A slide-type shock absorber for the erection of simply supported steel beams of a sea-crossing bridge

Abstract

The invention discloses a slide way type shock absorber for erecting a cross-sea bridge simple support steel beam. The slide way type shock absorber comprises a support and a sliding block. The support is fixed to the top of a bridge pier, and the upper end of the support is opened. A sliding seat is arranged inside the support. The bottom face of the sliding seat is connected with the support through springs. The two sides of the sliding seat are connected with the support through limiting pins. The top face of the sliding seat is provided with a slide way used for locating the steel beam. The sliding block is fixed to the bottom of the to-be-erected steel beam. The bottom face of the sliding block is a spherical surface and is matched with the slide way in radius. As the position of theto-be-erected steel beam changes, the sliding block is in contact with or is separated from the slide way. The slide way type shock absorber is simple in structure and easy to machine; when the beam is dropped, a beam body is automatically located at the lowest point of the slide way, it is guaranteed that the steel beam is positioned precisely, the automatic locating function is achieved, and thebeam dropping precision is improved; the sliding block and the sliding seat are in contact to generate friction and energy consumption, the springs play a buffer role, and the energy consumption andbuffer effects can be achieved in the beam dropping process; and the steel beam erecting efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a slideway type shock absorber used for erecting simply supported steel girders of cross-sea bridges. Background technique [0002] Under the background of the country's vigorous development of marine projects, the construction of cross-sea bridges in my country is in a stage of vigorous development, such as the completed Hangzhou Bay Bridge, the Xiamen-Zhangzhou Bridge, the Hong Kong-Zhuhai-Macao Bridge and the Pingtan Strait under construction. Bridge etc. During the construction of the sea-crossing bridge, in order to reduce offshore operations, the construction of simply supported steel girders is also a method of prefabricating the whole hole in a factory and erecting the bridge site with floating cranes. Different from inland river girder erection, in the process of erecting simply supported steel girders of cross-sea bridges, it is necessary to face complex env...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing steel girder buffer shock absorbing structure has the problems of inconvenient operation and low adjustment accuracy

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