云南师范大学学报（自然科学版）2025，Vol.45Issue(4)：17-22,29,7.DOI:10.7699/j.ynnu.ns-2025-039
基于有限元动力分析的减隔震桥梁梁体位移协同控制研究
Coordinated Control of Superstructure Displacement in Seismically Isolated Bridges Based on Dynamic Finite Element Analysis
摘要
Abstract
To address the displacement control of isolated bridge girders under seismic waves,a method-ology integrating"finite element dynamic analysis-displacement response identification-coordinated seismic isolation control"was proposed.A 3D finite element model considering pile-soil interaction was established,and nonlinear time history analysis was conducted to compare the differential effects of ar-tificial and natural waves on beam displacement at E2 seismic level.Results indicate:(1)Under artifi-cial waves,beam-end displacements increased by compared to natural waves;(2)Expansion joint dis-placement discrepancies(up to 405 mm)at mid-span piers posed unseating risks;(3)A coordinated sys-tem combining high-performance soft steel dampers with horizontal force-dispersing rubber bearings reduced peak displacement and pier seismic response,without significantly increasing superstructure displacement.关键词
地震波/梁体位移/减隔震系统/软钢阻尼器/时程分析Key words
Seismic waves/Beam displacement/Seismic isolation system/Soft steel damper/Time history analysis分类
交通工程引用本文复制引用
康艳武,罗媛媛,杨洋..基于有限元动力分析的减隔震桥梁梁体位移协同控制研究[J].云南师范大学学报（自然科学版）,2025,45(4):17-22,29,7.基金项目
国家自然科学基金资助项目(52278309). （52278309）
