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南京江北滨江大道工程路基为高填方吹填砂路基,属于“堤路”结合工程。本文主要研究新填路基对老堤的影响以及新老堤的差异沉降控制指标。论文首先根据工程的特点,选取典型工程路段作为试验路段,并选取两个断面,对路基填筑过程中的沉降变形进行了监测;其次,根据地质情况对路基的沉降变形分别采用压缩系数法、三点法和有限元法进行了计算校核,通过对计算结果与现场监测结果进行对比分析,验证并完善了高填方吹砂路基的软土地基处理设计,从而确定合理的施工工艺,指导工程施工。
Nanjing Jiangbei Riverside Road subgrade is filled with high fill filling sand embankment, belonging to “embankment ” combined with the project. This paper mainly studies the influence of new embankment on the old dike and the differential settlement control index of the old dike. Firstly, according to the characteristics of the project, the typical engineering road sections are chosen as the test sections, and two sections are selected to monitor the settlement deformation during subgrade filling. Secondly, according to the geological conditions, Three-point method and finite element method were used for calculation and verification. Through comparative analysis of calculation results and on-site monitoring results, the design and treatment of soft soil foundation for high-filled blown sand subgrade were verified and improved, so as to determine reasonable construction technology and guidance Construction.