基于D-P本构模型的某公路高填方路基沉降规律研究

高填方路基由于填筑高度大，控制沉降变形一直是工程难点，以贵州某高速公路4级高填方路基为依托，选取典型断面采用Abaqus软件建立计算模型，然后应用D-P本构关系对不同填高进行沉降变形模拟，以获取相应的沉降规律。研究结果表明:路基和地基的最大沉降量均随填筑高度增加而增大；路基中部沉降量最大，并向两侧逐渐降低，整体呈“U”性状。

Research on Settlement Law of A Highway High-fill Subgrade Based on D-P Constitutive Model

High-fill subgrade due to large filling height has a trouble to control the settlement deformation. Based on the 4-grade high-fill subgrade along a highway in Guizhou, the typical section was selected herein to establish a calculation model with Abaqus software and, by use of D-P constitutive relation, the settlement deformation in different filling height was simulated in order to obtain the corresponding rules. The result shows that, both the subgrade and the foundation have the maximum settlement increased with the filling height; the settlement in the middle of the subgrade is largest, and then decreases gradually to both sides, showing a U shape as a whole.