东南大学学报（英文版）2018，Vol.34Issue(3)：340-348,9.DOI:10.3969/j.issn.1003-7985.2018.03.009
考虑碰撞-摩擦耦合效应的钢筋混凝土连续梁桥地震响应分析
Seismic response analysis of a reinforced concrete continuous bridge considering coupling pounding-friction effect
摘要
Abstract
To evaluate the coupling pounding-friction effect between bridge girders and retainers and its influence on bridge seismic response,a reinforced concrete (RC) continuous bridge is selected as the research object.Three bridge finite element (FE) models were built using OpenSees,in which the longitudinal and transverse pounding elements,as well as the transverse failure element of bearings were introduced.Based on this,the seismic response analysis considering the coupling pounding-friction effect was conducted for the continuous bridge subjected to bi-directional ground motions.Furthermore,the influential parameters were analyzed.The analysis results indicate that the coupling pounding-friction effect can alter the internal force distribution of the bridge structure and generate additional torsional force to bridge columns.The friction coefficient and longitudinal pounding gap size are two important factors.The appropriate friction coefficient and longitudinal pounding gap size can significantly reduce seismic response of girders,and effectively transfer part of the girder inertia force from the fixed columns to the sliding columns,which can reduce the seismic demands of the fixed columns and improve the seismic performance of continuous bridge structures.关键词
碰撞-摩擦耦合效应/钢筋混凝土连续梁桥/地震响应分析/双向地震动/OpenSeesKey words
coupling pounding-friction effect/reinforced concrete continuous bridge/seismic response analysis/bi-directional ground motions/OpenSees分类
交通工程引用本文复制引用
林元铮,宗周红,黎雅乐,王李麒..考虑碰撞-摩擦耦合效应的钢筋混凝土连续梁桥地震响应分析[J].东南大学学报（英文版）,2018,34(3):340-348,9.基金项目
The National Natural Science Foundation of China (No.51678141),the Postgraduate Research & Practice Innovation Program of Jiangsu Province (No.KYCX17_0128),the Fundamental Research Funds for the Central Universities. （No.51678141）
