市政技术2024，Vol.42Issue(4)：172-183,244,13.DOI:10.19922/j.1009-7767.2024.04.172
底部填芯预制节段拼装桥墩抗震性能数值仿真分析
Numerical Simulation Analysis of Seismic Performance of Prefabricated Segmental Assembled Piers with Core Filling at the Bottom
摘要
Abstract
In order to promote the application of prefabricated segmental assembled piers in the complex environ-ment of mountainous areas and strong seismic areas,a kind of prefabricated segmental assembled pier with core fill-ing at the bottom is proposed.ABAQUS finite element model is used to discuss the influence of key parameters such as the height of core filling sections,the initial tensioning force and the reinforcement ratio of energy dissipation bar on the seismic performance of the prefabricated segmental assembled piers with core filling at the bottom.The results show that the bearing capacity and energy consumption capacity of the prefabricated segmental assembled piers with core filling at the bottom increases significantly with the increase of the height of core filling sections.But the residual displacement and the width of the joint opening in the upper part of the core filling sections also increase;With the increase of the initial tensioning force,the bearing capacity and energy consumption capacity of the prefabricated segmental assembled piers with core filling at the bottom increase slightly,and the residual displacement and the damage of the concrete at the bottom of the pier are basically unchanged;With the increase of the reinforcement rate of energy dissipation bar,the bearing capacity and energy consumption capacity of the prefabricated segmental as-sembled piers with core filling at the bottom increases.But the width of the upper joint opening of the core-filled segment increases.The results can provide reference for the reasonable construction of precast segmental piers with core filling at the bottom,and promote the application of precast segmental piers in mountainous areas with complex environments and strong seismic zones.关键词
预制节段拼装桥墩/底部填芯/抗震性能/填芯段高度/初始张拉力/耗能钢筋配筋率Key words
prefabricated segmental assembled piers/core filling at the bottom/seismic performance/height of core filling section/initial tensioning force/reinforcement ratio of energy dissipation bar分类
交通运输引用本文复制引用
郦炎森,贾俊峰,杨凯,张凯迪,杨大海,赵建瑜,邓贺丹..底部填芯预制节段拼装桥墩抗震性能数值仿真分析[J].市政技术,2024,42(4):172-183,244,13.基金项目
北京市自然科学基金(8234060) （8234060）
