淡江大學機構典藏:Item 987654321/104653
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    题名: Model tests on geotextile-encased granular columns under 1-g and undrained conditions
    作者: Yung-Shan Hong;Cho-Sen Wu;Yi-Sheng Yu
    关键词: Geotextile;Model test;Encased sand column;Soft clay;Experimental test;Similarity analysis
    日期: 2016-02
    上传时间: 2016-01-06 11:06:10 (UTC+8)
    出版者: Elsevier Ltd
    摘要: This paper investigates the effects of encasement stiffness and strength on the response of individual geotextile encased granular columns embedded in soft soil through model tests. Similarity analysis was first executed to determine the suitable properties of the constituents used in the model tests to ensure that the prototype-scale and model-scale geotextile encased granular columns exhibit comparable behaviour.
    Experimental results show that encasement improves the bearing capability of all modeled sand columns, even when encasement rupture occurs; marked improvement is achieved for sand columns encased with geotextiles of relatively medium to high stiffness. Encasement also restrains the radial strain of the columns significantly. Predominate bulging of the encased sand column occurs in the top 2.5D depth of sand columns encased with low stiffness geotextile, however, sand columns encased with relatively high stiffness geotextile exhibit roughly uniform lateral deformation along the height of the column. The bearing stresses of the encased columns modeled in this study agree well with values predicted by an analytical solution using cavity expansion theory.
    關聯: Geotextiles and Geomembranes 44(1), p.13–27
    DOI: 10.1016/j.geotexmem.2015.06.006
    显示于类别:[土木工程學系暨研究所] 期刊論文

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