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首页> 美国政府科技报告 >Evaluation of the Effect of Synthetic Fibers and Nonwoven Geotextile Reinforcement on the Stability of Heavy Clay Embankments;Final rept. 1 Jan 96-31 Dec 01
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Evaluation of the Effect of Synthetic Fibers and Nonwoven Geotextile Reinforcement on the Stability of Heavy Clay Embankments;Final rept. 1 Jan 96-31 Dec 01

机译：评价合成纤维和非织造土工织物增强对重粘土路堤稳定性的影响;最终评价。 1月1日至7月1日至31日

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摘要

This study evaluates two methods for repairing slope surface failures of clayey soil embankments. One method involves reinforcing the cohesive soils with randomly oriented synthetic fibers; the other method incorporates non-woven geotextiles. The performance of soils reinforced using these two methods was studied in the laboratory and in the field. In the laboratory, a parametric study was conducted to compare the performances of soil and fiber-soil in terms of their shear strengths. Both a large direct shear and a standard triaxial apparatus were used to experimentally evaluate the shear strengths of the reinforced materials. The interface friction between the geotextile fabric and the soil was also evaluated using the large direct shear apparatus. The specimens of soil, fiber-soil, and fabricsoil materials were tested at various moisture contents and confining stresses. Various fiber contents were also used to evaluate their effect on shear strength. The laboratory results indicated that, in the short term, the fiber reinforcement will compensate the loss of soil shear strength caused by the increase in soil moisture content.

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