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为研究软弱地基上高填方路堤沉降规律,依托某高填方路堤填筑的工程实际,现场测试原地表沉降量、分层沉降量和地表水平位移,并利用有限元软件分析不同填筑高度对地基变形的影响.结果表明:在路堤填土完成后,路堤中心沉降量为44.6cm,路肩处为32.5cm;填土完成后6个月,路堤沉降趋于稳定,沉降分别为59.5cm和47.8cm;工后沉降占沉降的比例分别为25%和32%.路堤填筑过程中,地基软弱土体向外挤出,最大位移发生在地表以下2～4m处,为22.4cm.数值计算结果和实测结果数值上有所差异,但规律一致且差别不大.
In order to study the settlement rule of high fill embankment on soft foundation and rely on the engineering practice of embankment filled with high fill, the on-the-spot surface settlement, stratified settlement and surface horizontal displacement were tested on site. The finite element software The settlement of the embankment is 44.6cm and the shoulder is 32.5cm. After 6 months of filling, the settlement of the embankment tends to be stable with settlement of 59.5cm and 47.8cm respectively.The post-construction settlements accounted for 25% and 32% of the settlement, respectively.During the embankment filling process, the soft soil foundation was extruded outwards and the maximum displacement occurred at 2 ~ 4m below the ground surface, which was 22.4cm. The results and the measured values are different, but the laws are the same with little difference.