不同预留滑移量下摩擦滑移隔震框架地震反应  

Seismic response of friction sliding isolation frame structure under different reserved slippages

作　　者：展猛 王社良[1] 刘军生[1,2] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]陕西省建筑科学研究院,西安710082

出　　处：《哈尔滨工业大学学报》2016年第6期105-110,共6页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金(51178388);陕西省工业公关项目(2014K06-34);西安建筑科技大学创新团队资助计划

摘　　要：为研究不同预留滑移量下隔震结构的地震反应规律,以软钢实体圆锥棒作为限位消能装置,运用Stateflow逻辑框图模拟隔震层的运动状态,采用Bouc-Wen模型描述弹塑性杆件限位器的滞回特性,建立了摩擦滑移隔震框架结构的MATLAB/Simulink仿真模型,对隔震结构的动力反应和能量反应进行分析,并将纯摩擦动力反应的仿真值与振动台试验结果进行对比.结果表明:纯摩擦动力反应仿真值与试验值基本吻合;随着预留滑移量的增大,上部结构的加速度反应并没有明显增加,但隔震层的滑移量增加,限位器的变形减小;滑移隔震结构的阻尼耗能与预留滑移量关系不大,滑移量的变化主要改变了隔震结构体系的地震输入能量,而对其他能量指标影响较小.To study the seismic response of isolated structure under different reserved slippage, mild steel cone rod was taken as limit and energy dissipation device, Stateflow logic diagram was applied to simulate the motion state of isolation layer, and Bouc-Wen model was used to describe the hysteretic characteristic of elastic-plastic bar limit. MATLAB/ Simulink simulation model of friction sliding isolation frame structure was established, the dynamic and energy response was analyzed, and the dynamic response of pure friction structure was compared with the shaking table test. Results show that the simulation results are consistent with experimental results. With the increase of reserved slippage, the acceleration response of the upper structure is not significantly increased. But isolation layer slippage is increased and limit device deformation is decreased. Damping energy dissipation has little to do with reserved slippage. The slippage change mainly changes earthquake input energy, which has less influence to other energy index.

关 键 词：预留滑移量 限位消能 BOUC-WEN模型 SIMULINK仿真 能量反应 

分 类 号：TU375.4[建筑科学—结构工程]