| 软土地基中CFG桩单桩施工引起的超静孔隙水压力 |
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| 引用本文： | 吉同元,胡银宝,刘松玉,朱向阳.软土地基中CFG桩单桩施工引起的超静孔隙水压力[J].公路交通科技,2006,23(8):53-56. |
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| 作者姓名： | 吉同元 胡银宝 刘松玉 朱向阳 |
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| 作者单位： | 1. 东南大学,岩土工程研究所,江苏,南京,210096
2. 连云港高速公路建设指挥部,江苏,连云港,222200 |
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| 摘 要： | 当采用振动沉管法施工CFG桩时,沉管的振动和挤压效应将对桩周土产生极大的扰动,对饱和软粘土则会引起很大的超静孔隙水压力。通过某工程现场CFG桩施工所观测的桩周超静孔压数据的分析和整理,系统研究了单桩施工产生的超静孔压的发生发展过程,分析了超静孔压在桩周径向及深度上的分布,探讨了超静孔压的消散规律,以期为优化这类桩的施工以及合理桩间距的确定提供现场实测资料。
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| 关 键 词： | 振动沉管 CFG桩 超静孔隙水压力 饱和软粘土 |
| 文章编号： | 1002-0268(2006)08-0053-04 |
| 收稿时间： | 2005-08-09 |
| 修稿时间： | 2005年8月9日 |
Excess Pore Pressure Induced by Single CFG Pile Driven into Soft Ground |
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| JI Tong-yuan,HU Yin-bao,LIU Song-yu,ZHU Xiang-yang.Excess Pore Pressure Induced by Single CFG Pile Driven into Soft Ground[J].Journal of Highway and Transportation Research and Development,2006,23(8):53-56. |
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| Authors: | JI Tong-yuan HU Yin-bao LIU Song-yu ZHU Xiang-yang |
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| Institution: | 1. Institute of Geoteehnieal Engineering, Southeast University, Jiangsu Nanjing 210096, China; 2. Lianyungang Bureau of Hihgway Construction, Jiangsu Lianyungang 222200, China |
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| Abstract: | When CFG pile is driven by pipe with vibration,pipe's librations and expansion effect will have a great disturbance on soils around pile,for saturated soft clay,such progress will induce huge excess pore pressure.Through analyzing the data of excess pore pressure induced by driving a single CFG pile,excess pore pressure's development process is presented in detail,excess pore pressure's distribution also is analyzed along depth and distance against the pile,the dissipation pattern of excess pore pressure is probed into,and a datum accumulation for reasonable distance between piles and optimal construction for such CFG pile are discussed. |
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| Keywords: | vibration pile driven CFG pile excess pore pressure saturated soft clay |
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