清远山区高填方路堤稳定性及变形数值分析  

作　　者：李斌 冯伟涛 陈希刚 刘晓海 巨玉文[2] 

机构地区：[1]中国电建市政建设集团有限公司,天津300350 [2]太原理工大学土木工程学院,太原030024

出　　处：《科技创新与应用》2025年第9期54-59,共6页Technology Innovation and Application

基　　金：中国电建市政建设集团有限公司资助项目(2021001)。

摘　　要：以广东省佛清从高速公路斜坡地基高填方路堤为依托工程,运用PLAXIS有限元分析软件,对斜坡地基高填方路堤的稳定性进行数值模拟分析;同时研究不同处治措施对斜坡地基高填方路堤稳定性及变形的影响。分析结果表明,运用PLAXIS有限元软件对斜坡路堤稳定性分析时较不平衡推力法计算的结果更接近实际,偏于安全;挖台阶处理时,其主要作用表现为减小路堤的水平位移;抗滑桩对斜坡地基路堤的稳定性有明显的提高作用,同时对减小路堤的变形也有一定作用,在斜坡中部设置抗滑桩效果更好;恰当高宽组合的反压护道能较好地提高填方路堤的稳定性。这些分析结果可以较为全面地认识相似地质条件下的斜坡地基上高填方路堤的变形与稳定性特征,以有效地指导实际施工。Based on the project of high-filled embankment on sloping foundation of Fuqingcong Expressway in Guangdong Province,the stability of high-filled embankment on sloping foundation was numerically simulated and analyzed using PLAXIS finite element analysis software.At the same time,the influence of different treatment measures on the stability and deformation of high-filled embankment on sloping foundation was studied.The analysis results show that,when using PLAXIS finite element software to analyze the stability of sloping embankments,the results calculated by the unbalanced thrust method are closer to reality and more safe.When digging steps,its main function is to reduce the horizontal displacement of the embankment.Antislide piles have a significant effect on improving the stability of sloping foundation embankment,and also have a certain effect on reducing the deformation of the embankment.Moreover,setting anti-slide piles in the middle of the slope has a better effect;counter-pressure berms with appropriate combination of height and width can better improve the stability of filled embankment.These analysis results can comprehensively understand the deformation and stability characteristics of high fill embankments on sloping foundations under similar geological conditions,and effectively guide actual construction.

关 键 词：斜坡地基 高填方路堤 稳定性及变形 数值分析 处治措施 

分 类 号：TU472.1[建筑科学—结构工程]