塔型隔震结构多质点体系计算模型及振动台试验研究  

COMPUTATION MODEL AND SHAKING TABLE TEST FOR ISOLATED MDOF TOWER STRUCTURE

作　　者：刘文光[1] 闫维明[2] 霍达[2] 周福霖[1] 三山刚史 冯德民 增田圭司 

机构地区：[1]广州大学 [2]北京工业大学 [3]日本藤田技术中心

出　　处：《土木工程学报》2003年第5期64-70,共7页China Civil Engineering Journal

基　　金：北京市自然科学基金资助(8992003)

摘　　要：本文提出了考虑橡胶隔震支座剪切变形状态下竖向刚度特性的转动刚度计算式,并应用到大高宽比塔型隔震结构体系多质点体系计算模型分析隔震结构的地震反应。本研究同时还完成了5层塔型钢结构隔震模型结构的振动台试验,模型结构加速度反应、层间剪力和隔震层恢复力特性等试验结果与采用多质点体系计算模型解析结果一致,表明多质点体系计算模型可以有效地用于分析塔型隔震结构地震反应。The computation model and shaking table test for an isolated MDOF tower structure are studied. A formula for the rotation stiffness of MDOF model is proposed in the paper. It is considered with the offset vertical stiffness of bearing isolation in analyzing the earthquake response for the isolated tower structure. At same time, a shaking table test is performed on a 5-story steel model in order to grasp the behaviors of the isolated tower structure under earthquake. It is found that the computing is in agreement with that of the test.

关 键 词：隔震结构 隔震支座 竖向刚度 转动刚度 地震反应 振动台 

分 类 号：TU352.12[建筑科学—结构工程]