| 矩形基础地基极限承载力计算理论探讨 |
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| 引用本文： | 杨京方,曹永华,黄传志. 矩形基础地基极限承载力计算理论探讨[J]. 中国港湾建设, 2010, 0(6): 1-5 |
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| 作者姓名： | 杨京方 曹永华 黄传志 |
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| 作者单位： | 中交天津港湾工程研究院有限公司港口岩土工程技术交通行业重点实验室天津市港口岩土工程技术重点实验室; |
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| 摘 要： | 基于空间曲面上一点的应力分析,得出了曲面上一点的法向应力、剪应力与应力分量、曲面一阶偏导数的关系。建立了曲面至地基表面土柱上力的微分平衡方程、力的平衡方程、力矩平衡方程。以上方程和库仑屈服条件一起,构成了地基极限承载力问题普遍适用的基本方程。采用与二维条件的简化Bishop法类似假定,对矩形基础地基承载力的计算问题进行了探讨。算例表明,文中方法计算结果是合理的,为研究三维条件的地基极限承载力提供了一套方法。
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| 关 键 词： | 空间曲面 应力分析 平衡方程 矩形基础 地基极限承载力 |
Discussion on the Calculation Theory of Rectangular Based Foundation Limit Bearing Capacity |
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| YANG Jing-fang,CAO Yong-hua,HUANG Chuan-zhi. Discussion on the Calculation Theory of Rectangular Based Foundation Limit Bearing Capacity[J]. China Harbour Engineering, 2010, 0(6): 1-5 |
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| Authors: | YANG Jing-fang CAO Yong-hua HUANG Chuan-zhi |
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| Affiliation: | YANG Jing-fang,CAO Yong-hua,HUANG Chuan-zhi(CCCC Tianjin Port Engineering Institute Co.,Ltd.,Key Laboratory of Port Geotechnical Engineering of the Ministry of Communication,Key Laboratory of Port Geotechnical Engineering of Tianjin,Tianjin 300222,China) |
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| Abstract: | Based on stress analysis on one point of space curved surface,the relationships between the normal stress,shear stress,stress components,and first-order partial derivative of the point are obtained;the differential balance equation,force balance equation and moment balance equation of the force on column between space curved surface and foundation surface are established;together with the coulomb yield conditions,the basic equation,which is universally applicable to the foundation limit bearing capacity pro... |
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| Keywords: | space curved surface stress analysis balance equation rectangular foundation foundation limit bearing capacity |
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