Integral abutment-steel pipe concrete pile joint of lead core laminated rubber device

Abstract

The invention relates to an integral abutment-steel pipe concrete pile joint of a lead core laminated rubber device. The integral abutment-steel pipe concrete pile joint comprises a concrete abutmentand a steel pipe concrete pile, the integral abutment-steel pipe concrete pile joint is characterized in that a lead core laminated rubber device is arranged at the top of the steel pipe concrete pile, the lead core laminated rubber device comprises laminated rubber and at least one lead core, the laminated rubber is formed by alternately laminating rubber sheets and stiffening steel plates in alayered mode, and a hole used for containing the lead core is formed in the laminated rubber. The invention further provides a construction method of the joint. The joint deformation capacity and theenergy absorption capacity can be improved, the joint deformation recovery time is shortened, and post-earthquake residual displacement is reduced.

Description

technical field [0001] The invention belongs to the field of integral abutment bridge structure design, in particular to an integral abutment-steel tube concrete pile node with a lead core laminated rubber device. Background technique [0002] In order to solve the problem of expansion and deformation of bridges under the action of temperature, the traditional method is to set expansion joints. However, under normal working conditions, expansion joints are easily damaged by factors such as rain erosion, foreign matter filling, vehicle load and foundation settlement. Integral abutment bridges without expansion devices and supports at the abutment, the girder end is directly integrated with the abutment pouring, which fundamentally solves the problem of damage to bridge expansion joints. However, the deformation and force of the bridge superstructure are directly transmitted to the substructure, which puts forward higher requirements on the deformation capacity of the substruc...

AI Technical Summary

Problems solved by technology

The use of rubber plates and laminated rubber devices at the integral abutment-pile joints can improve the deformation capacity and normal performance of the bridge system and reduce damage to the pile body, but the laminated rubber device may cause large damage under the action of a large earthquake. Nodal Deformations and Residual Displacements

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