Bridge damping structure suitable for pile group foundation

Abstract

A disclosed bridge damping structure suitable for a pile group foundation comprises a pier, a bearing platform is fixedly poured at the bottom of the pier, and a pressure-bearing steel plate corresponding to a pile foundation at the bottom of the bearing platform is pre-buried in the bearing platform; an outer steel casing with a downward casing opening is fixedly arranged at the bottom end of the pressure-bearing steel plate; the bottom of the outer steel casing penetrates out of the bottom end of the bearing platform, and the top end of the pile foundation is covered with the outer steel casing; the top of the pile foundation is fixedly provided with an inner steel casing wrapping the pile foundation; and the inner steel casing is a cylinder body without a bottom face, and a radial gap is formed between the side wall of the inner steel casing and the side wall of the outer steel casing. According to the damping structure, rigid connection between the bearing platform and the pile foundation can be avoided, the damping effect is good, and the damping structure is suitable for the pile group foundation in the bridge.

Description

technical field [0001] The invention relates to the field of bridge anti-seismic technology, in particular to a bridge anti-seismic structure suitable for pile group foundations. Background technique [0002] The commonly used anti-seismic systems of bridges are mainly divided into two types: ductile anti-seismic systems and seismic isolation systems. The commonly used ductile anti-seismic system is realized by setting plastic hinges at the bottom or top of the pier. The shock-isolation anti-seismic system mainly consumes seismic energy by setting shock-isolation supports or other energy-consuming devices, thereby reducing the effect of earthquake action. The commonly used seismic isolation system is generally realized by setting anti-vibration bearings or other anti-vibration devices between the upper and lower parts, which cannot be integrated with the bridge structure. In the design of the lower structure of the bridge, the cap and the pile foundation are often designed...

AI Technical Summary

Problems solved by technology

The commonly used seismic isolation system is generally realized by setting anti-vibration bearings or other anti-vibration devices between the upper and lower parts, which cannot be integrated with the bridge structure

In the design of the lower structure of the bridge, the cap and the pile foundation are often designed as a consolidation system, that is, the cap and the pile top are rigidly connected by pouring concrete together, which is not convenient for the installation of shock-absorbing and isolating devices

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