交通荷载下H-V加筋路堤加筋效果的数值分析

针对交通荷载作用下的水平-竖向（Horizontal Vertical，H-V）加筋路堤，利用有限元软件ABAQUS建立二维模型并对路堤进行显示动力分析.通过动三轴试验，将其结果拟合成应变软化曲线并编入ABAQUS用户子程序，同时，对不加筋、水平加筋和H V加筋3种工况下的路堤变形和应变进行比较.结果表明：在交通荷载作用下，H-V加筋路堤能够显著减小路堤的竖向位移和水平位移；H-V加筋能够控制路堤的不均匀沉降，减小应变，而且较普通的水平加筋效果显著，尤其在水平位移的约束方面.

Numerical Analysis of Embankment Reinforced with H-V Reinforcement under Traffic Loading

In order to study the embankment reinforced with Horizontal-Vertical (H-V) reinforcement under traffic loading, a two-dimensional model was calculated by finite element method (FEM) program ABAQUS using dynamic explicit. According to the result of dynamic triaxial tests, fitting strain softening curve was written into user subroutine in ABAQUS. The deformation and strain of the embankment without reinforcement, with ordinary reinforcement and
with H-V reinforcement were analyzed and compared. The H-V reinforcement significantly reduced the strain, vertical displacement and horizontal displacement and controlled differential settlement in embankment under traffic loading. H-V reinforcement had a better reinforced effect than ordinary reinforcement, especially in the control of horizontal displacement.