摩擦-SMA弹簧复合耗能支撑在周边支承单层球面网壳结构中的减震效应研究  

Seismic control effect of friction-SMA spring hybrid energy dissipation braces in a single-layer spherical lattice shell with surrounding columns

作　　者：庄鹏 王文婷[1] 韩淼 薛素铎 ZHUANG Peng;WANG Wenting;HAN Miao;XUE Suduo(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing University of Civil Engineering and Architecture Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China;Beijing University of Civil Engineering and Architecture Beijing Higher Institution Engineering Research Center of Structural Engineering and New Materials,Beijing 100044,China;College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China)

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：《振动与冲击》2018年第4期99-109,共11页Journal of Vibration and Shock

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(8132024)

摘　　要：提出了一种新型摩擦-SMA弹簧复合耗能装置(Friction-SMA spring Device,FSD),该阻尼装置由大尺寸超弹性SMA螺旋弹簧装置和摩擦耗能装置。基于SMA装置和摩擦装置的力学模型,建立了FSD的恢复力模型。将FSD用于周边支承单层球面网壳结构的耗能支撑(Friction-SMA spring Brace,FSB)。采用ABAQUS软件建立了整体结构的有限元模型,对其进行了多维地震作用下的动力弹塑性分析,对比分析了受控结构与无控结构中屋盖和下部框架的位移响应、加速度响应、等效塑形应变和能量响应。研究结果表明:设置于网壳屋盖下部结构中的FSB在强震作用下可提供饱满的滞回环,有利于发挥耗能作用;强震作用下受控结构主要通过FSB进行耗能,可有效减轻主体结构的塑形发展和地震损伤;FSB对网壳屋盖及其支承结构在水平方向的减震效果优于竖向减震效果。A new type of hybrid energy dissipation device termed as friction-shape memory alloy(SMA)spring device(FSD)was presented in this word.This hybrid device consists of friction component and large-scale superelastic SMA helical springs.Based on the mechanical models of the SMA spring and frictional force,a restoring force model for the FSD was developed.The proposed FSD devices were used as energy dissipation brace(Friction-SMA spring Brace,FSB)for seismic control of a single-layer spherical lattice shell with surrounding columns.By using the ABAQUS software,the FE model of the complete structure was established and the dynamic elasto-plastic analysis under multi-dimensional seismic excitations was carried out.The displacement response,acceleration response,equivalent plastic strain and energy response of the roof and the supporting structure in the controlled and uncontrolled lattice shells were compared and analyzed.The results indicate that the FSB devices in the substructure of the lattice shell roof provide full hysteresis loops and benefit for energy dissipation.Under strong earthquakes,the energy dissipation of the controlled structure mainly depends on the SFB,which reduces plastic development and seismic damage.In addition,the FSB devices exhibit superior seismic control effect of the horizontal response to that of the vertical response of the lattice shell roof and its supporting structure.

关 键 词：单层球面网壳 减震控制 复合耗能支撑 动力弹塑性分析 地震响应 

分 类 号：TU393.3[建筑科学—结构工程]