Bridge construction semi-active shock absorber capable of resisting impact of earthquake force on buildings

Abstract

The invention discloses a bridge construction semi-active shock absorber capable of resisting the impact of an earthquake force on buildings. The semi-active shock absorber comprises a top plate, a supporting base, a fixing base and a base; a first supporting block is fixedly connected to the lower surface of the top plate, a first spring is fixedly connected to the lower surface of the first supporting block, and a first buffer layer is fixedly connected to the lower surface of the first spring; the lower surface of the first buffer layer is fixedly connected with a second spring, and the lower surface of the second spring is fixedly connected with a second buffer layer. According to the invention, the bridge is buffered and damped for the first time through the protection pad on the upper surface of the top plate, and the quality of the top plate is enhanced through a PORON layer, an aerated concrete layer, a reactive powder concrete layer and arubber layer in the top plate; meanwhile, the buffering and damping capacity of the top plate is enhanced, the force from the ground is effectively buffered through the arrangement of a first buffering cushion, a steel plate and a second buffering cushion in the base, and the situation that the bridge collapses due to the fact that the bridge supporting columns are damaged by earthquakes is prevented.

Description

technical field [0001] The invention relates to the technical field of shock absorption for bridge buildings, in particular to a semi-active shock absorber for bridge buildings that resists the impact of earthquake force on buildings. Background technique [0002] Earthquake damage to bridges is mainly caused by ground surface damage and bridge earthquake damage. Surface damage includes ground cracks, landslides, landslides, bank slope slippage, and sand liquefaction. Ground cracks will cause bridge span shortening, elongation Long or piers sink. In steep mountainous areas or sandy soil and soft clay river banks, landslides, bank slides and rock rolling caused by strong earthquakes can damage bridges. In shallow saturated and loose sandy soils, Earthquakes can easily cause sand liquefaction, causing bridges to sink suddenly or unevenly, and even topple over bridges. Earthquakes often cause bank slope slipping, cracking, and collapse at slope side soil banks or ancient river ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a semi-active shock absorber for bridge construction that resists the impact of earthquake force on the building. It can effectively damp the bridge in daily life. It can still effectively support the bridge for shock absorption, and at the same time perform vibration isolation treatment on the bottom, which solves the problem that the bridge is damaged due to the earthquake and causes the bridge to collapse

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