串联隔震体系的大变形力学行为分析与试验  

Analysis of large deformation behavior of series isolation system and its experimental verification

作　　者：杜永峰[1,2] 朱前坤[1] 李慧[2] 

机构地区：[1]兰州理工大学防震减灾研究所,兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,兰州730050

出　　处：《振动与冲击》2011年第11期236-239,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金(50778087);甘肃省科技支撑计划(090-GKCA040)

摘　　要：研究了由叠层橡胶隔震支座和地下室悬臂柱组成的串联隔震体系的大变形行为。考虑轴向伸长、一阶剪切变形,建立了串联隔震体系大变形分析的几何非线性控制方程,并利用微分求积单元法进行了数值求解。结果表明,串联隔震体系大变形主要出现在叠层橡胶隔震支座处,地下室悬臂柱各处内力值呈近似均匀分布,计算结果与试验结果规律吻合。The large deformation behavior of series isolation system in which the rubber bearing is connected with the basement column was studied.The geometric nonlinear equations were obtained in accordance with the Timoshenko beams model,based on the axial elongation and first-order shear deformation theory.Then the large deformation behaviors of series isolation system were analyzed by using differential quadrature element method.The results show that the large deformation of series isolation system mainly occurs in the rubber bearings,while the internal force on the column maintains approximately evenly distributed.The theoretical results are consistent with those of the test.

关 键 词：串联隔震体系 大变形 微分求积单元法 

分 类 号：TU352.1[建筑科学—结构工程]