含土工合成材料防裂夹层的水泥混凝土路面沥青加铺层应力分析

Stress Analysis of Asphalt Overlay on Cement Concrete Pavement withAnti-cracking Interlayer Containing Geosynthetics

采用含土工合成材料的沥青加铺层结构形式对旧水泥混凝土路面进行加铺改造,使用有限元法对沥青加铺层结构的车辆荷载应力及温度应力进行力学计算,定量分析了土工合成材料防裂夹层的抗裂机理。结果表明,对于因车辆荷载应力或温度应力形成的反射裂缝而言,土工格栅的抗裂效果都要优于土工布。

The paper adopted asphalt overlay structure containing geosytheties to reform old cement concrete pavement, calculated the load stress and thermal stress of asphalt overlay structure with finite element method and analyzed the anti-cracking mechanism of geosynthetics interlayer. The results show that the anti-cracking effect of geogrids is better than that of geotextile for the anti-crocking caused by load stress or thermal stress.