| 超长桩桩周土软化对其承载力的影响研究 |
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| 引用本文： | 陈科平,彭振斌,何忠明.超长桩桩周土软化对其承载力的影响研究[J].矿业研究与开发,2006,26(6):39-41,44. |
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| 作者姓名： | 陈科平 彭振斌 何忠明 |
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| 作者单位： | 中南大学,地学与环境工程学院,湖南,长沙,410083 |
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| 摘 要： | 分析了超长桩的荷载传递机理及蠕变性降低土体强度的原因,以开尔文模型为桩周土的流变模型,推导了孔壁水平地应力随时间变化的公式。探讨了超长桩桩周土软化对其承载力的影响。工程实例表明,桩周土软化对超长桩的承载力具有不可忽视的影响。
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| 关 键 词： | 超长桩 桩周土 流变性 成桩时间 Laplace变换 |
| 文章编号： | 1005-2763（2006）06-0039-03 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005-11-28 |
Study of the Effect of Softening of Soil around Super-long Pile on Its Bearing Capacity |
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| Chen Keping,Peng Zhenbin,He Zhongming.Study of the Effect of Softening of Soil around Super-long Pile on Its Bearing Capacity[J].Mining Research and Development,2006,26(6):39-41,44. |
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| Authors: | Chen Keping Peng Zhenbin He Zhongming |
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| Affiliation: | School of Geoscience and Environment Engineering, Central South University, Changsha, Hunan 410083, China |
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| Abstract: | The transfer mechanism of load and the reasons of soil strength decrease caused by creep are analyzed.Meanwhile,the formula of horizontal geostress of the hole with the time is derived based on the creep model of Kenvel Model.The effect of softening of soil around super-long pile on its bearing capacity is discussed.An example given in the paper indicates that the effect of softening of soil around super-long pile on its bearing capacity can not be neglected. |
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| Keywords: | Super-long pile Soil around pile Creep Finish time Laplace exchange |
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