An experimental study has been carried out to improve the bearing capacity of soils by using geotextile. In the present study geojute (gunny bags) is used as geotextile, whereas sand is used as soil media. This research presents the results of laboratory load tests on model square footings supported on reinforced sand beds. A total of 32 load tests are conducted to evaluate the effects of single layer reinforcement placed below square model footings. Parameters of testing programme of the research are the depth of reinforcement, the plan area of reinforcement and the footing size. The test results indicated that the maximum gain in ultimate bearing capacity (UBC) of footings on reinforced soil (by using geojute) is found to be increased by a factor of 3.37 as compared to soil without geojute. Also, the optimum size of reinforcement is found to be 3.5B × 3.5B irrespective of the type of reinforcing materials used. The optimum placement position of geotextile is found to be 0.5B from the base of the footing. At low settlement rates, the study on the values of BCR reveals almost the same results with regard to optimum depth and size of reinforcement mentioned above. It is found that with increase in the settlement rate, BCR increases. Also, the improvement in bearing capacity is found to increase with increase in footing size.

中文翻译：

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天然土工布提高土壤承载力

已经进行了通过使用土工织物来提高土壤承载力的实验研究。在本研究中，土黄麻（麻袋）被用作土工布，而沙子被用作土壤介质。这项研究提出了在加筋砂床上支撑的模型方形立脚上进行实验室载荷测试的结果。总共进行了32次载荷测试，以评估置于方形模型基础之下的单层钢筋的效果。研究的测试程序的参数是钢筋的深度，钢筋的平面面积和基础尺寸。测试结果表明，与没有土黄麻的土壤相比，加固土（通过使用土黄麻）上的基础最大极限承载力（UBC）增加了3.37倍。也，无论使用哪种增强材料，最佳增强尺寸为3.5B×3.5B。发现土工布的最佳放置位置是从基础开始的0.5B。在低沉降速率下，对BCR值的研究表明，就上述最佳加固深度和尺寸而言，结果几乎相同。发现随着结算率的增加，BCR会增加。而且，发现承载能力的提高随着立足尺寸的增加而增加。发现随着结算率的增加，BCR会增加。而且，发现承载能力的提高随着立足尺寸的增加而增加。发现随着结算率的增加，BCR会增加。而且，发现承载能力的提高随着立足尺寸的增加而增加。