【摘要】 为研究竹筋格栅加筋黄土的界面特性，本文开展了9组大型直剪试验，分别探究筋土界面特性受加筋类型、填土压实度、格栅网口尺寸的影响，并对其影响机理进行分析。结果表明：当剪切位移较小时，竹筋格栅加筋黄土界面剪切应力随剪切位移的增加逐渐增大并达到峰值，随着剪切位移进一步增大，界面剪切应力开始下降并趋近于一个稳定的残余应力；竹筋格栅的加筋作用使土体的黏聚力和内摩擦角均有所提升，且提升效果优于土工格栅；竹筋格栅加筋黄土界面抗剪强度随填土压实度的增大而增大；存在一个最佳格栅网口尺寸，使界面抗剪强度最大。成果可为竹筋格栅加筋黄土的工程应用提供参考。更多还原

【Abstract】 In order to study the interface properties of loess reinforced with bamboo geogrid, 9 sets of large direct shear tests were conducted to investigate the effects of reinforcement type, grids mesh size and fill compaction on the interfacial properties of reinforced loess, and to analyze the mechanism of their effects. The results show that when the shear displacement is small, the interfacial shear stress increases gradually with the increase of shear displacement and reaches the peak value, and with the further increase of shear displacement, the interfacial shear stress starts to decrease and tends to a stable residual stress; the reinforcing effect of bamboo geogrid increases the cohesion and internal friction angle of the soil, and the enhancement effect is better than that of geogrid. The interface shear strength increases with the increase of fill compaction; there exists an optimal grid mesh size to maximize the interface shear strength. This paper compares the reinforcing effect of bamboo geogrid and geogrid on loess and provides a reference for the engineering application of bamboo reinforced grating on loess.更多还原