[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):162-167.[doi:10.3969/j.issn.1001-0505.2014.01.029]
 Li Chong,Wang Kehai,Li Yue,et al.Experimental study on seismic performance of laminated rubber bearings with friction slipping[J].Journal of Southeast University (Natural Science Edition),2014,44(1):162-167.[doi:10.3969/j.issn.1001-0505.2014.01.029]
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板式橡胶支座摩擦滑移抗震性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
162-167
栏目:
交通运输工程
出版日期:
2014-01-18

文章信息/Info

Title:
Experimental study on seismic performance of laminated rubber bearings with friction slipping
作者:
李冲1王克海2李悦2李茜2
1东南大学交通学院, 南京210096; 2交通运输部公路科学研究院, 北京100088
Author(s):
Li Chong1 Wang Kehai2 Li Yue2 Li Qian2
1School of Transportation, Southeast University, Nanjing 210096, China
2 Research Institute of Highway of Ministry of Communications, Beijing 100088, China
关键词:
板式橡胶支座 摩擦滑移 滑移位移 耗能 剪切变形
Keywords:
laminated rubber bearing friction slipping slipping displacement energy dissipation shear deformation
分类号:
U442.5
DOI:
10.3969/j.issn.1001-0505.2014.01.029
摘要:
为了研究板式橡胶支座摩擦滑移后桥梁的抗震性能,完成了5个试件在不同竖向荷载作用和往复荷载作用下的拟静力试验,分析了支座摩擦滑移前后的滞回曲线、骨架曲线、支座变形、滑移位移、强度和刚度退化规律以及耗能能力等抗震性能指标.试验结果表明,加载位移较小时,支座主要发生弹性剪切变形,滑动位移较小.当支座剪切变形达到73%~110%时,发生明显滑移,滑移位移与支座所受的竖向荷载和支座规格有关.支座与钢板之间的摩擦系数与施加竖向荷载成反比,摩擦力与竖向荷载成正比,支座加载和卸载刚度基本不变,等效刚度退化明显,但退化到一定值后基本稳定.板式橡胶支座橡胶层厚度的增加会导致支座摩擦耗能性能改变,加载位移相同时,支座自身的剪切变形随之增大,摩擦滑移位移和摩擦耗能则随之减小.
Abstract:
To investigate the seismic behaviors of the laminated rubber bearing with friction slipping, a series of experiments of five specimens subjected to pseudo-static tests under different vertical loads and reciprocating loads were conducted. The force-displacement hysteretic curve, skeleton curve, deformation, slipping displacement, degradation of strength and stiffness, and the energy dissipation capacity before and after friction slipping were analyzed. The experimental results show that when the load displacement is small, the elastic shear deformation of bearings is predominant and the slipping displacement is small. When the bearing shear deformation reaches 73% to 110%, slipping displacement is obvious and it is related to the vertical load and the type of bearings. The friction coefficient between the bearing and the steel plate is inversely proportional to the applied vertical load, while the friction force is proportional to the vertical load. The uploading and unloading of bearing are essentially unchanged. The bearing equivalent stiffness degradation is obvious; but after the degradation reaches a certain value, the equivalent stiffness is prone to stability. The increase of the rubber layer thickness can change friction energy dissipation. When the loading displacement is equivalent, shear deformation increases while friction slipping displacement and friction energy consumption decrease.

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备注/Memo

备注/Memo:
收稿日期: 2013-05-19.
作者简介: 李冲(1985—),男,博士生; 王克海(联系人),男,博士,研究员,博士生导师,kh.wang@rioh.cn.
基金项目: 科技部国际科技合作计划资助项目(2009DFA82480)、交通运输部西部交通建设科技资助项目(2009318223094)、交通运输部公路工程行业标准资助项目(JTG-C-201012).
引用本文: 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):162-167. [doi:10.3969/j.issn.1001-0505.2014.01.029]
更新日期/Last Update: 2014-01-20