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三峡库区路基沉降变形是公路病害的主要表现形式,超高路堤整体沉降的正确预估是保证路基稳定的前提。文章结合重庆云阳至奉节高速公路奉节东立交V形冲沟超高路堤的施工,运用灰色模型、数值计算和土工离心试验三种方法,对该超高路堤的沉降变形进行了预测或测试,并将所得结果与实测沉降进行对比,得出三种方法在预估V形冲沟超高路堤整体沉降中的适用性。研究成果对类似工程的建设具有一定的借鉴意义。
The settlement of the roadbed in the Three Gorges reservoir area is the main manifestation of the road disease. Correct estimation of the whole subsidence of the embankment is the prerequisite for the stability of roadbed. Combined with the construction of the V-shaped gully embankment at Fengjie East Interchange of Yunyang-Fengjie Expressway, this paper predicts or tests the settlement deformation of the high embankment by using three methods: gray model, numerical calculation and geotechnical centrifuge test, The results obtained are compared with the measured settlement, and the applicability of the three methods in predicting the whole settlement of the V-shaped gully embankment is obtained. The research results have some reference to the construction of similar projects.