Assessment of reinforced embankment on soft soil with PET and PP Geotextile

International Journal of Civil and Structural Engineering Pub Date : 2012-02-23 DOI:10.6088/IJCSER.00202030011

J. Vashi, A. Desai, C. Solanki

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引用次数: 5

Abstract

A parametric study is carried out to investigate the applicability of limit equilibrium method for analyzing reinforced embankment on soft soil in this paper. The effect of vertical spacing of geotextile layers, slope inclination, and tensile strength of PET (Polyester) and PP (Polypropylene) geotextile behavior on reinforced flyash and clay mixed embankment, over a soft clay layer is studied. For present investigation study, a 8 m high embankment with 20 m crest width and slopes of 58°, 64°, 72°, and 78° are considered. Analysis was performed using the GEO5 – slope stability software version 12 after modeling the above standard geometry. Results divulge that use of full length of geotextile covering whole width of embankment can increase factor of safety (F.S) at steeper slope inclination. Also decreasing the slope inclination and vertical spacing of geotextile gives safer designs. From this study it is seen that reinforced embankment with PET geotextile gives economical and safe design, compared to PP geotextile when the creep phenomenon is considered as a governing factor.

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PET和PP土工布加筋软土地基路堤评价

对极限平衡法在软土地基加筋路堤分析中的适用性进行了参数化研究。研究了土工布层的垂直间距、坡度、PET(聚酯)和PP(聚丙烯)土工布的抗拉强度对软粘土层上加筋粉煤灰和粘土混合路堤性能的影响。在本次调查研究中，考虑了8 m高、20 m波峰宽、58°、64°、72°和78°坡度的路堤。在对上述标准几何图形建模后，使用GEO5 -边坡稳定性软件版本12进行分析。结果表明，在坡度较大的情况下，采用全长覆盖路堤全宽的土工布可以提高路堤的安全系数。减小土工布的斜度和垂直间距也使设计更加安全。研究结果表明，在考虑蠕变影响因素的情况下，PET土工布加固路堤比PP土工布加固路堤更经济、安全。

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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International Journal of Civil and Structural Engineering

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