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首页> 外文期刊>Geotextiles and Geomembranes >Model studies on circular footing supported on geocell reinforced sand underlain by soft clay
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Model studies on circular footing supported on geocell reinforced sand underlain by soft clay

机译：软土支撑土工格栅加筋砂的圆形基础模型研究。

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摘要

The effectiveness of geocell reinforcement placed in the granular fill overlying soft clay beds has been studied by small-scale model tests in the laboratory. The test beds were subjected to monotonic loading by a rigid circular footing. Footing load, footing settlement and deformations on the fill surface were measured during the tests. The influence of width and height of geocell mattress as well as that of a planar geogrid layer at the base of the geocell mattress on the overall performance of the system has been systematically studied through a series of tests. The test results indicate that with the provision of geocell reinforcement in the overlying sand layer, a substantial performance improvement can be obtained in terms of increase in the load carrying capacity and reduction in surface heaving of the foundation bed. An additional layer of geogrid placed at the base of the geocell mattress further enhances the load carrying capacity and stiffness of the foundation bed. Its beneficial effect decreases with the increase in the height of the geocell mattress. A seven-fold increase in the bearing capacity of the circular footing can be obtained by providing geocell reinforcement along with a basal geogrid layer in the sand bed underlying soft clay.
机译：在实验室中通过小规模模型测试研究了放置在软粘土床上方的粒状填料中的土工格室加固的有效性。通过刚性圆形底座对测试台进行单调加载。在测试过程中测量了基础荷载，基础沉降和填充表面的变形。通过一系列测试，系统地研究了土工格床垫的宽度和高度以及土工格床垫底部的平面土工格栅层的宽度和高度对系统总体性能的影响。测试结果表明，通过在上覆的砂层中提供土工格室加固，可以在提高承载能力和减少基床表面起伏方面获得实质性的性能改善。放置在土工格室床垫底部的土工格栅的另一层进一步增强了基床的承载能力和刚度。它的有益效果随geocell床垫高度的增加而降低。通过在软土下面的沙床中提供土工格室加固以及基础土工格栅层，可以使圆形基础的承载能力提高7倍。

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