桩-土效应对波形钢腹板连续梁桥地震易损性影响分析  

Analysis of Pile-Soil Effect on Seismic Vulnerability of Continuous Beam Bridges with Corrugated Steel Webs

作　　者：高非凡 王竞宇 陈博宇 张运波[1,2] GAO Feifan;WANG Jingyu;CHEN Boyu;ZHANG Yunbo(Key Laboratory of Roads and Railway Engineering Safety Control Ministry of Education,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang,Hebei 050043,China)

机构地区：[1]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,河北石家庄050043 [2]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《河北工程大学学报(自然科学版)》2025年第1期82-89,共8页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51778377)。

摘　　要：针对桩-土相互作用对波形钢腹板桥梁构件易损性的影响问题,通过ABAQUS有限元软件,建立了一典型波形钢腹板梁桥的三维基底固结模型以及桩-土-桥模型,通过PEER数据库筛选出15条地震动记录,以位移延性比为损伤指标,对模型进行IDA时程分析,通过对比墩底固结模型及桩-土-桥模型桥梁构件在四种损伤情况下的易损性曲线,得出桩-土效应对桥墩及支座易损性的影响规律。计算结果表明:桩-土-桥有限元模型中桥墩及支座发生损伤破坏的概率均大于基底固结模型中桥墩及支座发生损伤破坏的概率,因此在实际工程进行易损性分析时,需要考虑桩-土效应对结构易损性的影响。In response to the influence of pile-soil interaction on the vulnerability of corrugated steel belly plate bridge components,a three-dimensional foundation consolidation model and pile-soil bridge model of a typical corrugated steel belly plate beam bridge were established using ABAQUS finite element software.Fifteen seismic records were selected from the PEER database,and the displacement ductility ratio was used as the damage index to conduct IDA time history analysis on the model.By comparing the vulnerability curves of bridge components under four damage conditions in the pier bottom consolidation model and the pile-soil bridge model,the influence of the pile-soil effect on the vulnerability of bridge piers and supports was obtained.The calculation results show that the probability of damage and failure of bridge piers and bearings in the pile-soil bridge finite element model is higher than that in the foundation consolidation model.Therefore,when conducting vulnerability analysis in practical engineering,it is necessary to consider the influence of pile-soil effect on structural vulnerability.

关 键 词：ABAQUS 桩-土效应 波形钢腹板连续梁桥 易损性分析 

分 类 号：TU442.5[建筑科学—岩土工程]