可液化场地减震结构体系地震动特性影响效应研究  

Study on the Influence of Ground Motion Characteristics on Structure System with Viscous Damper in Liquefiable Field

作　　者：唐亮[1,2] 司盼 凌贤长 邢东亮[4] 刘正滨 黄腾 TANG Liang;SI Pan;LING Xianzhang;XING Dongliang;LIU Zhengbin;HUANG Teng(School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Heilongjiang Research Center for Rail Transit Engineering in Cold Regions,Harbin 150090,China;School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China;Shandong Port Group Qingdao Port,Qingdao 266005,China;Shandong Port Group Co.,Ltd.,Qingdao 266000,China;CRCC Harbor and Channel Engineering Bureau Group Co.,Ltd.,Zhuhai 519070,China)

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [2]黑龙江省寒区轨道交通工程技术研究中心,黑龙江哈尔滨150090 [3]青岛理工大学土木工程学院,山东青岛2660333 [4]山东港口青岛港集团有限公司,山东青岛266005 [5]山东省港口集团有限公司,山东青岛266000 [6]中国铁建港航局集团有限公司,广东珠海519070

出　　处：《防灾减灾工程学报》2023年第3期508-517,共10页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家重点研发计划项目(2016YFE0205100);国家自然科学基金项目(51578195,51608533);黑龙江省应用技术研究与开发计划项目(GA19A501)资助。

摘　　要：工程结构的地震响应规律与地震动特性紧密相关。为了研究地震动特性对可液化场地装设黏滞阻尼器的桩基-结构体系地震响应和黏滞阻尼器减震效果的影响,选取24条不同特性的地震动作为输入,针对可液化场地装设黏滞阻尼器的桩基-结构体系数值模型进行非线性时程分析。结果表明:相比于远场地震动作用和近场非脉冲地震动作用,近场脉冲地震动作用下,液化场地减震结构体系具有更大的地震响应;近场脉冲地震动作用下,速度型黏滞阻尼器的减震效果得到了充分发挥;相同振幅下,地震动峰值速度(PGV)与液化场地减震结构体系地震响应的相关性最为显著,可作为评价液化场地减震结构体系地震响应的主要指标。研究结果对液化场地黏滞阻尼器的减震设计具有一定的借鉴意义。The seismic response law of engineering structures is closely related to the characteristics of ground motion.To examine the influence of ground motion characteristics on the seismic response and damping effect of the pile foundation-structure system with a viscous damper in the liquefiable field,24 ground motions with different characteristics were selected.Nonlinear time history analyses were carried out on the numerical model of the pile foundation-structure system with a viscous damper in the liquefiable field.The results show that the seismic response of the structure under near-field pulsed ground motion is larger than that under far-field ground motion and near-field non-pulsed ground motion.Under the action of near-field pulsed ground motion,the damping effect of the velocity-type viscous damper is fully exerted.Given the same amplitude,the peak ground motion velocity has the most significant correlation with the seismic response of damping structures in liquefiable fields,which can be used as the main evaluation index for seismic response of damping structures in liquefiable fields.The research results have important theoretical and practical significance for the damping design of viscous dampers in liquefiable fields.

关 键 词：液化场地 黏滞阻尼器 地震动特性 地震响应 相关性 

分 类 号：TU473[建筑科学—结构工程]