| 大直径扩径桩与等截面桩对比试验研究 |
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| 引用本文： | 杨果林,陈似华,林宇亮.大直径扩径桩与等截面桩对比试验研究[J].铁道科学与工程学报,2009,6(2). |
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| 作者姓名： | 杨果林 陈似华 林宇亮 |
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| 作者单位： | 中南大学,土木建筑学院,湖南,长沙,410075
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| 摘 要： | 扩径桩作为一种新型桩基形式得到很大的发展,但由于其桩身在某深度发生扩径突变,而给研究扩径桩的荷载传递性状带来不便.现有对扩径桩的研究只限于小直径桩的模型试验以及有限元分析,而对大直径扩径桩的研究比较缺乏.通过对同一场地的同一直径不同桩型的钻孔灌注桩进行竖向静载荷试验,对2种桩型的竖向承载力、桩身轴力、桩侧摩阻力进行对比分析研究.研究结果表明,扩径桩能够提高单桩承载力、减小桩体沉降,而扩径阻力在荷载传递中起关键作用,成为荷载传递中的主要途径之一.
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| 关 键 词： | 大直径 扩径桩 荷载试验 荷载传递机理 侧摩阻力 |
Contrastive experimental study between expanded diameter piles and equal diameter piles |
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| YANG Guo-lin,CHEN Si-hua,LIN Yu-liang.Contrastive experimental study between expanded diameter piles and equal diameter piles[J].Journal of Railway Science and Engineering,2009,6(2). |
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| Authors: | YANG Guo-lin CHEN Si-hua LIN Yu-liang |
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| Institution: | School of Civil and Architectural Engineering;Central South University;Changsha 410075;China |
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| Abstract: | The pile with expanded diameter is a new kind of pile which has the advantages of high bearing capacity and little subsidence.Because of the differences of the diameters,research on the load transfer mechanism is difficult.The research on the pile with expanded diameter is limited to the pile model test and finite element analysis.The testing information,and contrasted distributing-characteristic of shaft force and lateral friction of the pile of the two different pile types were analyzed.The working proces... |
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| Keywords: | large diameter pile with expanded diameter static loading test loading transfer mechanism lateral friction force |
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