土石坝体内土工格栅加筋机理研究

Study on mechanism of the reinforcement effect in earth-rockfill dam

采用大型三轴仪对粒组成分不同的两种砾料进行了固结排水试验研究 ,并引入了等效围压的概念 ,对碎石土加筋效果、加筋机理、试验围压、土料性质等因素进行了较全面的分析研究 ,结果表明 :加筋能明显提高碎石土的强度和破坏应变 ,对土的破坏有延滞作用 ,碎石土的加筋效果与围压。

The effects of reinforcement on strength and deformation of soil-gravel are experimentally by using high-pressure large scale triaxial testing facility.The effect of reinforcement decreases as the surrounding pressure increased and in dependent on weathering as well as the stiffness of the gravel. The result shows that the strength and failture strain of the material are greatly elevated and the deformation is reduced due to the effect of reinforcement.