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通过土体三轴受压条件下的无侧向静止土压力系数和摩尔—库仑定理,将加筋粘土体在三轴受压条件下的总体抗剪承载力分为加筋土体发生侧向变形前的承载力和与土工格栅密切相关的土体发生侧向变形后的承载力两部分进行研究。通过不同含水量下加筋粘土的三轴试验及其所得相关数据,提出了利用加筋土体发生侧向变形后的抗剪承载力与极限抗剪承载力的比值p2随加筋层数的变化情况作为评价加筋效果的重要指标。试验结果表明,当粘性土在最优含水量状态下时,其加筋效果最为显著。
According to the unconfined soil pressure coefficient and Mohr Coulomb theorem, the overall shear capacity of reinforced clay under triaxial compression is divided into four directions: The bearing capacity before deformation and the bearing capacity of soil after lateral deformation which is closely related to geogrid are studied in two parts. Based on the triaxial tests of reinforced clay under different water contents and the data obtained from it, the ratio p2 of shear strength and ultimate shear capacity of reinforced soil with lateral deformation is proposed Changes as an important indicator to evaluate the effect of reinforcement. The experimental results show that when the clay has the optimal water content, the reinforcement effect is the most significant.