[1]李枝军,葛飞,徐秀丽,等.板式橡胶支座性能有限元模拟与试验研究[J].东南大学学报(自然科学版),2013,43(6):1299-1304.[doi:10.3969/j.issn.1001-0505.2013.06.031]
 Li Zhijun,Ge Fei,Xu Xiuli,et al.Finite element simulation and experimental study of property for elastomeric pad bearing[J].Journal of Southeast University (Natural Science Edition),2013,43(6):1299-1304.[doi:10.3969/j.issn.1001-0505.2013.06.031]
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板式橡胶支座性能有限元模拟与试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第6期
页码:
1299-1304
栏目:
交通运输工程
出版日期:
2013-11-20

文章信息/Info

Title:
Finite element simulation and experimental study of property for elastomeric pad bearing
作者:
李枝军葛飞徐秀丽王凯睿
南京工业大学土木工程学院, 南京 210009
Author(s):
Li Zhijun Ge Fei Xu Xiuli Wang Kairui
College of Civil Engineering, Nanjing University of Technology, Nanjing 210009, China
关键词:
板式橡胶支座 支座性能测试 支座滑动 剪切刚度 摩擦系数
Keywords:
elastomeric pad bearing(EPB) bearing property test bearing sliding shear stiffness friction coefficient
分类号:
U442.5
DOI:
10.3969/j.issn.1001-0505.2013.06.031
摘要:
为了研究板式橡胶支座的滑动特性,实测了板式橡胶支座与混凝土间的摩擦系数及其侧向剪切刚度,研究了竖向荷载和加载速率对摩擦系数的影响.试验结果表明:支座的摩擦系数随竖向荷载和加载速率的增大而减小,且实测值大于《公路桥梁抗震设计细则》中的规定值;板式橡胶支座开始滑动时的剪切变形一般相当于橡胶层的厚度,因此可将此指标作为判断板式橡胶支座是否滑动的参考标准.其次,通过建立支座的精细化有限元模型,较好地模拟了支座上下表面的摩擦作用以及由于墩柱大变形产生的支座不均匀受压甚至卡压现象,为准确分析板式橡胶支座桥梁的抗滑性能提供了保证.
Abstract:
In order to study the sliding characteristics of the elastomeric pad bearing(EPB), an experiment was carried out to obtain the friction coefficient between the EPB and the concrete and the lateral shear stiffness of the EPB. The effect in the vertical load and the loading velocity on the friction coefficient was investigated. The experimental results show that with the increase in the vertical load and the loading velocity, the friction coefficient decreases, and the friction coefficient obtained by the experiment is greater than that presented in Guidelines for Seismic Design of Highway Bridges. The slide of the EPB occurs as its deformation reaches the depth of rubber, which can be used as a reference standard of the EPB sliding. Moreover, a refined finite element model is built to simulate the EPB sliding and non-uniformed compression due to the large deformation of piers, which ensures the accurate analysis of the sliding performance of bridges with the EPB.

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相似文献/References:

[1]李冲,王克海,李悦,等.板式橡胶支座摩擦滑移抗震性能试验研究[J].东南大学学报(自然科学版),2014,44(1):162.[doi:10.3969/j.issn.1001-0505.2014.01.029]
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[2]向需文,王浩,李爱群,等.考虑PGA和PGV比值影响的板式橡胶支座连续梁桥减震控制[J].东南大学学报(自然科学版),2017,47(5):1006.[doi:10.3969/j.issn.1001-0505.2017.05.026]
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备注/Memo

备注/Memo:
作者简介: 李枝军(1978—),男,博士, 讲师, lizhijun@njut.edu.cn.
基金项目: 国家自然科学基金资助项目(51178220)、江苏省交通科学研究计划资助项目(08Y41).
引文格式: 李枝军,葛飞,徐秀丽,等.板式橡胶支座性能有限元模拟与试验研究[J].东南大学学报:自然科学版,2013,43(6):1299-1304. [doi:10.3969/j.issn.1001-0505.2013.06.031]
更新日期/Last Update: 2013-11-20