减轻框架结构地震反应的新型消能减震装置  

New Energy Dissipation Device for Mitigating Seismic Responses of Frame Structures

作　　者：陈云 吕西林[1] 蒋欢军[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《结构工程师》2012年第2期95-100,共6页Structural Engineers

基　　金：国家自然科学基金重大研究计划项目(90815029);国家自然科学基金国际合作项目(51021140006)

摘　　要：首先,提出了一种减轻框架结构地震反应的新型消能减震装置,在底层框架柱的反弯点下方设置锚固装置,通过锚固装置把钢索、SMA拉索与框架连接起来,并将钢索和SMA拉索锚固在基础上。随后,对该方法进行了理论研究,提出了计算钢索和SMA索变形的公式。最后,通过算例进行地震反应时程分析。研究表明,该装置能够有效地控制结构的位移反应和加速度反应以及耗散输入结构的地震能量,在减轻框架结构地震反应方面具有一定的工程应用价值和前景。The article first proposed a new energy dissipation device for mitigating seismic responses of frame structures.The anchorage device was set near the inflection points of columns in the first floor,the upper sides of the steel cable and SMA cable were installed in the anchorage device and the other sides of them were fixed in the ground.Subsequently,the theory was studied and the calculation method of the deformation formula of the cables was proposed.Finally,the time-history analysis was studied by ANSYS finite element program.Studies showed that the device can be effectively used to control the structural displacement responses and acceleration responses,dissipating large amounts of earthquake energy.Therefore,the energy dissipation device has an important value and prospects in engineering.

关 键 词：反弯点 钢索 SMA拉索 动力时程分析 

分 类 号：TU352.1[建筑科学—结构工程]