土工格栅处理软土路基的有限元分析及应用研究

Application Study and Finite Element Analysis of Reinforcing Geogrids Applied in Soft Roadbed

采用有限元软件PLAXIS,对土工格栅处理软土路基的变形特性及其影响因素进行了研究,分析表明,土工格栅对减小软基侧向位移、降低土体应力水平以及提高路基路堤安全系数有明显效果。通过在江苏某高速公路软土路段中的应用,并对路基侧向位移及沉降的实测研究,掌握了经土工格栅处理后,软土路基的基本变形规律。

According to the finite element analysis, the paper studyes the displacement characteristics and effects of reinforcement with geogrids. The results show, that geogrid can minish the lateral displacement, reduce the soil stress and improve the safety factor of roadbed. According to the research of displacement in practice, the paper shows the rule of displacement.