删除或更新信息,请邮件至freekaoyan#163.com(#换成@)

拉索限位装置对跨断层桥梁地震响应的影响

本站小编 Free考研考试/2022-02-13

DOI: 10.11908/j.issn.0253-374x.20045

作者:

作者单位: 同济大学 土木工程防灾国家重点实验室,上海 200092


作者简介: 谷屹童(1993—),男,博士生,主要研究方向为桥梁抗震。 E-mail: guyitong@tongji.edu.cn


通讯作者: 袁万城(1962—),男,教授,博士生导师,工学博士,主要研究方向为桥梁抗震。E-mail: yuan@tongji.edu.cn

中图分类号: U441+.3


基金项目: 土木工程防灾国家重点实验室基金(SLDRCE19-B-19);国家自然科学基金(51978512,51778471);山东省交通运输科技计划(2017B75)




Effect of Cable Restrainers on Seismic Response of Cross-fault Bridges
Author:

Affiliation: State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China


Fund Project:




摘要
| 图/表
| 访问统计
| 参考文献
|相似文献
| 引证文献
| 资源附件

摘要:以一座三跨连续梁桥为工程背景,选择典型的近断层脉冲地震动,应用非一致激励的非线性时程分析方法,对考虑滑冲效应的跨断层桥梁地震响应进行计算,研究不同断层位置的情况下拉索限位器对跨断层桥梁地震响应的影响,并对拉索限位器的自由程和限位刚度进行参数分析。结果表明:应用拉索限位器可以有效地减小跨断层桥梁的位移响应,同时桥墩的受力会有所增加;跨断层桥梁的地震响应对限位器自由程的变化更加敏感。



Abstract:In this paper,the seismic response of a three-span fault-crossing continuous girder bridge subjected to near-fault pulse-like seismic ground motions is calculated considering the fling-step effect. Typical near-fault pulse-like ground motion records are selected and nonlinear response history analyses are adopted in an asynchronous excitation scenario. The effect of cable restrainers on the seismic response of fault-crossing bridges is investigated under different fault locations. In addition, parametric analyses on lateral restraining displacement and lateral stiffness of the cable restrainer are conducted. Results show that using the cable restrainer can effectively mitigate the displacement response of fault-crossing bridges while it enlarges the pier-bottom moment; seismic responses of a fault-crossing bridge are more sensitive to changes in the lateral restraining displacements of the cable restrainer.





PDF全文下载地址:

点我下载PDF
相关话题/桥梁 地震 土木工程 文献 实验室