钢筋混凝土框架结构弹塑性分析简化方法研究  

A SIMPLIFIED METHOD FOR ELASTOPLASTIC ANALYSIS OF REINFORCED CONCRETE FRAME STRUCTURES

作　　者：李超[1] 杨晔 LI Chao;YANG Ye(College of Civil Engineering and Architcture,Zhejiang University,Hangzhou 310058,China;Zhejiang Lancheng Lejing Architectural Planning and Design Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]浙江蓝城乐境建筑规划设计有限公司,杭州310000

出　　处：《低温建筑技术》2022年第3期87-91,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金项目(52178172)。

摘　　要：为提高罕遇地震作用下分析效率,降低选波的不确定性。基于能量等效准则,提出基于梁柱等效刚度的弹性反应谱计算方法,并得到构件的刚度折减系数。以十层钢筋混凝土框架为例,通过不同地震作用下与时程法的对比分析进行验证。结果表明该方法能较好的分析框架结构在罕遇地震作用下的位移响应,与时程分析法相比,可极大减少结构的计算时间。To improve the analysis efficiency under rare earthquakes and reduce the uncertainty of wave selection,an elastic response spectrum calculation method based on the equivalent stiffness of beams and columns is proposed, and the stiffness reduction coefficient of members is obtained based on the energy equivalence criterion. Taking a ten story reinforced concrete frame as the case, it is verified by the comparative analysis with the time history method under different earthquake actions. The results show that the method effectively analyze the displacement response of frame structure under rare earthquakes, and can greatly reduce the calculation time of structure compared with time history analysis method.

关 键 词：钢筋混凝土框架结构 能量等效准则 刚度折减系数 等效弹性反应谱法 

分 类 号：TU375.4[建筑科学—结构工程]