| 海洋地基土的随机场特性 |
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| 引用本文： | 肖智旺,闫澍旺,刘润.海洋地基土的随机场特性[J].海洋技术,2005,24(4):73-79. |
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| 作者姓名： | 肖智旺 闫澍旺 刘润 |
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| 作者单位： | 天津大学建工学院,天津,300072 |
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| 基金项目： | 国家自然科学基金资助项目：（50379034） |
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| 摘 要： | 对随机场理论应用于海洋土地基可靠度研究中的必要性及其理论意义进行了深入的分析和探讨，提出了检验土性指标的平稳性和各态历经性的方法，结合渤海油田在开发和建设中积累的大量工程地质勘察资料，对海洋土竖直和水平向土性剖面建立齐次正态随机场模型。并在此基础上，以渤海某油田海洋平台的地基可靠度分析为例，说明随机场理论在海洋土地基可靠度分析中的具体应用及其所发挥的重要作用。
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| 关 键 词： | 随机场 相关性 相关距离 方差折减函数 可靠度指标 |
| 文章编号： | 1003-2029（2005）04-0073-07 |
| 收稿时间： | 2004-12-12 |
| 修稿时间： | 2004年12月12 |
Random Field Characters of Properties of Marine Soil |
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| XIAO Zhi-wang,YAN Shu-wang,LIU Run.Random Field Characters of Properties of Marine Soil[J].Ocean Technology,2005,24(4):73-79. |
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| Authors: | XIAO Zhi-wang YAN Shu-wang LIU Run |
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| Institution: | School of Civil Engineering, Tianjin University 300072 |
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| Abstract: | In this paper, the importance and necessity of introducing random field theory into reliability analysis of offshore structure foundations have been depicted in details. The testing method about how to verify the stationarity and ergodicity of soil profile was recommended. Basing on a great deal of geotechnical investigations, the stationarity and ergodicity of a soil profile in SZ36-1 Oil Field has been examined and a random field modeling has been established. The correlation function, correlation distance and variation reduction function of SZ36- 1 Oil Field have been simulated. As an example, a reliable analysis of a platform foundation was described in order to show the importance of applying the random field theory in reliability analysis of offshore structure. |
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| Keywords: | random field stationarity ergodicity database variation reduction function reliable index |
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