多维地震下平立面不规则金属耗能结构的性能分析  

Performance Analysis of Flat Facade Irregular Metal Energy Dissipation Structure under Multidimensional Earthquake

作　　者：李慧[1] 滕晓飞[2] 杜永峰[1,2] 

机构地区：[1]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050 [2]兰州理工大学防震减灾研究所,甘肃兰州730050

出　　处：《工程抗震与加固改造》2011年第6期28-33,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金(50978130)

摘　　要：为使平立面不规则结构具有良好的抗扭性和整体性,更好地满足抗震设防要求,本文提出了设置金属阻尼器来控制结构平面不规则和立面不规则参数的设想和实现方法,并对一栋9层的L型平立面不规则结构在设置金属阻尼器前后建立了分析模型。通过对该模型的动力时程分析表明,设置金属阻尼器不仅能够有效消耗地震能量,降低结构水平位移,而且在控制扭转变形的同时增强了整体结构的侧向刚度。研究表明:通过设置金属阻尼器控制结构的平立面不规则参数,增强结构整体抗震性能的设想是可行的。To make flat facade irregular frame structure with good resistance to twist and integrity,to satisfy the requirements of seismic fortification intensity,in this paper,the metal damper to control plane irregular and facade irregular tentative plan and implementation method are put forward,and a nine-floors L flat facade irregular model with metal dampers is established.The dynamic time-history analysis shows that install metal damper can not only reduce the horizontal displacement,also strengthening the structure stiffness and enhance wrest resistant structure the lateral stiffness.Research shows that metal damper can not only effective consume earthquake energy and horizontal displacement also control the torsional deformation and enhance overall structure stiffness under earthquake.By setting a metal damper to control structure parameters of the flat facade irregular,strengthening the structure integrity is feasible.

关 键 词：平立面不规则 金属阻尼器 周期比 位移比 侧向刚度 薄弱层 

分 类 号：TU352.1[建筑科学—结构工程]