【摘要】 在地震工程中,结构设计参数的不确定性会使结构的抗震性能具有一定的离散性.以钢筋混凝土(reinforced concrete,RC)框架柱构件为研究对象,采用ABAQUS和Open Sees软件建立数值分析模型,并用实验结果验证了模型的准确性.在此基础上,进一步考虑材料性能、构件几何尺寸参数随机性的影响,得到了RC框架柱的随机受力性能的概率统计特征.结果表明:RC框架柱构件最大剪力可以用正态分布描述,而位移可以采用对数正态分布描述,但有一定的误差.更多还原

【Abstract】 The uncertainty of the basic material parameters of the structure will make the seismic capacity of the structural members have certain discreteness. Based on ABAQUS and Open Sees platform, the numerical simulation of reinforced concrete frame columns is carried out in this paper, and the validity of the model is verified by comparison with the experiment. On this basis, the influences of material properties and geometrical dimension parameters of members are further considered, and the corresponding probability eigenvalues and probability distribution models are given. The results show that the maximum shear force of column members can be described by normal distribution, while the displacement can be described by lognormal distribution with some errors. Therefore, the analysis of structural uncertainty is particularly important.更多还原