| DX桩群桩承载性状的数值分析 |
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| 引用本文： | 张清林,陈立宏.DX桩群桩承载性状的数值分析[J].中国工程科学,2012,14(1):51-59. |
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| 作者姓名： | 张清林 陈立宏 |
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| 作者单位： | 1. 中国建筑股份有限公司技术中心,北京101300;北京交通大学土木建筑工程学院,北京100044
2. 北京交通大学土木建筑工程学院,北京,100044 |
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| 摘 要： | 通过数值计算对不同桩间距的DX桩群桩进行了分析研究。结果表明：DX桩的群桩效应随着桩间距的减小而逐渐明显，间距为6倍桩径的群桩极限承载力是间距为3倍桩径的群桩极限承载力的1.32倍；群桩间距由3倍桩径增大为6倍桩径时，群桩效应系数由0.59增大为0.78；群桩间土体沉降的最大值发生在两扩盘中间位置处，且随着桩间距的增大而减小。
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| 关 键 词： | DX桩 群桩 沉降 数值分析 |
| 收稿时间： | 2011/10/20 0:00:00 |
| 修稿时间： | 2011/10/20 0:00:00 |
Study on load bearing characteristic of cast in situ DX group pile with numerical analysis |
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| Zhang Qinglin and Chen Lihong.Study on load bearing characteristic of cast in situ DX group pile with numerical analysis[J].Engineering Science,2012,14(1):51-59. |
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| Authors: | Zhang Qinglin and Chen Lihong |
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| Affiliation: | 1.Technology Center of China State Construction Co.,Ltd,Beijing 101300,China; 2.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | This paper analyzes 4 types of group-pile which contains 4 piles with spacing 1.5D,2D,2.5D and 3D(D is diameter of the bearing plate)by numerical analysis,and draws some conclusions.The main conclusions are: group pile effect of DX pile increases sharply when pile spacing decreases;the bearing capacity of 3D spacing group-pile is 1.32 times larger than that of 1.5D spacing group-pile;effect coefficient of group-pile increases from 0.59 to 0.78 when spacing increases from 1.5D to 3D;the maximum value of settlement of soil among group-pile occurs between two bearing plates,and it decreases when the spacing of pile increases. |
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| Keywords: | DX pile group-pile settlement numerical analysis |
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