含水量对筋土界面特性影响的直剪试验研究

Direct Shear Test Research on Influence of Water Content on Reinforced Soil Interface Characteristic

通过对不同填土含水量的筋土界面直剪试验研究,分析不同含水量对筋土界面摩擦系数的影响,得出筋土界面摩擦系数受填料含水量的影响非常明显,填土含水量越高,界面摩擦系数越小。施工时,填土含水量要严格控制在最佳含水量或稍低于最佳含水量。另外,在工程设计施工中,应重视路堤的排水设计和施工,避免路堤大量渗水。

By performing the direct shear test research on reinforced soil interface with different water contents in filling soil and analyzing the influence of different water contents on frication coefficient of reinforce soil interface, this paper draws a conclusion that the friction coefficient of reinforced soil interface is largely influenced by water content in filling materials,the higher the water content,the smaller the interface friction coefficient. During construction,the water content in filling soil shall be strictly controlled equal to the optimal water content or slightly lower than it.In addition,the embankment drainage design and construction shall be taken into account so as to avoid large amount of water leakage from the embankment in project design and construction.