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根据路基沉降现场监测资料,分别运用双曲线配合法和基于双曲线法的分级填筑路堤沉降预测法对两个不同路基处理措施断面路基土的最终沉降量进行预测。研究结果表明传统双曲线配合法的路基沉降量预测值比较接近实际的监测值,误差百分比较小;并且计算模型简单,工程适用性强;而分级填筑沉降预测法可以分阶段研究不同填筑时间段的沉降量以及固结度,更有利于了解各级路基填筑的沉降固结情况,可准确预测实际铺设道路时间。路基沉降预测方法的选用需根据实际研究内容进行选择。
According to the monitoring data of subgrade settlement, the final subsidence of subgrade soil under two different subgrade treatment measures are predicted respectively by hyperbolic matching method and hierarchical embankment settlement prediction method based on hyperbola method. The results show that the prediction value of roadbed settlement by traditional hyperbolic matching method is relatively close to the actual monitoring value, the error percentage is small; and the calculation model is simple and the engineering applicability is strong; while the grading landfill settlement forecasting method can study the different filling The time of settlement and the degree of consolidation, more conducive to understanding the subgrade filling at all levels of settlement and consolidation, can accurately predict the actual laying of roads time. The selection of subgrade settlement prediction method should be based on the actual research content.