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基于胶新铁路路基沉降监测和预测研究,分析了试验段软弱土路基的实测沉降及其变化规律,并对各断面在通车前后的累积沉降进行对比,研究发现:在路堤自重作用下,路堤各部分土体均表现为沉降变形;线路上碴和铺轨阶段沉降较大;正式通车3个月后,路基在自重和列车动荷载作用下,沉降较大;选用不同的预测方法拟合同一工程的不同阶段,能得到更确切的沉降信息,使之服务于工程需要。
Based on the settlement monitoring and prediction research of the subgrade of Jiaoxin railway, the measured subsidence and variation regularity of the soft soil subgrade in the test section are analyzed, and the cumulative settlement before and after opening of each section is compared. It is found that under the action of the embankment, Some of the soil showed settlement deformation; the ballast on the line and the delamination stage had a large settlement; after 3 months of formal operation, subgrade settlement was larger under self-weight and train dynamic load; different prediction methods were used to fit the same project Different stages, can get more accurate settlement information, make it serve the needs of the project.