极端降雨事件中土工合成材料对减少膨胀的影响

IF 2.3 Q2 ENGINEERING, GEOLOGICAL
Mohit Saily, Ivan Gratchev
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引用次数: 0

摘要

膨胀土在降雨过程中会发生膨胀,对工程结构造成破坏。本文旨在探讨土工合成材料对这类土壤的减胀作用。在模拟降雨条件下,在高塑性活性土上进行了一系列大规模长期土柱试验。非织造土工合成材料结合土工格栅和编织土工合成材料作为主要的土工合成材料,对土体起到加固和排水的作用。所得结果表明,这些土工合成材料并没有提高土壤的加州承载比值。然而,当土工合成材料放置在土体中时,土工合成材料大大减少了土体的总膨胀。目测和试验结果表明,土工合成材料对土体的排水效果较好。这限制了水-土相互作用的时间,从而减少了土壤的总膨胀。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Geosynthetics on Swell Reduction During an Extreme Rainfall Event
Abstract Expansive (reactive) soils can swell during rainfall causing damage to engineering structures. This paper seeks to investigate the effect of geosynthetic material on the swell reduction of such soils. A series of large-scale long-term soil column experiments were conducted on a very high plasticity reactive soil under simulated rainfall conditions. Non-woven geosynthetics combined with geogrid and woven geosynthetics were used as primary geosynthetic material to provide reinforcement and drainage for the soil mass. The obtained results revealed that these geosynthetics did not improve the California Bearing Ratio values of the soil. However, when placed in the soil mass, the geosynthetic materials greatly reduced the total swell of the soil. Visual observations and the experimental data on water content, suction, and vertical displacements indicated that the geosynthetics provided better drainage of the soil mass. This limited the time of water–soil interaction, thus reducing the total swell of the soil.
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来源期刊
CiteScore
4.20
自引率
17.20%
发文量
68
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