PFD-SMA支撑体系的抗震性能  

Hysteretic behavior of advanced PFD-SMA frictional damping brace system

作　　者：张纪刚[1,2] 卢爱贞[3] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116023 [3]北京工业大学建筑工程学院,北京100124

出　　处：《中南大学学报（自然科学版）》2011年第10期3157-3163,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50809032);中国博士后科学基金第二批特别资助项目(200902540);山东省优秀中青年科学家科研奖励基金(博士基金)资助项目(BS2010HZ008);海岸和近海工程国家重点实验室开放基金资助项目(LP1009)

摘　　要：对传统的Pall摩擦阻尼支撑体系进行改进,提出一种PFD-SMA支撑体系,充分利用Pall摩擦阻尼器(PFD)和形状记忆合金(SMA)的优点,使该体系具有强耗能能力和自复位功能;考虑几何非线性采用ANSYS程序对SMA棒材和PFD-SMA体系进行分析。研究结果表明:SMA棒材具有较强的耗能能力,且可恢复应变大;在钢框架结构中采用PFD-SMA体系能有效降低结构的地震响应,提高结构的抗震性能,同时,该体系可通过形状记忆超弹性及形状记忆效应具有双重自复位功能,表明PFD-SMA体系具有良好的抗震性能。The traditional Pall friction damping brace system was improved,and a PFD-SMA brace system was presented,which makes full use of Pall friction dampers（PFD） and shape memory alloy（SMA） so that the system has the energy dissipation ability and self-resetting function.The shape memory alloy bar and the PFD-SMA system were analyzed using ANSYS based on geometric nonlinearity.The results show that the capacity of the shape memory bar is strong,and its recovery deformation is much larger.The system can effectively reduce the seismic response of structure to improve the seismic performance of the high-rise steel frame,so the system has a dual self-resetting function based on the super elastic and shape memory effects of SMA,which indicates the PFD-SMA system has better seismic performance.

关 键 词：形状记忆合金(SMA) Pall型摩擦阻尼器(PFD) 耗能减震 几何非线性 

分 类 号：TU311[建筑科学—结构工程]