CAJ | 학술논문

散粒体材料具有抗压缩能力强的优点，被应用于路堤填筑中。但由于其黏聚力较小，常需要采用黏性土包边的方法进行边坡处理。影响散粒体包边路堤稳定性的影响因素很多，因此，合理选择包边土参数显得十分重要。本文采用Janbu条分法，并结合最优滑动面概率统计方法，分析了路堤的高度、坡比，包边土厚度、黏聚力、摩擦角对于散粒体包边路堤稳定性的影响。分析结果表明：散粒体包边路堤稳定性随着包边土厚度、黏聚力和摩擦角的增加而增大；在同等包边条件下，路堤高度和坡比的增加会降低包边路堤的整体稳定性；用掺灰手段改良包边土参数能有效增加散粒体包边路堤的稳定性。
산립체재료구유항압축능력강적우점，피응용우로제전축중。단유우기점취력교소，상수요채용점성토포변적방법진행변파처리。영향산립체포변로제은정성적영향인소흔다，인차，합리선택포변토삼수현득십분중요。본문채용Janbu조분법，병결합최우활동면개솔통계방법，분석료로제적고도、파비，포변토후도、점취력、마찰각대우산립체포변로제은정성적영향。분석결과표명：산립체포변로제은정성수착포변토후도、점취력화마찰각적증가이증대；재동등포변조건하，로제고도화파비적증가회강저포변로제적정체은정성；용참회수단개량포변토삼수능유효증가산립체포변로제적은정성。
The granular material is always used in embankment filling according to its high compression modulus. Due to the small cohesive force,the granular embankment needs to be wrapped by clay soil generally. There exist many influence factors of the wrapping embankment stability and the reasonable selection of wrapping soil parameters is important. In this paper,Janbu slices method combing optimal sliding surface probability statistical method is used to analyze the influence of embankment height,slope ratio,thickness,cohesive force and friction angle of wrapping soil on the wrapping embankment stability. The analysis results show as follows. The wrapping embankment stability increases with the increasing of wrapping soil’s thickness,cohesive force and friction angle;Under the same wrapping condition,the wrapping embankment stability decreases with the increasing of embankment height and slope ratio;Improving the mechanical parameters of wrapping soil by mixed with fly ash is the effective method to increase stability of wrapping embankment.