东南大学学报（自然科学版）Issue(1)：162-167,6.DOI:10.3969/j.issn.1001-0505.2014.01.029
板式橡胶支座摩擦滑移抗震性能试验研究
Experimental study on seismic performance of laminated rubber bearings with friction slipping
摘要
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 slip-ping displacement is small.When the bearing shear deformation reaches 73%to 1 10%,slipping dis-placement is obvious and it is related to the vertical load and the type of bearings.The friction coef-ficient 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 deg-radation reaches a certain value,the equivalent stiffness is prone to stability.The increase of the rub-ber layer thickness can change friction energy dissipation.When the loading displacement is equiva-lent,shear deformation increases while friction slipping displacement and friction energy consump-tion decrease.关键词
板式橡胶支座/摩擦滑移/滑移位移/耗能/剪切变形Key words
laminated rubber bearing/friction slipping/slipping displacement/energy dissipation/shear deformation分类
交通工程引用本文复制引用
李冲,王克海,李悦,李茜..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,(1):162-167,6.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）． （）
