The DMT - σ h c Method for Piles Driven in Clay

The DMT - σ h c Method for Piles Driven in Clay
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粘土打桩的 DMT - σ h c 方法

DOI:
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发表时间:
1986
期刊:
影响因子:
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通讯作者:
B. Taddei
B. Taddei
中科院分区:
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文献类型:
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作者:
S. Marchetti;G. Totani;R. Campanella;P. Robertson;B. Taddei

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本文提出了一种基于 S. Marchetti 平板膨胀计试验 (DMT) 确定的 sigma //h'c(再固结结束时界面处的水平有效应力)来评估粘土中桩的极限表面摩擦力 f//s 的试验方法。本文说明了使用标准 DMT 设备根据膨胀计测定 sigma //h'c 的方法,并对在各种土壤类型中获得的许多 sigma //h (t) “再固结”曲线进行了评论。本文还描述了所提出的方法预测的 f//s 与全尺寸桩荷载试验确定的 f//s 之间的比较。
This paper presents a tentative method for evaluating the limiting skin friction f//s for piles driven in clay based on sigma //h'c (horizontal effective stress at the interface at the end of the reconsolidation) determined by the S. Marchetti flat plate dilatometer test (DMT). This paper illustrates determinations of sigma //h'c against the dilatometer by using the standard DMT equipment and comments on a number of sigma //h (t) 'reconsolidation' curves obtained in various soil types. The paper also describes a comparison between f//s predicted by the proposed method and f//s determined from full scale pile load tests.