摘要
采用ANSYS有限元分析软件建立斜坡路基边坡有限元数值模型,分析了不同路堤边坡坡度、地基坡度、路堤高度及路基宽度对路堤位移和应力的影响规律,研究表明:1)斜坡路堤边坡坡度的变化对路堤位移及应力影响较小,建议路堤边坡坡度在1:13-1:1.7范围选取;2)随着斜坡地基坡度的增大,路堤位移及剪应力均呈现先增大后减小趋势,建议斜坡地基坡度不超过1:4.5为最佳;3)随着斜坡路堤高度的增大,路堤的位移逐渐增大,最大剪应力先减小后增大,建议实际施工中路堤高度可选取18.22m;4)斜坡路堤的位移及应力均随着路基宽度的增大而增大,实际工程中建议路基宽度不超过20m最为理想。
The finite element numerical models of slope embankment slope are established by the analysis software ANSYS,and the influence of different embankment slope,foundation slope,embankment height and embankment width are simulated and analyzed with the displacement and stress of embankment.The results show that:1)the slope gradient of slope embankment has little influence on the displacement and stress of embankment,and it is suggested that the slope gradient of embankment should be chosen in the range of1:1.3~1:1.7;2)with the increase of slope,the displacement and shear stress of embankment increase first and then decrease.It is suggested that the slope gradient of slope is less than 1:4.5;3)with the height of embankment increasing,the displacement of embankment increased.The maximum shear stress decreases first and then increases.It is suggested that the height of embankment can be chosen of 18~22 m in actual construction;4)the displacement and stress of the slope embankment increase with the increase of the width of the roadbed,and it is suggested that the width of the embankment should not exceed 20 m in practical engineering.
作者
魏佩顺
Wei Peishun(Zhengzhou Highway Engineering Company,Zhengzhou 450000,Henan,China)
出处
《岩土工程技术》
2019年第3期162-165,177,共5页
Geotechnical Engineering Technique
关键词
斜坡路基边坡
路堤
位移
剪应力
slope subgrade slope
embankment
displacement
shear stress
