考虑上下盘效应的带限位装置的滑移隔震结构隔震性能研究  

Study on Isolation Performance of Sliding Isolation Structure with Displacement-limited Device Considering Hanging Wall/Footwall Effects

作　　者：张超[1] 张慧[1] 程兴旺 ZHANG Chao;ZHANG Hui;CHENG Xingwang(Shaanxi Polytechnic Institute,Xianyang 712000,China)

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000

出　　处：《粉煤灰综合利用》2022年第3期6-11,17,共7页Fly Ash Comprehensive Utilization

基　　金：陕西省教育厅专项基金(12JK0895)。

摘　　要：建立带限位装置的滑移隔震结构和传统抗震结构的计算模型,输入上盘地震动和下盘地震动,对比分析上下盘地震动作用下两类结构的动力响应分布规律。分析结果表明:对于带限位装置的滑移隔震结构,下盘地震动TCU 110作用下楼层加速度、层间位移及层间剪力均大于上盘地震动TCU 078作用下对应楼层的加速度、层间位移及层间剪力;带限位装置的滑移隔震结构在上盘地震动TCU 078作用下楼层加速度和层间剪力的隔震率均大于下盘地震动TCU 110作用下对应楼层的加速度和层间剪力的隔震率;在两种地震动作用下,随着地震烈度的增加,带限位装置的滑移隔震结构各楼层加速度和层间剪力的隔震率基本都在增大,而各楼层层间位移的降低率在减小。因此,不能忽视上下盘地震动对带限位装置的滑移隔震结构的影响,从而确保结构设计安全。Calculation model of sliding isolation structure with displacement limit device and conventional seismic structure are established respectively,the hanging wall ground motion and the footwall ground motion were input,the dynamic response distribution of the two types of structures under the action of ground motion of hanging wall and footwall were analyzed.Analysis results show that floor acceleration,interlayer displacement and interlayer shearing force under the action of footwall ground motion TCU 110 are greater than those under the action of hanging wall ground motion TCU 078 for the sliding isolation structure with displacement limit device,the isolation rates of floor acceleration and interlayer shearing force of sliding isolation structure with displacement limit device under the action of hanging wall ground motion TCU 078 are greater than those of corresponding floor acceleration and interlayer shearing force under the action of footwall ground motion TCU 110,with the increase of seismic intensity under the action of two kinds of ground motions,the isolation rate of acceleration and interlayer shearing force of sliding isolation structure with displacement limit device increases basically,while the reduction rate of interlayer displacement decreases.Therefore,the impact of ground motion of hanging wall and footwall on sliding isolation structure with displacement limit device cannot be ignored,so as to ensure the safety of structure design.

关 键 词：滑移隔震 限位装置 上下盘地震动 隔震性能 

分 类 号：TU352.1[建筑科学—结构工程]