| 大直径钻孔灌注桩群桩效应非线性分析 |
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| 引用本文： | 杜娟,陈奕柏,陈颖杰.大直径钻孔灌注桩群桩效应非线性分析[J].海南大学学报(自然科学版),2007,25(1):70-74. |
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| 作者姓名： | 杜娟 陈奕柏 陈颖杰 |
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| 作者单位： | 1. 海南大学,理工学院,海南,海口,570228
2. 海南省第六建筑工程有限公司,海南,海口,570000 |
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| 基金项目： | 海南大学科研基金资助项目(Kyjj0549) |
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| 摘 要： | 应用有限单元法应用程序对不同群桩效应系数下大直径钻孔灌注桩的群桩效应进行了较为深入系统的数值分析,提出了以群桩周边包络线范围内的桩身体积与土体体积(含桩体积)之比作为新的折减系数,并采用该系数对单桩p-y曲线进行折减后得到的群桩p-y曲线作为桩土横向作用模型,对大直径钻孔灌注桩的群桩效应进行非线性分析,比传统方法具有一定的优越性.实例证明了笔者给出的折减系数的可行性和简便性.
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| 关 键 词： | 大直径钻孔灌注桩 折减系数 p-y曲线 桩土相互作用 |
| 文章编号： | 1004-1729(2007)01-0070-05 |
| 修稿时间： | 2006年3月1日 |
Nonlinear Analysis of Pile Group Effect of Large Diameter Cast-in-situ Pile |
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| DU Juan,CHEN Yi-bai,CHEN Ying-jie.Nonlinear Analysis of Pile Group Effect of Large Diameter Cast-in-situ Pile[J].Natural Science Journal of Hainan University,2007,25(1):70-74. |
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| Authors: | DU Juan CHEN Yi-bai CHEN Ying-jie |
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| Abstract: | The finite element method program is used to analysis the pile group effect of large diameter cast-in-situ piles deeply with different coefficients of pile group effect.The paper presents the method that the ratio of the volume of pile and soil in the ambient range of pile group is used to express the new reduced coefficient and in which the p-y curves of pile group after reduced are adopted as horizontal interaction model.On these conditions mentioned above,a pile group effect of large diameter cast-in-situ piles is analyzed nonlinearly.At the same time,some different coefficients of pile group effect are adopted to calculate.Compared with these results,the feasibility and conciseness of this reduced coefficient are testified. |
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| Keywords: | large diameter cast-in-situ pile reduced coefficient p-y curve pile-soil interaction |
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