| 场地土随机地震反应分析及动力可靠度计算 |
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| 引用本文： | 尚守平,李定乾,杜运兴.场地土随机地震反应分析及动力可靠度计算[J].工程抗震与加固改造,2007,29(1):26-29,32. |
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| 作者姓名： | 尚守平 李定乾 杜运兴 |
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| 作者单位： | 湖南大学土木工程学院,湖南,长沙,410082 |
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| 摘 要： | 根据随机振动理论,研究了土层随机地震反应动力分析方法,介绍了场地土在动剪模量的变化分别为线性和指数时动力方程的求解问题,分别给出了基岩输人地震加速度为白噪声和过滤白噪声时土层反应及各阶振型反应的统计参数,从而建立了可靠性分析的计算方法,并且对同一场地土采用两种动剪模量变化形式进行了自振频率的对比计算和动力可靠度计算.
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| 关 键 词： | 场地土 随机反应 动剪模量 自振频率 可靠度 |
| 文章编号： | 1002-8412（2007）01-0026-04 |
| 修稿时间： | 2006-05-31 |
Response Analysis and Dynamic Reliability Calculation for Random Seismic of Ground Soil |
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| Shang Shou-ping,Li Ding-qian,Du Yun-xing.Response Analysis and Dynamic Reliability Calculation for Random Seismic of Ground Soil[J].Earthquake Resistant Engineering and Retrofitting,2007,29(1):26-29,32. |
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| Authors: | Shang Shou-ping Li Ding-qian Du Yun-xing |
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| Affiliation: | Civil Engineering College, Hunan University, Changsha 410082, China |
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| Abstract: | On the basis of random vibration theory,the analysis methods for soil layer's random seismic response dynamic are studied in this paper.And the solutions to the dynamic equations when the dynamic-shear-modulus of ground soil varies between linear and index are introduced.For when the bedrock inputting seismic acceleration is white noise or filter white noise,the soil layer's response and the statistic parameters for each vibration response are also given respectively,which establishes a reliable analysis calculative method.And also the natural frequencies comparison calculation and the dynamic reliability calculation are carried out for the same ground soil under the two different dynamic-shear-modulus variations. |
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| Keywords: | ground soil random response dynamic shear modulus natural frequency dynamic reliability |
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