| 基于随机场理论的地基稳定性模糊可靠度分析 |
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| 引用本文： | 张梅花,高谦,翟淑花.基于随机场理论的地基稳定性模糊可靠度分析[J].山西建筑,2008,34(29). |
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| 作者姓名： | 张梅花 高谦 翟淑花 |
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| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083 |
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| 摘 要： | 根据Vanmarcke提出的随机场理论描述土性参数的空间变异性,建立了考虑土性参数空间变异性的地基失稳模糊概率公式,并通过实例分析了两种情况下地基的模糊失效概率值,得出用随机场理论空间均值方差计算的模糊失效概率值比不考虑土性参数的空间变异性计算模糊失效概率值偏低的结论.
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| 关 键 词： | 随机场 空间变异性 相关距离 地基承载力 模糊可靠度 |
The ambiguous reliability analysis of the foundation stability based on random field theory |
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| ZHANG Mei-hua,GAO Qian,ZHAI Shu-hua.The ambiguous reliability analysis of the foundation stability based on random field theory[J].Shanxi Architecture,2008,34(29). |
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| Authors: | ZHANG Mei-hua GAO Qian ZHAI Shu-hua |
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| Affiliation: | ZHANG Mei-hua GAO Qian ZHAI Shu-hua |
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| Abstract: | The paper applies the theory of random field proposed by Vanmarcke to describe the spatial variability of soil properties.The formulae of ambiguous probability of foundation losing its stability have been established.The ambiguous failure probability value of the foundation was calculated by means of an example.The result is compared with that of no considering the correlation of itself,and conclusie that the ambiguous failure probability value under considering the correlation of itself is less than that under no considering the correlation of itself is drawn. |
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| Keywords: | random field spatial variability correlation distance foundation bearing capacity ambiguous reliability |
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