A study of the effect of driving on pre‐bored piles
A study of the effect of driving on pre‐bored piles
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DOI：
10.1002/nag.267
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发表时间：
2003-02
影响因子：
4
通讯作者：
M. Mabsout;S. Sadek
中科院分区：
文献类型：
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作者：
M. Mabsout;S. Sadek
开发了打桩分析的有限元模型，并用于研究预钻孔桩的行为，然后将其打入最后1.25或2.25 m至最终设计深度。该研究是针对饱和粘土的情况进行的。该模型跟踪桩到土壤中的渗透，并容纳大变形。本研究中粘土的非线性行为是使用边界面塑性模型预测的，适用于各向同性粘性土。详细介绍了三维数值模拟和计算方案。一个显着的差异被观察到在打桩过程中的桩位移，并在桩尖的计算土壤阻力，特别是在最早的驱动阶段。无论打入1.25 m还是2.25 m，均未检测到预钻孔桩之间沿桩身沿着土桩界面的土壤阻力差异。版权所有© 2002年约翰威利父子有限公司。
A finite element model for pile‐driving analysis is developed and used to investigate the behaviour of pre‐bored piles, which are then driven the last 1.25 or 2.25 m to their final design depth. The study was conducted for the case of saturated clays. The model traces the penetration of the pile into the soil and accommodates for large deformations. The non‐linear behaviour of the clay in this study is predicted using the bounding‐surface‐plasticity model, as applied to isotropic cohesive soils. The details of the 3‐D numerical modelling and computational schemes are presented. A significant difference was observed in the pile displacement during driving, and in the computed soil resistance at the pile tip, particularly at the earliest driving stages. No difference in soil resistance at the soil pile interface along the pile shaft was detected between the pre‐bored piles whether driven 1.25 or 2.25 m. Copyright © 2002 John Wiley & Sons, Ltd.