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为探讨土工格栅对碎石垫层刚度的影响规律,设计了9种不同工况的垫层,分别进行了模型静载试验,分析了垫层厚度、有无土工格栅、土工格栅层数及铺设位置等因素对碎石垫层及加筋碎石垫层变形的影响。结果表明:垫层厚度的减小能有效地降低地基沉降;在一定荷载范围内,有土工格栅碎石垫层的承载性能要优于无土工格栅碎石垫层;在相同荷载作用下,当垫层厚度相同时,土工格栅层数和铺设位置不同,其碎石垫层的刚度也不同,且存在一个最佳的铺设层数及铺设位置,土工格栅的最佳层数及铺设位置有待进一步研究。
In order to discuss the influence rule of geogrid on the stiffness of gravel cushion, nine kinds of cushion under different working conditions were designed and the static load test was carried out respectively. The thickness of cushion, geogrid with or without geogrid Number and location of pavement and other factors on the deformation of gravel cushion and reinforced gravel cushion. The results show that the decrease of the cushion thickness can effectively reduce the settlement of foundation. The bearing capacity of the geogrid gravel cushion is better than that of the geogrid-less rubble cushion under a certain load range. Under the same load When the cushion thickness is the same, the geogrid layer and laying position are different, and the stiffness of the rubble cushion is also different, and there is an optimal laying layer and laying position, the optimal number of layers of the geogrid and Laying the site for further study.