Comparative analyses of large diameter bored piles using international codes

DFI Journal - The Journal of the Deep Foundations Institute Pub Date : 2014-04-01 DOI:10.1179/1937525514Y.0000000001

M. El Gendy, I. A. El-Arabi, M. Kamal

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引用次数: 8

Abstract

Abstract This paper presents a series of comparisons of the load settlement behaviors of single large diameter bored piles, for two international codes (, 1990, and ) in addition to the Egyptian code (). The ultimate bearing capacities calculated by those codes for 38 pile case studies located in the Nile Delta and Port Said regions in Egypt are evaluated by the modified method. The main objective of this research is to compare the performance of the Egyptian code design methodology for large diameter bored piles, with the other international codes. Extensive comparisons are made between the calculations of the different codes regarding the total ultimate pile load as well as the individual contributions of the tip and skin resistances. Finally, an empirical simplified load settlement model deducted from code calculations of the ultimate load of large diameter bored piles is proposed. This model could simplify the analysis of piled raft as it can easily predict the pile settlement. The study assured that the pile load test is an irreplaceable process to estimate the ultimate pile capacity.

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大直径钻孔灌注桩与国际规范的对比分析

摘要本文对大直径钻孔灌注桩的单桩荷载沉降特性进行了一系列比较，比较了两个国际规范(1990和)和埃及规范()的荷载沉降特性。对位于埃及尼罗河三角洲和塞得港地区的38个桩例进行了修正后的极限承载力计算。本研究的主要目的是比较大直径钻孔灌注桩的埃及规范设计方法与其他国际规范的性能。对不同规范计算的桩总极限荷载以及桩顶阻力和表皮阻力的个别贡献进行了广泛的比较。最后，从规范计算中推导出大直径钻孔灌注桩极限荷载的经验简化荷载沉降模型。该模型能较好地预测桩的沉降，简化了桩筏的分析。研究表明，桩荷载试验是估算桩极限承载力不可替代的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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DFI Journal - The Journal of the Deep Foundations Institute

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