普遍荷载作用下颗粒柱加筋软粘土的沉降响应比较

IF 1.3 Q3 ENGINEERING, GEOLOGICAL
V. Sivakumar, B. Solan, M. Moorhead, C. Serridge, S. Tripathy, S. Donohue
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引用次数: 0

摘要

本文研究了用颗粒柱(单个和成组)处理软粘土沉积物的固结和沉降行为。两个Rowe Cell加载室用于对高岭土和当地贝尔法斯特天然河口冲积物(称为“sleech”)的样品进行调查。先对未加筋试件进行试验,再对加筋试件进行单柱和多柱试验。每次测试的测试持续时间在3到4个月之间,具体取决于测试材料和颗粒柱结构。研究了基于一次固结和二次固结的沉降减小因子。研究表明,颗粒柱在缓解一次和/或二次沉降方面的有效性与荷载强度、应力历史和地基蠕变特性直接相关。应力集中比随应力水平的增大而减小。二次固结对应力集中比也有一定的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A comparative settlement response of soft clays reinforced with granular columns subjected to widespread loading
This paper examines the consolidation and settlement behaviour of soft clays deposits treated with granular columns (single and in groups). Two Rowe Cell loading chambers were used to conduct the investigations on samples of kaolin and a local Belfast natural estuarine alluvium called ‘sleech’. Tests were carried out on unreinforced samples and then reinforced samples with single and multiple column configurations. The test duration for each test was between 3 and 4 months, depending on the test material and the granular column configuration. The settlement reduction factors based on primary and secondary consolidation were examined. The study suggests that the effectiveness of granular columns at mitigating primary and/or secondary settlement is directly related to the loading intensity, the stress history and the creep characteristics of the subsoil. It was also found that the stress concentration ratio reduced with the stress level. Secondary consolidation also has some effects on the stress concentration ratio.
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来源期刊
CiteScore
3.10
自引率
8.30%
发文量
54
期刊介绍: Ground Improvement provides a fast-track vehicle for the dissemination of news in technological developments, feasibility studies and innovative engineering applications for all aspects of ground improvement, ground reinforcement and grouting. The journal publishes high-quality, practical papers relevant to engineers, specialist contractors and academics involved in the development, design, construction, monitoring and quality control aspects of ground improvement. It covers a wide range of civil and environmental engineering applications, including analytical advances, performance evaluations, pilot and model studies, instrumented case-histories and innovative applications of existing technology.
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