| 项梦洁,秦云,王宪杰,杨思昭,龙诗琪.基于新建筑抗震设计规范考虑场地土特性的人工波生成及可靠性研究[J].计算力学学报,2019,36(3):345~351 |
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| 基于新建筑抗震设计规范考虑场地土特性的人工波生成及可靠性研究 |
| Generation of artificial seismic wave and reliability study based on the new seismic code considering site soil properties |
| 投稿时间：2017-09-01 修订日期：2017-12-16 |
| DOI：10.7511/jslx20170901001 |
| 中文关键词: 场地类别 随机过程 结构弹塑性分析 可靠度 |
| 英文关键词:site classification stochastic process elastic-plastic analysis reliability |
| 基金项目:广西重点实验室系统性研究（2016ZDK009）；云南省教育厅科学研究基金（2016zzx005）；东陆骨干教师基金；云南大学理工科校级科学研究基金资助项目. |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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