摆动对带预应力厚层橡胶支座隔震结构地震响应影响研究  

Influence of swing on seismic response of isolated structures with prestressed thick rubber bearings

作　　者：刘旭宏 陈尚鸿[2,3] 祁皑[2,3] 罗才松[1] 周清 Liu Xu-hong;Chen Shang-hong;Qi Ai;Luo Cai-song;Zhou Qing(Fujian Provincial Key Laboratory of Advanced Technology and Informatization in Civil Engineering,Fujian University of Technology,Fuzhou 350118,China;College of Civil Engineering,Fuzhou University,Fuzhou 350116,China;National and Local United Research Center for Seismic and Disaster Informatization of Civil Engineering,Fuzhou University,Fuzhou 350116,China;Urban Planning and Design Institute of Binzhou,Binzhou 256600,China)

机构地区：[1]福建工程学院福建省土木工程新技术与信息化重点实验室,福建福州350118 [2]福州大学土木工程学院,福建福州350116 [3]福州大学土木工程防震减灾信息化国家地方联合工程研究中心,福建福州350116 [4]滨州市规划设计研究院,山东滨州256600

出　　处：《工程抗震与加固改造》2022年第5期106-112,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：装配式混凝土建筑绿色建造关键技术与产业化示范应用研究(2019HZ07011);国家自然科学基金资助项目(51878181)。

摘　　要：厚层橡胶支座(TRB)相比于普通叠层橡胶隔震支座(RB)具有较小的竖向刚度,其竖向隔震能力有所提高。但TRB竖向刚度小,在地震作用下,上部结构摆动效应增加。针对TRB的不足,结合预应力原理,提出一种新型的隔震装置,即预应力厚层橡胶隔震支座(PRB)。在已有试验的基础上,建立其隔震结构非线性分析模型,通过时程反应分析,研究了其对隔震结构摆动的控制。研究结果表明,PRB相比TRB对隔震结构的摆动转角具有良好的限制功能,地震强度越大,其限制功能越好。Compared with the conventional laminated rubber bearing, the thick rubber bearing has smaller vertical stiffness, and its vertical isolation capacity is improved. However, the vertical stiffness of TRB is small, and the swing effect of superstructure increases under earthquake action. To overcome the shortcomings of TRB, a new type of isolation device, namely the prestressed thick rubber isolation bearing(PRB), is proposed. On the basis of the existing tests, the nonlinear analysis model of the isolated structure is established, and the control of the swing of the isolated structure is studied. The results show that PRB has a better control than TRB on the swing angle of the isolated structure, and the greater the earthquake intensity is, the better the control is.

关 键 词：厚层橡胶支座 竖向刚度 摆动效应 隔震结构 

分 类 号：TU352.12[建筑科学—结构工程]