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Generation of artificial seismic wave and reliability study based on the new seismic code considering site soil properties[J].计算力学学报,2019,36(3):345~351

Generation of artificial seismic wave and reliability study based on the new seismic code considering site soil properties
Generation of artificial seismic wave and reliability study based on the new seismic code considering site soil properties

DOI：10.7511/jslx20170901001

 作者 单位 E-mail 项梦洁 云南大学 建筑与规划学院, 昆明 650091广西大学 防灾减灾与工程安全重点实验室, 南宁 530004广西大学 工程防灾与结构安全教育部重点实验室, 南宁 530004 秦云 云南大学 建筑与规划学院, 昆明 650091 王宪杰 云南大学 建筑与规划学院, 昆明 650091广西大学 防灾减灾与工程安全重点实验室, 南宁 530004广西大学 工程防灾与结构安全教育部重点实验室, 南宁 530004 xianjiewang@ynu.edu.cn 杨思昭 云南大学 建筑与规划学院, 昆明 650091 龙诗琪 云南大学 建筑与规划学院, 昆明 650091

基于新《建筑抗震设计规范》对场地土特性和人工波选择的要求，将地震动作为随机过程，利用修正胡聿贤-周锡元模型以及基于Hartley正交基的地震动随机过程经双调制生成不同场地土特性的人工地震波，以6层钢筋混凝土结构非线性随机地震反应分析为例，研究了不同场地土特性人工波对结构位移可靠度的影响。结果表明，场地土因素对人工波生成以及结构的动力响应影响较大，不同场地土人工波具有明显的统计学特性，均满足建筑抗震设计规范的选波要求，为最新《建筑抗震设计规范》要求考虑大量不同场地土效应的地震波生成提供了新的解决办法。

Based on the requirements of new seismic code for site soil properties and artificial seismic wave selection,this of paper considers the seismic action as a random process,and the stochastic process model acceleration generated by the orthogonal expansion of the modified Hu-Zhou model is modulated through the non-stationary intensity modulation index to generate artificial seismic waves of different soil properties.Taking the nonlinear random seismic response analysis of a 6-storey reinforced concrete structure as an example,the influence of artificial seismic waves on the reliability of structural displacement is studied.The results show that the site soil properties have a great influence on artificial seismic wave generation and the structures dynamic response,and the artificial seismic wave of different sites has obvious statistical characteristics,which meet the requirements of seismic wave selection and provide a new solution of providing seismic waves of different site soil properties for the latest seismic code.