| 群桩基础的可靠性分析 |
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| 引用本文： | 谷拴成,田晓艳,李源,吴翔天.群桩基础的可靠性分析[J].西安科技大学学报,2005,25(4):456-460. |
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| 作者姓名： | 谷拴成 田晓艳 李源 吴翔天 |
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| 作者单位： | 西安科技大学,建筑与土木工程学院,陕西,西安,710054 |
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| 摘 要： | 用一维高斯随机场理论，研究了钻孔灌注桩极限承载力的统计参数。相关函数法和方差函数法被用来计算土层的相应范围，通过静力触探和静载荷试验确定钻孔桩的极限承载力的统计特性。考虑到群桩效应，通过桩基础的沉降量来计算其效应，而且单桩和群桩的可靠度由Monte-carlo法来确定。最后与不考虑随机场理论的结果进行比较，系统地研究了桩基础在竖向荷载作用下的可靠度。
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| 关 键 词： | 群桩 稳定随机场 可靠度指标 |
| 文章编号： | 1672-9315（2005）04-0456-05 |
| 收稿时间： | 2004-11-30 |
| 修稿时间： | 2004年11月30 |
Reliability analysis of group piles foundation |
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| GU Shuan-cheng,TIAN Xiao-yan,LI Yuan,WU Xiang-ting.Reliability analysis of group piles foundation[J].JOurnal of XI’an University of Science and Technology,2005,25(4):456-460. |
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| Authors: | GU Shuan-cheng TIAN Xiao-yan LI Yuan WU Xiang-ting |
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| Abstract: | One-dimension stable Gaussian random filed is treated as numerical model of geotechnical parameters of pile foundation.Correlative function method and variable function method are used to calculate the relevant range of soil layer.The limit capacity of bored pile is determined by the cone penetration test(CPT) and the static loading tests and related statistics parameters are also evaluated.Considering the effects of group piles,the action effect is calculated by the settlement of pile foundation and reliability index of single pile as well as group piles is determined by Monte-Carlo method.At last, the results are compared with those without adoption of random field model and reliability of pile foundation under vertical load is systematically studied. |
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| Keywords: | group piles stationary random fields reliability index |
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