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A simplified approach for negative skin friction calculation of special-shaped pile considering pile-soil interaction under surcharge 被引量:3

A simplified approach for negative skin friction calculation of special-shaped pile considering pile-soil interaction under surcharge
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摘要 A simplified approach was proposed to analyze the negative skin friction calculation of special-shaped pile considering pile-soil interaction under surcharge. Based on the concentric cylinder shearing theory, considering the changes of pile shape(such as, taper angle and diameters of pile base, etc.), the load-transfer of special-shaped pile was built. The accuracy of the developed simplified approach was verified by numerical simulation model with the same condition. Then, the influence factors, such as, taper angles, the diameter of pile base, surcharge, and pile-soil interface parameters were analyzed and discussed. The results show that the developed simplified approach can calculate NSF of special-shaped pile under surcharge effectively. A limited parametric study indicates that in many practical situations special-shaped piles(such as belled wedge pile shown in this work) offer a design option that is more economical than traditional uniform cross-section piles. A simplified approach was proposed to analyze the negative skin friction calculation of special-shaped pile considering pile-soil interaction under surcharge. Based on the concentric cylinder shearing theory, considering the changes of pile shape(such as, taper angle and diameters of pile base, etc.), the load-transfer of special-shaped pile was built. The accuracy of the developed simplified approach was verified by numerical simulation model with the same condition. Then, the influence factors, such as, taper angles, the diameter of pile base, surcharge, and pile-soil interface parameters were analyzed and discussed. The results show that the developed simplified approach can calculate NSF of special-shaped pile under surcharge effectively. A limited parametric study indicates that in many practical situations special-shaped piles(such as belled wedge pile shown in this work) offer a design option that is more economical than traditional uniform cross-section piles.
出处 《Journal of Central South University》 SCIE EI CAS 2014年第9期3648-3655,共8页 中南大学学报(英文版)
基金 Projects(51278170,U1134207)supported by the National Natural Science Foundation of China Project(B13024)supported by the Program of Introducing Talents of Discipline to Universities,China
关键词 negative skin friction special-shaped pile pile-soil interaction dragload downdrag SURCHARGE 桩土相互作用 阻力计算 异型桩 收费 负摩阻力 剪切理论 模型验证 数值模拟
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二级参考文献35

共引文献105

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