依托黄土高原地区典型城西环路高填方路堤工程,对高填方路堤施工后沉降进行长周期变形监测和系统分析,并采用5种理论沉降预测模型进行回归对比分析.研究结果表明:采用半填半挖的高填方路堤,填土深度较大的路肩区域土体沉降均大于相应深度行车道区域土体沉降,沉降周期经过11个月后才趋于稳定;受原地形横坡较陡和回填厚度大的影响,路肩区域表层土体沉降明显较大;由于路堤冻胀影响,导致了路堤出现累计沉降出现降低的阶段性反常现象;指数理论沉降预测模型能更好地反映黄土高原地区高填方路堤的工后沉降变化规律,可以为类似工程科学合理的预测工后沉降提供参考.%Based on the typical loess plateau West Loop high emban km ent engineering,the deformation monitoring and analysis of system of long period construction settlement of high fill emban km ent,and using 5 kinds of theory of settlement prediction model by regression analysis.The results show that the high emban km ent is cut and fill,fill a greater depth of settlement of soil shoulder areas were larger than those of the corresponding depth Lane area of the soil settlement,the settlement period after 11 months after the original terrain tends to be stable;cross slope is steep and backfilling effect of big thickness,shoulder region soil surface settlement is significantly larger;because the emban km ent frost heaving effect,caused the emban km ent settlement stage to reduce the abnormal phenomenon;prediction model can better reflect the high emban km ent in Loess Plateau region industry changes after the settlement index theory,can provide reference for similar engineering project settlement forecast after scientific and rational.
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