| 基于随机场理论的散体材料桩复合地基承载力可靠度研究 |
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| 引用本文： | 丁继辉,郭静,徐成杰.基于随机场理论的散体材料桩复合地基承载力可靠度研究[J].工程力学,2007,24(Z1):108-113. |
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| 作者姓名： | 丁继辉 郭静 徐成杰 |
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| 作者单位： | 河北大学机械与建筑工程学院,河北,保定,071002 |
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| 摘 要： | 根据Vanmarche提出的土层概率模型,以散体材料桩为例建立了复合地基极限承载力可靠度概率分析模型,模型中考虑了基础性状的影响,采用JC法进行可靠度计算。通过实例讨论了基本变量的变异性、置换率、桩间土发挥系数、滑动面与水平面夹角、桩体材料的内摩擦角等对可靠度指标的影响。
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| 关 键 词： | 土层概率模型 散体材料桩 复合地基 极限承载力 可靠性指标 |
| 文章编号： | 1000-4750(2007)Sup.Ⅰ-0108-06 |
| 修稿时间： | 2006年8月6日 |
STUDY ON BEARING CAPACITY RELIABILITY OF COMPOSITE FOUNDATION WITH GRANULAR SOIL PILE BASED ON RANDOM FIELD THEORY |
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| DING Ji-hui,GUO Jing,XU Cheng-jie.STUDY ON BEARING CAPACITY RELIABILITY OF COMPOSITE FOUNDATION WITH GRANULAR SOIL PILE BASED ON RANDOM FIELD THEORY[J].Engineering Mechanics,2007,24(Z1):108-113. |
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| Authors: | DING Ji-hui GUO Jing XU Cheng-jie |
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| Abstract: | A probability model for bearing capacity of composite foundation with granular soil pile is developed,which considers the effects of depth and shape of the foundation. JC method is used to calculate the reliability index. The effects on reliability index of variety coefficient of random variables,replacement ratio,load-bearing factor of soil,slip plane angle,and internal friction angle of soil are analyzed. |
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| Keywords: | probability model granular soil pile composite foundation ultimate bearing capacity reliability index |
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