibration isolating layer is formed, a plurality of supporting legs are arranged at the bottomof the upper bearing platform in the circumferential direction of the upper bearing platform, and the bottoms of the supporting legs are detachably connected with the lower bearing platform through rubber vibration isolating supports. According to the swivel bridge, by utilization of the special structure of a swivel bridge rotation system, traditional sealing compound concrete construction is eliminated, after swivel completion, the parts between the upper bearing platforms and the lower bearing platforms are filled with the fine sand to serve as the fine sand vibration isolating layers, equivalently, the vibration isolating layers are formed between the bridge structure and the lower bearing platforms, and when the great earthquake happens, the self-vibration period of the bridge structure can be prolonged, the vibration amplitude is reduced, and relative displacement of the bridge structure is very small; and meanwhile, in the process that earthquake energy is transmitted to the bridge structure, a part of earthquake energy can be consumed through interaction between fine sand, and accordingly the purpose of swivel bridge vibration isolating is achieved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a swivel bridge with an earthquake isolation function and a construction method thereof, which are suitable for bridge engineering in high-intensity earthquake areas. Background technique [0002] The bridge structure plays an important role in the development of the national economy, the promotion of cultural exchanges, and the consolidation of national defense; especially in the event of an earthquake, emergency assistance, post-disaster production recovery, and ensuring the smooth flow of life arteries occupy an important position. Therefore, the importance of earthquake resistance of bridge structures Sex is especially important. [0003] With the implementation of the "eight vertical and eight horizontal" road network of my country's high-speed railway, the construction of expressway and municipal engineering road network will inevitably intersect with...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor anti-seismic ability of the structure of the swivel bridge in the prior art and the complicated construction of the shock-absorbing and isolating structure

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