Plane cable type anti-collision limit comb telescopic device

Abstract

The invention relates to a planar cable through type anti-collision limiting comb teeth expansion device. The existing bridge comb teeth expansion device is utilized, a porous channel is formed in a horizontal plane vertical to the driving direction in the middle part of a comb teeth plate in the thickness direction, a high-strength flexible steel wire rope penetrates through the porous channel, the steel wire rope with certain looseness is designed according to the limit required expansion amount obtained through anti-earthquake analysis and calculation of a bridge structure, and the steel wire rope is fixed at the middle part of each comb teeth plate by a fixing device. When adjacent girder bodies get close and are about to collide under the action of earthquakes and other impacts, the existence of the high-strength flexible steel wire rope controls the further approaching of the girder bodies to avoid collision and play a role in limiting; when the adjacent girder bodies depart from each other, that is, when the risk of falling of a girder is about to happen, the high-strength flexible steel wire rope plays a role at the same time to limit the expanding displacement of the girders, and the falling of the girder is controlled. The planar cable through type anti-collision limiting comb teeth expansion device is simple in construction, saves materials, is stable in anti-seismic property, is convenient to produce and use, and is safe.

Description

Technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a bridge plane cable-through type anti-collision limiting comb telescopic device. Background technique [0002] The investigation of bridge earthquake damage shows that collision and even drop of bridge beam ends are common diseases of bridges in earthquakes, causing significant economic and property losses. In recent decades, China's modernization has developed vigorously, with large-scale construction of large-span bridges and urban viaducts. Therefore, in order to avoid the problem of beam end collision and beam drop, scholars at home and abroad have carried out a large number of beam end collision mechanism and anti-drop beam measures, but how to use the comb telescopic device that has been rapidly developed in recent years to carry out anti-collision and limiting aspects Research is relatively lacking. The current bridge expansion devices generally do not...

AI Technical Summary

Problems solved by technology

Therefore, in order to avoid beam end collision and beam falling problems, scholars at home and abroad have carried out a large number of researches on beam end collision mechanism and anti-beam fall prevention measures. Research is lacking

The current bridge telescopic devices generally do not have anti-collision and limit functions

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