多层桥梁结构合理抗震体系研究  

Research on rational seismic resistance system of multilayer bridge structure

作　　者：张玥[1] 薛磊 周敉[2] ZHANG Yue;XUE Lei;ZHOU Mi(School of Architecture and Civil Engineering,Xi′an University of Science and Technology,Xi′an 710054,China;Key Laboratory for Bridge and Tunnel Engineering of Shaanxi,Chang′an University,Xi′an 710054,China)

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054 [2]长安大学桥梁与隧道陕西省重点实验室,陕西西安710054

出　　处：《地震工程与工程振动》2020年第6期103-110,共8页Earthquake Engineering and Engineering Dynamics

基　　金：长安大学中央高校基本科研业务费专项资助项目(300102210513);陕西省创新人才推进计划-科技创新团队(2018-TD-040)。

摘　　要：为研究采用不同抗震体系时多层桥梁结构的抗震性能,以一城市多层桥梁结构为工程背景,基于CSiBridge软件建立桥梁模型,比较采用传统抗震体系、减隔震体系和延性体系时结构的抗震性能。结果表明:两种抗震体系均可满足两级抗震设防水准的性能要求,采用延性抗震体系时,结构的内力较传统抗震体系减小15%~30%,但墩顶位移大于采用传统抗震体系的位移;采用减隔震体系时,结构的内力较传统抗震体系减小45%~60%,墩顶位移明显小于采用传统抗震体系时的位移。总体来看,减隔震体系的抗震性能优于延性抗震体系。In order to study the seismic performance of multilayer bridge structures with different seismic systems,based on the CSiBridge software,a bridge model was built based on the engineering background of a multilayer bridge structure in a city,and the seismic performance of the structure was compared with that of the traditional seismic system,the shock-reduction and isolation system and the ductility system.The results show that:both of the two seismic systems can meet the performance requirements of the two-level seismic fortification level.When the ductile seismic system is adopted,the internal force of the structure is reduced by 15%~30%compared with the traditional seismic system,but the displacement of the pier top is larger than that of the traditional seismic system.When the seismic isolation system is adopted,the internal force of the structure is reduced by 45%~60%compared with the traditional seismic system,and the displacement of the pier top is obviously less than that of the traditional seismic system.In general,the seismic performance of the seismic isolation system is better than that of the ductile seismic system.

关 键 词：多层桥梁 抗震体系 减隔震 延性抗震 墩顶位移 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]