土工格栅加固港区道路基层效果分析

我国华南港区,高温多雨,因荷载轮压很大造成路面不同程度的破坏。港区道路基层强度承载能力决定港区道路使用性能。考虑港区深软土地基,基于塑性理论,运用有限元软件模拟分析土工格栅加固港区道路基层效果。分析研究表明,采用有限元方法模拟土工格栅加固港区基层的结果与试验段结果相对应;弯沉与极限荷载成反比关系,弯沉值小,极限荷载大,表明土工格栅能提高港区基层结构承载能力,并且,土工格栅放置位置越接近面层,加固效果越好。

Effect on pavement base reinforced with geogrid

Due to high temperature,rainfall and large wheel pressure load,damages occur in port roads of south China area.The bearing capacity of pavement base determines the performance of pavement in port.Considering the deep soft properties of soil,the pavement base reinforced with geogrid is simulated with finite element method.The result shows that the results of the pavement base reinforced with geogrid simulated by finite element method correspond with the results of field section;There is an inverse relationship between the deflection and the ultimate load.The smaller the deflection,the larger the ultimate load.It indicates that geogrid is capable of improving the bearing capacity of pavement base,and the effect is better when the grogrid is placed near the surface layer.