论文部分内容阅读
本文介绍了土包砂路基在石安高速公路O—L连接线中的应用,从土包砂路基的使用条件及优势、施工工艺、检测及施工质量控制要点等方面做了阐述,旨在为其他高速公路的同类型路基提供一些参考。 土包砂路基是指路基两侧一定宽度和顶面一定厚度用具有一定塑性指数的土填筑,中部用砂填筑成型的路基。在石安高速公路O—L连接线项目施工中,针对线路地处石家庄市郊区,人均耕地少且多为菜地,买土困难的实际情况,经过方案比选论证,决定改变原土路基为土包砂路基,全线1140000m~3填方变更后填土仅350000m~3,填砂790000m~3,节约耕地790亩。虽然土包砂路基
This paper introduces the application of soil-packed sand embankment in O-L connecting line of Shi-An Expressway. It elaborates the conditions of use and advantages of soil-packed sand embankment, construction technology, inspection and construction quality control points, Other types of highway subgrade provide some reference. Soil-packed sand embankment refers to a certain width of the embankment on both sides and a certain thickness of the top surface with a certain plasticity index of the earth filled with sand filling the middle of the roadbed. In the project construction of O-L connecting line of Shijian Expressway, in view of the fact that the line is located on the outskirts of Shijiazhuang City, the per capita cultivated land is little and mostly vegetable land, the difficulty of buying land is determined. After the program comparison and demonstration, it is decided to change the original subgrade Soil-filled sand embankment, the entire line 1140000m ~ 3 fill change after filling only 350000m ~ 3, sand fill 790000m ~ 3, saving 790 acres of arable land. Although soil bag sand embankment