| 场地地震响应随机动力可靠性分析 |
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| 引用本文： | 陈达钦.场地地震响应随机动力可靠性分析[J].上海力学,2001,22(2):228-233. |
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| 作者姓名： | 陈达钦 |
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| 作者单位： | 陈达钦（同济大学科技开发公司上海 200092） |
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| 摘 要： | 本文针对地震响应的随机不确定性，将地震作用简化为随机过程，基于土体材料在随机动荷载作用下的破坏是各应力水平荷载产生损伤的累积结果，与荷载施加的先后次序无关，结合可靠度民随机振动理论。提出了运用累积损伤模型的地震响应动力可靠性分析法，并针对上海地区某地的软土地基，进行实列计算，比较了以累积损伤量评价地基动力破坏与其他的可靠度指标β值法，孔隙水压力比评价地基液化的计算结果，得到一些有意义的结论。
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| 关 键 词： | 累积损伤模型 地震响应 随机场 抗震设计 随机过程 概率 动力可靠性分析 有限元 |
| 修稿时间： | 2000年9月22日 |
Study on Random Dynamic Reliability of Site Seismic Response |
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| CHEN Da-qing.Study on Random Dynamic Reliability of Site Seismic Response[J].Chinese Quarterly Mechanics,2001,22(2):228-233. |
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| Authors: | CHEN Da-qing |
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| Abstract: | Considering uncertainty of seismic response, earthquake effect is simplified as stochastic process in this paper. Combined with reliability and random vibration theory, a new method on dynamic reliability of seismic response, in which the accumulated damage model is used, is proposed with the assumption that failure of soil under random dynamic load is the result of damage accumulation of each grade of stress. The case history is demonstrated finally. |
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| Keywords: | accumulated damage model seismic response stochastic field stochastic process probability dynamic reliability analysis FEM |
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