哈尔滨工程大学学报2025，Vol.46Issue(10)：1994-2002,9.DOI:10.11990/jheu.202311005
基于双墩协同受载的连续梁桥地震响应研究
Seismic response of continuous bridges based on the co-loading of double piers
摘要
Abstract
In existing continuous girder bridges,only one fixed pier is usually set to bear the horizontal forces of the structure.The seismic capacity of this single-pier loading mode often fails to satisfy the prerequisites under strong earthquakes.This study proposes a new type of self-centering friction rope device(Sc-FRD)to address this con-cern..The device was placed at the top of the movable pier,and the movable pier and the fixed pier were allowed to form a two-pier cooperative loading structure for improving the overall seismic performance of the continuous gird-er bridge.A 1∶30 scaled-down model of the continuous girder bridge was designed and fabricated to verify the ef-fectiveness of the Sc-FRD.Through the shaking-table loading test,the seismic responses of the traditional continu-ous girder bridge with a single fixed pier and the two-pier cooperative loading continuous girder bridge applying Sc-FRD were investigated comparatively.The results show that the two-pier cooperative loading structure can signifi-cantly reduce the seismic response of the fixed pier,enabling it to remain elastic under strong earthquakes.The Sc-FRD can efficiently limit the displacement of the main girder,presenting excellent shock-absorption performance and a self-centering effect.关键词
连续梁桥/减隔震支座/振动台试验/双墩协同受载/自复位/自复位摩擦索装置/地震响应/缩尺模型Key words
continuous bridge/seismic isolation bearing/shaking table test/co-loading structure of double piers/self-centering/self-centering friction rope device/seismic response/scaled model分类
交通运输引用本文复制引用
吴晨阳,汪志斌,张文学..基于双墩协同受载的连续梁桥地震响应研究[J].哈尔滨工程大学学报,2025,46(10):1994-2002,9.基金项目
国家自然科学基金项目(51778022) （51778022）
北京自然科学基金项目(8172008). （8172008）
