设有新型耗能支撑的双层球面网壳减震分析  

Seismic control analysis of double-layer spherical lattice shell structure with innovative energy dissipation braces

作　　者：庄鹏 何骁[1] 韩淼 薛素铎 

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学北京未来城市设计高精尖创新中心,北京100044 [3]北京建筑大学工程结构与新材料北京高等学校工程研究中心,北京100044 [4]北京工业大学建筑工程学院,北京100124

出　　处：《广西大学学报（自然科学版）》2018年第1期149-159,共11页Journal of Guangxi University（Natural Science Edition）

基　　金：北京市教育委员会科技计划面上项目(KM201510016004);北京市自然科学基金资助项目(8132024)

摘　　要：为改进现有摩擦阻尼器的减震性能,将大尺寸形状记忆合金弹簧(Shape Memory Alloy spring,SMA spring)和摩擦装置复合使用,提出了一种形状记忆合金弹簧—摩擦复合阻尼器(SMA spring-Friction Hybrid Damper,SFHD)。基于SMA螺旋弹簧和摩擦装置的力学模型,建立了SFHD的恢复力模型。进而,将上述新型阻尼器用作双层球面网壳结构的耗能支撑,采用ABAQUS软件建立了整体结构的有限元模型,对该结构进行了多维地震作用下的非线性时程计算,对比分析了受控结构与无控结构的动力响应特征。研究结果表明:强震作用下受控结构中的新型减震支撑耗能作用显著,可有效降低结构的地震响应。To improve the seismic control behavior of current friction dampers,a new type of hybrid damper combining large-scale of shape memory alloy（SMA） springs and friction device（SMA spring-friction hybrid damper,SFHD） was presented. Based on the mechanical models of SMA spring and frictional force model,a restoring force model for SFHD was developed. The proposed SFHD devices were used as energy dissipation braces for seismic control of a double-layer sphericallattice shell with surrounding columns. By using the ABAQUS software,a FE model of the structure was established,and a dynamic analysis under multi-dimensional seismic excitation was carried out.The dynamic responses of controlled and uncontrolled lattice shells were compared and analyzed.The results indicate that the proposed damping braces provide full hysteresis loops that benefit energy dissipation and exhibit excellent seismic control effect on attic shell roof and its supporting structure.

关 键 词：双层球面网壳 减震控制 复合耗能支撑 动力分析 地震响应 

分 类 号：TU393.3[建筑科学—结构工程] TU311.3