[1]周通,李爱群.铅芯橡胶支座单元模型的开发及验证[J].东南大学学报(自然科学版),2017,47(6):1154-1160.[doi:10.3969/j.issn.1001-0505.2017.06.012]
 Zhou Tong,Li Aiqun.Development and verification of element model for lead-rubber bearings[J].Journal of Southeast University (Natural Science Edition),2017,47(6):1154-1160.[doi:10.3969/j.issn.1001-0505.2017.06.012]
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铅芯橡胶支座单元模型的开发及验证()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第6期
页码:
1154-1160
栏目:
土木工程
出版日期:
2017-11-20

文章信息/Info

Title:
Development and verification of element model for lead-rubber bearings
作者:
周通1李爱群123
1东南大学土木工程学院, 南京 210096; 2北京未来城市设计高精尖创新中心, 北京 100044; 3北京建筑大学土木与交通工程学院, 北京 100044
Author(s):
Zhou Tong1 Li Aiqun123
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Beijing Advanced Innovation Center for Future Urban Design, Beijing 100044, China
3School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
关键词:
铅芯橡胶支座 水平双向耦合 竖向压缩刚度 验证
Keywords:
lead-rubber bearings horizontal bidirectional coupling vertical compression stiffness verification
分类号:
TU352.1
DOI:
10.3969/j.issn.1001-0505.2017.06.012
摘要:
为了提高铅芯橡胶支座力学性能计算分析的准确性和效率,基于OpenSees有限元程序开发了相应的单元模型,综合考虑了支座双向耦合行为和圆形截面各向同性的特点,并计入压缩刚度、临界承载力随侧移的变化效应以及加载历程对于支座拉伸方向累积损伤、强度退化等性能的影响.为验证单元模型的有效性,分别针对水平双向位移控制试验、静力循环拉伸试验及隔震桥梁动力试验进行了模拟分析.结果表明,所提模型能够较为合理地模拟支座的力学特性,在单元内部考虑支座力学性能的变化效应可以较为准确地反映其在地震动作用下的响应表现,为进一步开展隔震结构地震响应分析奠定基础.
Abstract:
To improve the accuracy and the efficiency of mechanical property calculations and analyses of lead-rubber bearings, the corresponding element model is proposed based on the OpenSees program. This model accounts for the coupled bidirectional response and the isotropic behavior of circular bearings. Furthermore, the variation of the compression stiffness and the critical load with the change of lateral displacement and the effects of the loading history on the cumulative damage and cavitation strength reduction in the tensile direction of bearings are considered. To validate the effectiveness of this element model, simulation analyses are conducted for the bi-directional displacement-controlled tests, the cyclic tensile load tests and the steel-truss isolated bridge dynamic tests, respectively. The results show that this numerical model can reasonably simulate the mechanical behaviors of bearings. The response performance of the bearings under earthquake ground motions can be described accurately by considering the variation of the bearings’ mechanical characteristics. The proposed model provides a foundation for further investigation of the response analyses on seismic isolated structures.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2017-03-07.
作者简介: 周通(1993—),男,硕士生;李爱群(联系人),男,博士,教授,博士生导师,aiqunli@seu.edu.cn.
基金项目: 国家自然科学基金重点资助项目(51438002)、国家自然科学基金资助项目(51278104).
引用本文: 周通,李爱群.铅芯橡胶支座单元模型的开发及验证[J].东南大学学报(自然科学版),2017,47(6):1154-1160. DOI:10.3969/j.issn.1001-0505.2017.06.012.
更新日期/Last Update: 2017-11-20