基于抗拔型三重摩擦摆支座单层网壳的隔震性能分析  

Analysis of Isolation Performance Based on Lattice Shell Structures Used Triple Friction Pendulum Bearing of Anti-drawn Type

作　　者：王秀丽[1] 万敬新[1] 李晓东[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《建筑科学》2013年第9期61-65,共5页Building Science

基　　金：国家创新基金(11C26216206242);国家自然科学基金(51068019)

摘　　要：一般的摩擦摆支座不能竖向抗拔,限制了其在大跨度空间结构中的运用,故本文设计开发了抗拔型三重摩擦摆隔震支座。为研究该支座的隔震性能,将其运用在一跨度为80m的常用单层球面网壳中,进行在大震下的地震响应隔震分析。通过9度罕遇地震时程分析,分析单层球面网壳在考虑隔震支座后的位移及应力响应。与未加隔震支座结果进行对比分析。结果表明,后者的X向位移响应较前者相差约50%,Z向位移近70%,且后者杆件中几乎没有应力产生,说明该隔震支座运用于网壳结构中有良好的水平和竖向隔震性能。The general friction pendulum bearings is not vertical uplift, thus the use of friction pendulum bearing in large span space structure is limited. Therefore, this uplift type triple friction pendulum bearings is designed and developed in the paper. In order to study the isolation performance, the uplift type triple FPS is applied in a single-layer reticulated shell with span of 80m, and the isolation analysis of seismic response under earthquake is conducted. By the analysis of 9 degrees rare earthquake, the displacement and stress response of single-layer reticulated shell used the isolation bearings are analyzed, and the result is compared with the single- layer reticulated shell without isolation bearings. The results show that X displacement response of the latter is about 50% of the former, the Z displacement is close to about 70% and there is almost no stress in the latter bar. In summary, this isolation bearings has good horizontal and vertical isolation performance in reticulated shells.

关 键 词：抗拔型三重FPS 网壳 竖向隔震 

分 类 号：TU352.1[建筑科学—结构工程]