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Settlement evaluation of soft clay reinforced with stone columns using the equivalent secant modulus

لكلمات الدالة : نسبة التسوية ، ستون الأعمدة ، طريقة العناصر المحدودة ، منطقة الاستبدال في المئة ، أي ما يعادل معامل القاطع

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Abstract

A method is proposed to evaluate settlement of soft clay reinforced with stone columns. Finite element analyses were carried out using 15-noded triangular elements with PLAXIS. A drained analysis was carried out using Mohr–Coulomb’s criterion for soft clay, stones, and sand. The stress due to column installation has been considered in the analysis. At the interface between the stone column and soft clay, interface elements have been used. The settlement ratio (SR) of the soil has been estimated using the equivalent secant modulus. The results are compared with those available in the literature, and the advantages of the numerical analysis were highlighted. Based on the results of this analysis, the SR decrease with compaction surrounding soft soil, but decrease of SR is mainly due to a stiffer column material in soft clay.

مجردة

ويقترح طريقة لتقييم تسوية الطين الطري معززة مع الأعمدة الحجرية. تحليلات العنصر المحدود نفذت باستخدام 15 – العقدة العناصر الثلاثية مع.PLAXIS ويشير تحليل استنزفت نفذ باستخدام موهر - كولومب معيارا لينة الطين والحجارة والرمال. الإجهاد بسبب تركيب عمود تم النظر في التحليل. في الواجهة بين العمود الحجر والطين الطري، عناصر واجهة قد استخدمت. النتائج العددية قد أظهرت أن نسبة التسوية (SR) للتربة قدرت باستخدام معامل يعادل القاطع. وتتم مقارنة النتائج مع تلك المتاحة في الأدب والمزايا التي تتمتع بها التحليل العددي وسلط الضوء. استنادا إلى نتائج هذا التحليل ، فإن الانخفاض SR مع انضغاط التربة المحيطة بها لينة، ولكن بانخفاض قدره SRويرجع ذلك أساسا إلى صلابة المادة العمود في الطين الطري.

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Authors and Affiliations

  1. Department of Civil Engineering, Babol University of Technology, P.O. Box 484, Babol, Iran

    A. Zahmatkesh & Asskar J. Choobbasti

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  1. A. Zahmatkesh
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  2. Asskar J. Choobbasti
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Correspondence to Asskar J. Choobbasti.

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Zahmatkesh, A., Choobbasti, A.J. Settlement evaluation of soft clay reinforced with stone columns using the equivalent secant modulus. Arab J Geosci 5, 103–109 (2012). https://doi.org/10.1007/s12517-010-0145-y

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  • DOI: https://doi.org/10.1007/s12517-010-0145-y

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