导轨式抗拉橡胶支座力学性能研究  

Mechanical properties of rail-type anti-tensile rubber bearings

作　　者：张龙飞[1] 陶忠 潘文[1] 张战书 兰香[1] 曾传旺 ZHANG Longfei;TAO Zhong;PAN Wen;ZHANG Zhanshu;LAN Xiang;ZENG Chuanwang(Faculty of Civil Engineering ＆ Architecture,Kunming University of Science and Technology,Kunming 650500,China;Faculty of Public Security and Emergency Management,Kunming University of Science and Technology,Kunming 650093,China;Kunming NEW ZhengDongYang Architecture Design,Kunming 650000,China;Yunan Quakesafe Seismic Isolation Technologies Co.,Ltd,Kunming 650217,China)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500 [2]昆明理工大学公共安全与应急管理学院,昆明650093 [3]昆明新正东阳建筑工程设计有限公司,昆明650000 [4]云南震安减震科技股份有限公司,昆明650217

出　　处：《振动与冲击》2018年第22期122-127,150,共7页Journal of Vibration and Shock

基　　金：国家科技支撑计划(2013BAK13B01);国家自然科学基金(51168024)

摘　　要：针对传统隔震橡胶支座在抗拉性能方面存在的不足,设计了一种为橡胶支座提供附加抗拉刚度导轨式抗拉装置(RTD),提出了可用于大高宽比高层建筑结构的新型导轨式隔震橡胶支座。借助拟静力试验,研究了天然橡胶支座LNR600和导轨式隔震橡胶支座RTD&LNR600的水平压剪和竖向抗拉力学性能;基于ABAQUS分析平台,研究了单RTD竖向抗拉力学性能本构关系,并分析了RTD&LNR600水平压剪和拉剪状态下的水平力学性能。研究结果表明:压剪状态下导轨式隔震橡胶支座RTD&LNR600的等效水平刚度较天然橡胶支座LNR600略有提高,但不超过4%;RTD&LNR600的竖向拉力-位移关系呈双线性关系,抗拉承载力远大于天然橡胶支座LNR600; RTD的抗拉性能不受偏心状态影响,力学行为可用双线性模型来进行描述;导轨式隔震橡胶支座RTD&LNR600在拉剪状态下水平性能稳定,其拉力相关性不明显。In view of the shortcomings of traditional isolation rubber bearings in tensile performance, a rail-type anti-tensile device（RTD） was designed to provide rubber bearings with additional tensile stiffness, and a new kind of tensile rubber bearings was proposed which can be used in high-rise buildings with large aspect ratio. By pseudo-static tests, the horizontal compression-shear and vertical tensile behaviors of the natural rubber bearing LNR600 and the rail-type rubber bearing RTD＆LNR600 were studied. Based on the ABAQUS analysis platform, the vertical tensile constitutive relation of the RTD and the horizontal mechanical properties of the RTD＆LNR600 were studied in the states of compression-shear and tension-shear. The results show that： in compression-shear state, the equivalent horizontal stiffness of RTD＆LNR600 is slightly greater than that of LNR600,but not more than 4%. The vertical tensile constitutive relation of RTD＆LNR600 is bilinear,and the tensile bearing capacity is greatly improved. The tensile properties of RTD are not affected by the eccentric state. It is shown the mechanical behaviors of RTD can be described by the bilinear model. The horizontal performance of RTD＆LNR600 is stable in tension-shear state, and its correlation with tension is not obvious.

关 键 词：橡胶隔震 抗拉橡胶支座 导轨式抗拉装置 试验研究 有限元分析 

分 类 号：TU352.12[建筑科学—结构工程] TU317