| DX旋挖挤扩灌注桩不同承力盘数性能对比研究 |
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| 引用本文： | 张德华,齐万鹏,贺德新.DX旋挖挤扩灌注桩不同承力盘数性能对比研究[J].中国工程科学,2012,14(1):26-30. |
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| 作者姓名： | 张德华 齐万鹏 贺德新 |
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| 作者单位： | 1. 北京交通大学土木建筑工程学院,北京,100044
2. 北京中阔地基基础技术有限公司,北京,100097 |
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| 基金项目： | 国家自然科学基金创新研究群体资助（50921001） |
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| 摘 要： | 通过数值模拟计算，对DX单桩的沉降和承载力特性进行了研究，分析了在相同的桩长、桩径等条件下直孔桩、两个承力盘DX桩和三个承力盘DX桩的性能差异。沉降方面，在桩顶荷载增加相同的情况下，两个承力盘DX桩对桩顶沉降的控制明显强于普通直孔桩的控制效果，三个承力盘DX桩则进一步优越于两个承力盘DX桩。承载力方面，两个承力盘DX单桩的抗压承载力大约为直孔桩的1.5倍，而三个承力盘DX桩又进一步优越，大约为两个承力盘DX桩的1.2倍。
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| 关 键 词： | DX桩 扩盘数量 承载力 沉降 |
| 收稿时间： | 2011/10/20 0:00:00 |
| 修稿时间： | 2011/10/20 0:00:00 |
Study on property comparison of DX pile casted in place with various quantities of bearing bells |
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| Zhang Dehu,Qi Wanpeng and He Dexin.Study on property comparison of DX pile casted in place with various quantities of bearing bells[J].Engineering Science,2012,14(1):26-30. |
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| Authors: | Zhang Dehu Qi Wanpeng and He Dexin |
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| Affiliation: | 1.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China; 2.Beijing Zhongkuo Foundation Technology Co.,Ltd,Beijing 100097,China) |
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| Abstract: | Based on numerical simulation,bearing capacity and settlement control for DX piles are studied.The property differences of conventional straight piles,DX piles with 2 bells and DX piles with 3 bells are presented in condition of identical length,diameter,and bearing capacity.Under the same load,DX piles with 3 bells have smaller settlement than that of DX piles with 2 bells and straight piles.As to bearing capacity,DX piles with 2 bells are 1.5 times greater than that of the straight piles,while DX piles with 3 bells are 1.2 times greater than that of DX piles with 2 bells.The paper can provide theoretical references for the design of bearing capacity of DX piles during the engineering practice. |
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| Keywords: | DX pile quantity of bearing bells bearing capacity settlement |
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