水泥稳定土路床对路面结构的影响分析

依托某在建高速公路典型路段水泥稳定土路床，通过现场检测和理论计算，分析路床采用水泥稳定处治后对路基回弹模量和路基路面结构性能的影响。结果表明:路床采用水泥稳定处治后，路基顶面弯沉代表值在80～100（0.01 mm）范围，随着路基模量的逐渐增加，沥青混合料层层底最大拉应变增大，基层和底基层的层底最大拉应力减小，路面结构的疲劳寿命增加。建议水泥稳定土路床路基回弹模量取值范围为120～180 MPa。

Influence of Cement Stabilized Soil Roadbed on Pavement Structure

Based on the cement stabilized soil roadbed of a typical section of the highway under construction, through on-site testing and theoretical calculations, the impact of cement stabilization treatment on the roadbed's elastic modulus and subgrade pavement structure performance has been analyzed. The results show that, the representative value of the top surface deflection of the roadbed has been basically in the range of 80~100 (0.01 mm) after such treatment. With the gradual increase of subgrade modulus, the maximum tensile strain at the bottom of the asphalt mixture layer increases, the maximum tensile stress of the base layer and the bottom of the base layer decreases, and the fatigue life of the pavement structure increases. It is recommended that the modulus of rebound modulus of cement stabilized soil roadbed is 120~180 MPa.