Comparison and Selection of Subgrade Filling Schemes for Jingzhou City North Expressway
In order to solve the problem of shortage of subgrade fill and shortage of land for landfill of construction waste in Jingzhou City North Expressway,from the design point of view,the subgrade filling with millions of demands is compared and analyzed.This article investigated the soil sources and local river sand conducted physical tests,clarified the selection principles of fillers,and analyzed their usability.A technical and economic comparison of filler combination solutions was made from the aspects of material properties,engineering requirements,transportation conditions,mining conditions and environmental protection.The subgrade filling test was carried out on construction solid waste generated by demolition.The result shows that the #6 gravelly soil-based filler combination solution is the best,for it promises the explicit construction period and the excellent filling quality.Even if it is used in the entire project,the allowable post-construction subgrade deformation can meet the specifications.According to the technical requirements and acceptance standards for the subgrade filling with construction solid waste summarized in this article,the actual utilization rate of construction solid waste reaches 95％.The problem of shortage of fill and shortage of land for construction waste landfill have been effectively solved.
万方数据
维普
