中文摘要：

首先介绍了土工格栅处理桥头路堤的工作机理.根据人体对行车时竖向加速度的要求,对路桥搭接处路堤的沉降控制指标进行了探讨,确定了保证行车舒适性的台背处理过渡段的长度.假定沉降曲线为圆弧线且格栅与土界面为库伦摩擦,对路桥搭接处采用土工格栅处理时筋材的受力进行了理论分析,得到了格栅轴向拉力计算的解析表达式,并通过数值模拟及实例对其进行了验证.

英文摘要：

The mechanism of the reinforced bridge approach embankment with geogrid is firstly introduced.According to the requirements of vertical acceleration that human body travels with,the settlement requirements of bridge approach are discussed and the transition section length of reinforced embankment for comfortable driving is determined.The arc assumption is made to describe the settlement curves and the Coulomb friction is used to model the interface characteristic between geogrid and soil.The stress of geogrid reinforcing the embankment is studied at last,the analytical expression to calculate the axial tension forces of the geogrid is obtained,and it is verified by the numerical simulation and practical project.