格栅增强级配碎石单轴强度试验分析

Investigation of Uniaxial Compressive Testing on Grid Reinforced Graded Crushed Aggregate

采用单轴压力试验分析格栅对沥青混合料级配碎石的加筋增强作用。试验结果表明格栅对沥青混合料的集料骨架可起到约束作用,从而提高其抗剪性能和承载力。格栅网孔阻碍集料水平移动,提高了集料间的内摩擦力,是承载能力提高的主要原因,其作用机理可用摩尔-库伦强度理论予以解释。

The uniaxial compressive testing was used to investigate the reinforcement effect of grid on graded crushed aggregate. The test results showed that the grid had confining effect of the aggregate skeleton, which improves the shear resistance and load bearing. The grid restricted the horizontal movements of aggregate particles, thus increases the friction between aggregates. This results in the improvement of loading bearing. The mechanism can be well ex- plained by using More-Coulomb strength theory.