Improved radial consolidation in soft clay using pervious concrete piles

IF 1.7 4区工程技术 Q3 ENGINEERING, GEOLOGICAL Proceedings of the Institution of Civil Engineers-Geotechnical Engineering Pub Date : 2022-08-08 DOI:10.1680/jgeen.22.00046

Umanath Umaiyan, K. Muthukkumaran

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引用次数: 1

Abstract

This paper explores the efficacy of a pervious concrete pile (PCP) in accelerating the rate of consolidation in unconsolidated soft clay deposits. A series of laboratory consolidation tests were performed on the pervious concrete pile, sand drains, and stone columns in two different soft clay soils (CI & CH), and their consolidation characteristics were compared. A novel annular setup was utilized to determine the consolidation characteristics of all three techniques employed. An extensive enhancement in consolidation characteristics like the coefficient of compressibility and coefficient of consolidation was observed when PCP was employed compared to sand drains and stone columns. Enhancement in compression index for PCP implied a compelling scope for accelerating the radial consolidation from surrounding soil, which was lesser in the case of stone columns and comparatively lesser in the case of sand drains. The rate of consolidation in the radial direction was observed in both CI and CH soils when PCP was employed. Perhaps, acceleration in consolidation was predominant in CH soil rather than CI soil.

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透水混凝土桩改善软土径向固结

本文探讨了透水混凝土桩(PCP)在加速松散软粘土沉积固结速度方面的作用。在两种不同软粘土(CI & CH)中对透水混凝土桩、砂土排水管和石柱进行了一系列室内固结试验，并比较了它们的固结特性。采用了一种新型环空装置来确定所采用的三种技术的固井特性。与砂土排水管和石柱相比，采用PCP时，压缩系数和固结系数等固结特性得到了广泛的增强。PCP压缩指数的增强意味着加速周围土壤径向固结的显著范围，在石柱的情况下较小，而在沙渠的情况下相对较小。采用PCP时，CI土和CH土的径向固结速率均有所变化。也许，加速固结在CH土而不是CI土中占主导地位。

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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来源期刊

Proceedings of the Institution of Civil Engineers-Geotechnical Engineering 工程技术-地球科学综合

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

3 months

期刊介绍： Geotechnical Engineering provides a forum for the publication of high quality, topical and relevant technical papers covering all aspects of geotechnical research, design, construction and performance. The journal aims to be of interest to those civil, structural or geotechnical engineering practitioners wishing to develop a greater understanding of the influence of geotechnics on the built environment.