| 夯扩载体CFG桩承载力性状分析 |
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| 引用本文： | 任鹏,于志强,康景文.夯扩载体CFG桩承载力性状分析[J].建筑科学,2009,25(1). |
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| 作者姓名： | 任鹏 于志强 康景文 |
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| 作者单位： | 1. 西南交通大学土木工程学院,成都,610031
2. 中国建筑西南勘察设计研究院,成都,610081 |
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| 摘 要： | 通过分析夯扩载体CFG桩扩大头的形成机理,得出了夯扩载体CFG桩的单桩竖向极限承载力标准值的经验公式,并且采用数值模拟正确地反映了夯扩载体CFG桩的承载力性状.需要指出,在数值模拟时,可通过分段线形插值的办法来确定挤密区各个土层的材料参数,结果证明此方法能够较好地反映真实情况.通过公式计算、数值模拟和现场实测结果的单桩竖向极限承载力对比分析,揭示了夯扩载体CFG桩承载力性状的基本规律,为夯扩载体CFG桩设计计算提供了依据.
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| 关 键 词： | 夯扩载体CFG桩 承载力 扩大头 夯扩挤密区 |
Bearing Capacity Properties for Rammed Enlarged Carrier CFG Piles |
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| REN Peng,YU Zhi-qiang,KANG Jing-wen.Bearing Capacity Properties for Rammed Enlarged Carrier CFG Piles[J].Building Science,2009,25(1). |
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| Authors: | REN Peng YU Zhi-qiang KANG Jing-wen |
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| Affiliation: | 1.College of Civil Engineering;Southwest Jiaotong University;Chengdu 610031;China;2.China Southwest Architectural Design & Research Institute;Chengdu 610081;China |
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| Abstract: | Based on the forming mechanism of the head-expanding of ram-compaction CFG piles with carrier base,the empirical formula of single pile vertical bearing capacity is obtained.And the bearing capacity of ram-compaction CFG piles with carrier base is studied by using numerical simulation.The model parameters of densities soil are determined by piecewise linear interpolation so that the special characteristics of the bearing capacity of the piles can be accurately analyzed.According to the comparison of the sin... |
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| Keywords: | ram-compaction CFG pile with carrier base bearing capacity expanded head compacted zone |
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