路基路面课程设计.doc

一、设计资料
广东省某二级公路，原路面宽12 m，土路肩2*3.0m，根据建设方的要求，改建后为一级路面的宽度为42 m，硬路肩2*2.5 m，双向8车道，近期交通量如表一所示，交通量年增长率为10%，该路段路基属于干燥类型，在不利季节（干季）用黄河JN150车测得的路段30个测点的弯沉值如表2，测定时路表温度与前5H平均气温之和为76.05`C，原路面结构如图1所示。土基回弹模量为40MPa,基层、底基层选用6%水泥稳定石粉（E=600MPa，劈裂强度为0.6MP，弯拉回弹模量为2800MPa）、4%水泥稳定石粉（E=350MPa，劈裂强度为0.4MPa，弯拉回弹模量为1500MPa）。
First, design data
Secondary roads in Guangdong Province this route, voluminous 12 m, soil shoulders 2 * 3.0m, according to the requirements of Party building, converted to a road width of 42 m, hard shoulder 2 * 2.5 m, two-way 8-Drive, the recent as shown in Table 1 Traffic volume, traffic growth rate of 10%, the road subgrade is dry and the type of unfavorable season (dry season) in the Yellow JN150 car measured 30 sections measuring points Deflection Table 2 to determine when the road surface temperature and pre-5H and the average temperature of 76.05 `C, the original pavement structure shown in Figure 1. Subgrade modulus is 40MPa, the grassroots, sub-base use of 6% cement stabilized powder (E = 600MPa, splitting strength 0.6MP, bending back elastic modulus 2800MPa), 4% cement stabilized powder (E = 350MPa , splitting strength of 0.4MPa, bending back elastic modulus is 1500MPa).