新型隔震支座在网壳结构振动控制中的应用研究  

Application of a new type of seismic isolation bearing in vibration control of lattice shell structures

作　　者：庄鹏[1] 李彬双[1] 薛素铎[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《空间结构》2006年第3期18-23,共6页Spatial Structures

基　　金：北京市自然科学基金资助项目(8042008);北京市教委科技发展计划项目(Km200310005021)

摘　　要：将形状记忆合金(SM A)与普通叠层橡胶垫复合可以形成一种新型SM A-橡胶隔震支座.本文阐明了SM A-橡胶支座的工作机理,并建立了支座的理论模型.将设计的新型支座应用于空间网壳结构地震的被动控制,推导了支座隔震空间网壳结构的振动方程.最后,通过某双层柱面网壳结构地震响应的数值模拟考察了SM A-橡胶支座对网壳结构的减振效果.研究结果表明,新型SM A-橡胶支座较普通橡胶支座具有更好的隔震性能,可有效应用于网壳结构的振动控制.A new type of SMA-rubber bearing is developed by incorporating shape memory alloy （SMA） wires with laminated rubber pad. First, the working mechanism of such a new device is outlined in this paper and the isolator＇s mechanical model is established. Then, the new one is applied to passive control of lattice shell structures. Vibration equations of seismically isolated lattice shells are derived herein. Finally, earthquake responses of a double-layer cylindrical lattice shell are simulated to examine the effectiveness of the SMA-rubber bearing in vibration reduction of the lattice shell. The results show that this new type of SMA-rubber bearing is superior to the laminated rubber bearing in seismic isolation performances and is very effective in vibration control of lattice shell structures.

关 键 词：SMA-橡胶支座 网壳结构 隔震 振动控制 

分 类 号：TU311.3[建筑科学—结构工程]