Hydraulic energy consumption device for self-resetting pier, anti-seismic system and construction method

Abstract

The invention relates to a hydraulic energy consumption device for a self-resetting pier, an anti-seismic system and a construction method, and belongs to the field of bridge seismic resistance. According to the hydraulic energy consumption device, an annular oil cylinder, an oil pressure propelling valve, an oil pressure propelling rod and a distributed acting head are adopted, wherein the oil pressure propelling valve, the oil pressure propelling rod and the distributed acting head are arranged on the oil cylinder and matched with one another, so that displacement generated by left-right swinging of the self-resetting pier is reduced, and the energy consumption capacity of the self-resetting pier is improved; a hydraulic energy consumption device is coaxially arranged in a UHPC (Ultra High Performance Concrete) formwork of the system; and the distributed acting head is pushed by the oil pressure pushing rod to apply pressure to the self-resetting pier. The construction method of the anti-seismic system comprises the steps that the self-resetting pier hydraulic energy consumption device is machined, the UHPC formwork is installed on the outer side of the hydraulic energy consumption device, concrete is poured into the UHPC formwork, and the edge is sealed through glue. According to the hydraulic energy dissipation device for the self-resetting pier, the problem that the energy dissipation capacity of the self-resetting pier is low can be solved, the energy dissipation capacity of the self-resetting pier can be greatly improved, and therefore the anti-seismic capacity of a bridge is improved, and particularly the capacity of resisting rare occurrence type large earthquakes is improved.

Description

technical field [0001] The invention relates to a hydraulic energy-consuming device for a self-resetting bridge pier, an anti-seismic system and a construction method, and belongs to the field of anti-seismic bridges. Background technique [0002] In modern bridge structures, the severe damage or even collapse of the bridge due to the damage of piers has become an important feature of bridge earthquake damage. In order to improve the seismic capacity of bridge piers, a new type of self-resetting bridge piers has been proposed in the field of bridge seismic resistance. However, the research will find that since the contribution of the prestressed beams in terms of energy dissipation is basically negligible, the energy dissipation capacity of the self-resetting swaying pier is insufficient, resulting in a large displacement requirement. Although some existing studies choose to install energy-dissipating devices at the bottom of self-resetting bridge piers, this still cannot...

AI Technical Summary

Problems solved by technology

However, the research will find that since the contribution of prestressed beams in energy dissipation is basically negligible, the energy dissipation capacity of self-resetting swaying piers is insufficient, resulting in a large displacement demand

Although some existing studies choose to install energy-dissipating devices at the bottom of self-resetting bridge piers, this still cannot solve the problem of corrosion of energy-dissipating steel bars in self-resetting bridge piers exposed to air for a long time

The long-term corrosion of steel bars will reduce the seismic capacity of bridge piers, which greatly reduces the use efficiency of self-resetting bridge piers, which limits its promotion and application to a certain extent

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