基于可靠度的核心筒结构抗震性能研究  

Study on seismic performance of composite core wall structure based on reliability

作　　者：汪梦甫[1] 杜若霜 Wang Meng-fu;Du Ruo-shuang(College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《工程抗震与加固改造》2023年第3期1-7,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金资助项目(51278181)。

摘　　要：在试验基础上应用OpenSees软件建立组合核心筒的有限元模型,并由此完成组合核心筒结构的可靠度分析。将水平荷载、钢筋弹性模量等9种因素作为随机变量,以层间位移角不超过所要求阈值为标准,基于蒙特卡罗方法探究不同参数取值大小分别对组合核心筒结构可靠度的影响。参考正交试验的方式进行参数组合,进一步探究不同参数组合下组合核心筒结构可靠性能的变化规律,以符合可靠度规范要求为标准,得出了在规定的设计轴压比下,对应的组合核心筒的高宽比、连梁跨高比、暗支撑含钢率的取值范围。Based on the test results and using the software OpenSees,the finite element model of the composite core wall is established,and the reliability analysis of the composite core wall is finished by the verified finite element model.Nine factors such as horizontal load and reinforcement elastic modulus are taken as random variables,and taking the inter-story drift angle not exceeding the required threshold as the standard,the influence of different parameters on the reliability of composite core wall structure is studied based on Monte Carlo method.The parameter combination is carried out by using the orthogonal test,and the variation law of the reliability performance of the composite core wall structure under different parameter combinations is further explored.Taking the reliability requirement in related specification as the standard,the rational range of the aspect ratio,span-depth ratio of coupling beam,and steel ratio of concealed bracings of the composite core wall under the specified design axial compression ratio is obtained.

关 键 词：组合核心筒 抗震性能 有限元分析 层间位移角 

分 类 号：TU375[建筑科学—结构工程]