Pile Setup in Cohesive Soil. I: Experimental Investigation
Pile Setup in Cohesive Soil. I: Experimental Investigation
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DOI：
10.1061/(asce)gt.1943-5606.0000751
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发表时间：
2013-02
影响因子：
3.9
通讯作者：
K. Ng;M. Roling;S. AbdelSalam;M. Suleiman;S. Sritharan
中科院分区：
文献类型：
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作者：
K. Ng;M. Roling;S. AbdelSalam;M. Suleiman;S. Sritharan
摘要 几十年来，粘性土壤中的桩设置已成为一种众所周知的现象。然而，很少存在系统性的现场调查，以提供开发分析程序所需的数据并将桩设置集成到设计方法中。本文总结了最近完成的对嵌入粘性土壤中的五个全仪器化钢 H 型桩的现场调查，同时另一篇论文讨论了桩设置方法的发展。在现场调查期间，完成了详细的土壤表征、土壤总侧向应力和孔隙水压力的监测、随时间变化的桩动态重击数据的收集以及垂直静载荷试验。重打测量证实，打桩结束后，桩的建立以对数速率发生，并且其发展与测量的孔隙水压力的消散速率密切相关。根据收集的现场数据，得出的结论是，表面摩擦组件（而不是端轴承）对...
AbstractPile setup in cohesive soils has been a known phenomenon for several decades. However, a systematic field investigation to provide the needed data to develop analytical procedures and integrate pile setup into the design method rarely exists. This paper summarizes a recently completed field investigation on five fully instrumented steel H-piles embedded in cohesive soils, while a companion paper discusses the development of the pile setup method. During the field investigation, detailed soil characterization, monitoring of soil total lateral stress and pore-water pressure, collection of pile dynamic restrike data as a function of time, and vertical static load tests were completed. Restrike measurements confirm that pile setup occurs at a logarithmic rate following the end of driving, and its development correlates well with the rate of dissipation of the measured pore-water pressure. Based on the field data collected, it was concluded that the skin friction component, not the end bearing, contrib...