高速公路软土地基路堤变形影响因素分析  

Analysis of the influence factors of highway soft land foundation embankment deformation

作　　者：梁飞 LIANG Fei(Shanxi Road and Bridge Sixth Engineering Co.,Ltd.,Shanxi Jinzhong 030600 China)

机构地区：[1]山西路桥第六工程有限公司,山西晋中030600

出　　处：《山东交通科技》2022年第5期81-84,共4页

摘　　要：为研究CFG桩设计参数对高速公路软土路基沉降及变形的影响,以某山西高速公路CFG桩处理软土地基项目为研究对象,运用有限元软件分别建立不同桩长、桩间距处理软土地基的计算模型,并针对软土路基顶面水平位移及沉降变化规律进行对比分析。结果表明:增大CFG桩长可以有效控制路基顶面的侧向变形以及路基最大沉降,但桩长不宜过大,增大CFG桩间距会导致软土路基顶面侧向变形和最大沉降越来越大,不利于对软土路基变形的控制,对于采用CFG桩处理的软土地基而言,桩长设计20 m,桩间距设计1.5~2.0 m的加固效果较优。To study the influence of CFG pile design parameters on highway soft soil subgrade settlement and deformation,with a highway CFG pile processing soft land foundation project as the research object,using finite element software to establish different pile length,pile spacing processing soft land foundation calculation model,and for the top of soft soil subgrade horizontal displacement and settlement change law comparative analysis.The results show that increase CFG pile length can effectively control the lateral deformation and subgrade maximum settlement,but pile length should not be too large,increase CFG pile spacing will cause soft soil pile surface lateral deformation and maximum settlement,not conducive to the control of soft soil subgrade deformation,overall,for soft CFG pile foundation,pile length design 20 m,pile spacing design 1.5~2.0 m reinforcement effect is better.

关 键 词：高速公路 软土地基 CFG桩加固 变形 

分 类 号：U416[交通运输工程—道路与铁道工程]