三峡大学学报（自然科学版）2026，Vol.48Issue(2)：71-78,8.DOI:10.13393/j.cnki.issn.1672-948X.2026.02.010
基于地震易损性的双柱薄壁墩连续刚构桥的抗震性能分析
Seismic Performance Analysis of Continuous Rigid-Frame Bridges with Twin-Column Thin-Walled Piers Based on Seismic Vulnerability
摘要
Abstract
The seismic performance of continuous rigid-frame bridges is significantly influenced by the stiffness of twin-column thin-walled piers.In this study,a finite element model of a continuous rigid-frame bridge featuring twin-column thin-walled piers was initially developed by OpenSees.Based on the existing quasi-static test results of twin-column thin-walled piers,the hysteresis curve and skeleton curve obtained from the test and finite element were compared to verify the accuracy of the finite element model.Then,the damage indexes of bridge piers were defined and quantified through section performance analysis according to the concept of ductile seismic design,and a seismic vulnerability model for the main bridge of a twin-column thin-walled pier rigid frame bridge was established.Finally,the effects of wall thickness,column spacing,pier height on the seismic performance of continuous rigid frame bridges were evaluated based on the seismic vulnerability analysis method.The results indicate that an increase in the spacing between twin columns and the wall thickness of individual columns can enhance the seismic performance of the bridge to some extent.However,this improvement effect is limited,and the optimal ratio of the spacing between twin-columns to the wall thickness of individual columns varies at different pier heights.For piers not exceeding 90 meters in height,to achieve optimal seismic performance while maintaining material economy,a ratio of 10.5 for the spacing between twin-columns to the wall thickness of individual columns is recommended.关键词
连续刚构桥/双柱薄壁墩/单柱壁厚/双柱间距/墩高/地震易损性/抗震性能Key words
continuous rigid-frame bridges/twin-column thin-walled pier/wall thickness/column spacing/pier height/seismic vulnerability/seismic performance分类
交通工程引用本文复制引用
王海龙,陈琛,黄树强,丁瑜..基于地震易损性的双柱薄壁墩连续刚构桥的抗震性能分析[J].三峡大学学报（自然科学版）,2026,48(2):71-78,8.基金项目
湖南省自然科学基金青年基金项目(2024JJ6429) （2024JJ6429）
湖南省教育厅科研一般项目(23C0061) （23C0061）
湖南省教育厅优秀青年项目(25B0159) （25B0159）
