一、工程概况S238常付线沈丘县城至豫皖交界段改建工程二标K448+008-K459+612.978段,目前该段路况很差,坑槽、网裂、沉陷、臃包很多,部分路段几乎断行,后用灰土碎石对坑槽及水毁路段进行了处理。现在设计情况:设计标准为本项目按二级公路技术标准设计,计算行车速度80公里每小时。设计结构为4+3的沥青混凝土 First, the project profile S238 pay line Shenqiu County to Yu-wan junction reconstruction project two standard K448 + 008-K459 + 612.978 paragraph, the current section of poor road conditions, crater, net crack, subsidence, a lot of packages, some sections Almost broken line, after the use of limestone pit and water damaged road sections were processed. Now the design situation: Design standards for the project according to secondary technical standards for highway design, calculate the driving speed of 80 km per hour. Design the structure of 4 +3 asphalt concrete