基础隔震结构直接基于位移设计研究  

Base-isolated Structure Based on Direct Displacement Design

作　　者：方泓杰 董昕珺 林友勤[1] 吴应雄[1] 邓烜 商昊江 章永伟 FANG Hongjie;DONG Xinjun;LIN Youqin;WU Yingxiong;DENG Xuan;SHANG Haojiang;ZHANG Yongwei(College of Ciil Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;China Architectural Standards Design and Research Institute Co.,Ltd.,Beijing 100000,China;Fujian Building Research Institute Go.,Ltd.,Fuzhou,Fujian 350100,China;Longyan Xi'an Construction Engineering Co.,Ltd.,Longyan,Fujian 364000,China)

机构地区：[1]福州大学土木工程学院,福建福州350108 [2]中国建筑标准设计研究院有限公司,北京100000 [3]福建省建筑科学研究院有限责任公司,福建福州350100 [4]龙岩市西安建筑工程有限公司,福建龙岩364000

出　　处：《水利与建筑工程学报》2022年第1期171-176,共6页Journal of Water Resources and Architectural Engineering

基　　金：福建省住房和城乡建设厅科技开发研究项目(2022-K-114)。

摘　　要：目前主流的抗震性能化设计方法是直接基于位移的设计方法,在地震作用下,该方法可有效控制结构的损伤和变形。针对基础隔震结构的设计,有必要提出一种直接基于位移的设计方法。通过对LRB隔震系统进行等效线性化建立等效2DOF模型,再结合振型分解反应谱法,建立隔震层和上部结构的位移反应的数学表达式,并结合标准的DDBD方法提出了基于位移的隔震设计方法。最后采用提出的基础隔震设计方法对一榀钢筋混凝土平面框架进行设计,并对设计结构进行弹塑性时程分析,时程分析结果证实提出的设计方法的有效性。The current mainstream seismic performance-based design method is directly based on the displacement design method. The seismic response of structures designed with this method could be tremendously reduced. For the design of foundation isolation structures,it is necessary to propose a direct displacement-based design method. Through the equivalent linearization of the LRB isolation system,an equivalent 2 DOF model is established,and then combined with the mode decomposition response spectrum method,the mathematical expression of the displacement response of the isolation layer and the superstructure is established,which are displacement isolation design method. Finally,the proposed foundation isolation design method is used to design a reinforced concrete plane frame,and the elastoplastic time-history analysis of the designed structure is carried out. The time-history analysis results confirm the effectiveness of the proposed design method.

关 键 词：基础隔震结构 隔震设计方法 非线性分析 

分 类 号：TU352.1[建筑科学—结构工程]