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浙江大学学报(工学版)
浙江大学学报(工学版)  2020, Vol. 54 Issue (6): 1095-1105    DOI: 10.3785/j.issn.1008-973X.2020.06.006
土木工程     
基于非对称模型的碟簧隔震单自由度体系地震响应
王维1,2(),高尚信1,李爱群2,3,*(),王星星1
1. 江苏科技大学 土木工程与建筑学院，江苏 镇江 212000
2. 东南大学 土木工程学院，江苏 南京 210096
3. 北京建筑大学 北京未来城市设计高精尖创新中心，北京 100044
Seismic responses of disc spring isolated-single degree of freedom system based on asymmetric model
Wei WANG1,2(),Shang-xin GAO1,Ai-qun LI2,3,*(),Xing-xing WANG1
1. School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212000, China
2. School of Civil Engineering, Southeast University, Nanjing 210096, China
3. Beijing University of Civil Engineering and Architecture, Beijing Advanced Innovation Center for Future Urban Design, Beijing 100044, China
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摘要：

基于碟簧竖向隔震（DSVI）支座的非对称受力特征，提出非对称恢复力模型，并利用试验结果对该恢复力模型进行验证；基于该非对称恢复力模型，建立碟簧竖向隔震单自由度（DSVI-SDOF）体系的非线性时程分析程序. 在此基础上，对典型DSVI-SDOF体系进行非线性动力时程分析，研究非对称恢复力模型对其地震响应分析结果的影响. 研究结果表明，非对称恢复力模型能够准确表征DSVI支座的力学行为，从而使得非线性时程分析程序能够较为准确地模拟DSVI-SDOF体系的地震响应. 随着地震动峰值加速度的增加，DSVI-SDOF体系的峰值加速度、峰值地震力的隔震率先增大后减小，当地震动峰值加速度为400 cm/s2时，DSVI-SDOF体系的隔震效果达到最优，峰值加速度和峰值地震力的隔震率均在20%~50%.
关键词： 碟簧竖向隔震（DSVI）支座;  非对称恢复力模型;  地震响应;  竖向隔震;  单自由度（SDOF）体系    
Abstract:

An asymmetry restoring force model was proposed based on the asymmetric force characteristics of disc spring vertical isolation (DSVI) bearing, and it was validated by the test results. Then, based on the asymmetric restoring force model, nonlinear time-history analysis program for the disc spring vertical isolation-single degree of freedom (DSVI-SDOF) system was established. Furthermore, the nonlinear dynamic time history analysis of a typical DSVI-SDOF system was carried out to study influence of the asymmetric restoring force model on the structural seismic responses. Results show that the asymmetric model can accurately characterize the mechanical behavior of the DSVI bearing; hence, the seismic responses of the DSVI-SDOF system can be simulated accurately by the nonlinear time-history analysis program. With increase of peak ground acceleration, the isolation ratios of maximum acceleration and maximum seismic force of the DSVI-SDOF system increase first and then decrease. When peak ground acceleration is 400 cm/s2, the isolation effect of the DSVI-SDOF system is optimal, and the isolation ratios of both maximum accelerations and maximum forces are between 20%?50%.
Key words: disc spring vertical isolation (DSVI) bearing    asymmetric restoring force model    seismic responses    vertical isolation    single degree of freedom (SDOF) system
收稿日期: 2019-05-18 出版日期: 2020-07-06
CLC:  TU 352.12  
基金资助: 国家重点研发计划资助项目（2017YFC0703600）；国家自然科学基金资助项目（51708258，51708257）；江苏省高校自然科学基金面上资助项目（17KJB560002）
通讯作者: 李爱群     E-mail: wangweidimias@sina.com;aiqunli@seu.edu.cn
作者简介: 王维（1985—），男，博士，从事结构减隔震研究. orcid.org/0000-0002-6826-0613. E-mail： wangweidimias@sina.com
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引用本文:

王维,高尚信,李爱群,王星星. 基于非对称模型的碟簧隔震单自由度体系地震响应[J]. 浙江大学学报(工学版), 2020, 54(6): 1095-1105.

Wei WANG,Shang-xin GAO,Ai-qun LI,Xing-xing WANG. Seismic responses of disc spring isolated-single degree of freedom system based on asymmetric model. Journal of ZheJiang University (Engineering Science), 2020, 54(6): 1095-1105.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2020.06.006    或    http://www.zjujournals.com/eng/CN/Y2020/V54/I6/1095

图 1  碟簧竖向隔震（DSVI）支座
图 2  黏弹性模型示意图
图 3  双线性模型示意图
图 4  非对称模型示意图
图 5  单片碟簧的尺寸示意图
图 6  荷载作用下模拟值和试验值的比较
图 7  非隔震框架结构及其简化模型
图 8  隔震框架结构及其简化模型
图 9  地震动的加速度反应谱
图 10  碟簧竖向隔震单自由度（DSVI-SDOF）体系峰值位移对比
图 11  DSVI-SDOF体系峰值位移的相对误差
图 12  DSVI-SDOF体系峰值位移的隔震率
图 13  DSVI-SDOF体系峰值加速度对比
图 14  DSVI-SDOF体系峰值加速度的相对误差
图 15  DSVI-SDOF体系峰值加速度的隔震率
图 16  DSVI-SDOF体系峰值力对比
图 17  DSVI-SDOF体系峰值力的相对误差
图 18  DSVI-SDOF体系峰值力的隔震率
图 19  碟簧竖向隔震简化（DSVI-S）支座力-位移滞回曲线对比
图 20  DSVI-S支座消耗能量的分布
图 21  DSVI-S支座消耗能量的相对误差
图 22  DSVI-SDOF体系力时程的对比
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