| 产生刺入的复合地基摩阻力计算方法 |
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| 引用本文： | 亓乐,施建勇.产生刺入的复合地基摩阻力计算方法[J].长江科学院院报,2009,26(4):31-35. |
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| 作者姓名： | 亓乐 施建勇 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,南京,210098;河海大学岩土工程科学研究所,南京,210098 |
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| 摘 要： | 根据分析复合地基桩土荷载传递机理,指出了目前摩阻力计算公式的不足。以桩土极限相对位移为界限,将桩分为2部分:接触面塑性段和接触面弹性段,对2部分的摩阻力分别采用2种不同的方法计算。采用有效应力法计算塑性滑动段摩阻力,并考虑了侧向土压力变化的影响；在接触面弹性段,假定摩阻力与桩土相对位移为线弹性关系,利用荷载传递法进行计算。由此推导出了摩阻力的计算公式,并可计算得到中性点深度和桩顶、桩端处的桩土应力比。实例表明,该计算方法与现场实测结果吻合较好。
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| 关 键 词： | 摩阻力 有效应力法 荷载传递法 刺入 |
Method for Calculating Skin Friction of Composite Ground with Penetration |
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| QI Le,SHI Jian-yong.Method for Calculating Skin Friction of Composite Ground with Penetration[J].Journal of Yangtze River Scientific Research Institute,2009,26(4):31-35. |
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| Authors: | QI Le SHI Jian-yong |
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| Affiliation: | QI Lea,b,SHI Jian-yonga,b(a.Key Laboratory of Ministry of Education for Geomechanics , Embankment Engineering,b.Geotechnical Research Institute of Hohai University,Nanjing 210098,China) |
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| Abstract: | The limitation of the current calculating formula is pointed out based on the analysis of the loading mechanism of composite ground. The pile is divided into two situations based on the pile-soil limiting relative displacement,namely plastic stage and elastic stage.The two parts are calculated by different methods.The friction of plastic part is calculated by effective stress method which considers the confining pressure,and the friction of elastic part is calculated by load transfer method.A formula for ca... |
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| Keywords: | pile friction effective stress method load transfer method penetration |
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