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Some Aspects of the Performance of Open and Closed-Ended Piles

机译：开口桩和封闭桩性能的若干问题

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摘要

A theoretical study is reported of the stress and strength changes in clay due to the installation of driven tubular piles with open and closed ends. Clay is idealized as a work hardening elastoplastic material. Pile installation is modelled as the expansion of a long cylindrical cavity. Numerical results are presented showing how the stress and strength changes in the soil are affected by (a) the consolidation history of the soil prior to pile driving and (b) the amount of soil displaced by the pile. It is shown that the final shaft capacity of a closed ended pile driven into a particular clay deposit may be of the order of 25% greater than that for a similar but open-ended pile.

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