结构工程师2026，Vol.42Issue(2)：93-101,9.DOI:10.15935/j.cnki.jggcs.202602.0010
库区复建公路桥梁多点激励地震反应分析
Analysis of Seismic Responses of Multi-Support Earthquake Excitation on Highway Bridge Reconstruction in Reservoir Area
摘要
Abstract
Taking the Mishi Reservoir Project in Liangshan Prefecture of Sichuan Province,Traffic Reconstruction Road Luobo Bridge,as the engineering background,a spatial truss model of a high pier and large-span continuous rigid frame bridge is established,and seismic design calculations are carried out according to the multi modal response spectrum and time history analysis methods.The time history analysis method focuses on considering both consistent and multi-point excitations,and provides a detailed analysis and comparison of various calculation methods to obtain the seismic responses of bridges.Calculations results show that the smaller the shear wave velocity,the greater the difference between the calculated internal forces and displacements of key sections in large-span continuous rigid frame bridges considering multi-point excitation and consistent excitation.The application of multi-point excitation in seismic design can provide a deeper and more realistic understanding of the stress state of bridges under multi-point seismic motion.关键词
高墩/大跨度/多点激励/行波效应/反应谱/剪切波速Key words
high pier/large span/multiple incentives/traveling wave effect/response spectrum/shear wave velocity分类
交通工程引用本文复制引用
于西尧,黄小勇,王宁,鞠炳照,张玉彬..库区复建公路桥梁多点激励地震反应分析[J].结构工程师,2026,42(2):93-101,9.基金项目
内蒙古鄂尔多斯科技计划项目(2022YY035) （2022YY035）
