【摘要】 路堑路堤是我国西部山区常见的路基形式。该文结合工程实例,采用有限元数值分析软件ABAQUS对位于国道213DK732+560处坡度分别为1:1.5和1:1.75的半挖半填路堤进行了分析。本文首先选取5.12汶川地震中卧龙台站所记录的加速度时程,将有限元分析结果与Newmark法计算结果进行比较发现,对于坡度为1:1.5和1:1.75的路堤,有限元数值分析计算出的结果与PGA放大系数为1.25倍的Newmark法计算结果比较吻合,PGA放大系数取1.25倍时有更高的准确度。更多还原

【Abstract】 Cutting embankment is a common embankment form in China’s western mountains.Combined with an engineering example,the article uses the finite element analysis software ABAQUS to analyze the embankment located at National Road 213DK732+560.Firstly,the acceleration time history recorded at the Wolong stations is selected,by comparing the results from the finite element analysis,results show that the PGA amplification 1.25times is equal to and greater.If this coefficient is used to analyze embankments,the reliability of engineering design can be improved.更多还原