层状岩体边坡抗滑桩加固效应的数值分析  

Numerical analysis for reinforcement response of pile in stratified rock slope

作　　者：徐爱民[1,2] 柳群义[2,3] 朱自强[2] 鲁光银[2] 

机构地区：[1]湖南省高速公路管理局,湖南长沙410003 [2]中南大学地球科学与信息物理学院,湖南长沙410083 [3]中国地质科学院矿产资源研究所,北京100037

出　　处：《中南大学学报（自然科学版）》2011年第8期2453-2458,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50099620)

摘　　要：利用数值方法探讨抗滑桩在层状岩体边坡中的加固效果,分析抗滑桩位置和桩长对于边坡变形、应力的影响。研究结果表明:抗滑桩位置对于边坡水平位移的影响较大;当抗滑桩位于边坡坡面中下部时(但需保证抗滑桩穿过了最危险滑动面),对岩土体变形的效果最佳;随着桩长的增大,边坡水平位移突变逐渐减少,最大位移也逐渐减小。存在一临界桩长Lcr,当桩长超过Lcr时,继续增大桩长对位移的控制效果明显降低。The reinforcement effect of the pile in rock bedded slope was studied by the numerical analysis method.The effects of the pile location,pile length to the deformation and stress of slope were analyzed.The results show that the location of pile has great influences on the horizontal displacement of slope.If the pile is driven at the mid-bottom place of slope surface and makes sure that the pile is driven through the potential slip surface,the effect of controlling deformation of rock mass is the best.With the increase of the length of pile,the maximum displacement of slope is decreased gradually.There exists a limit pile length Lcr,if pile length is larger than Lcr,and the effect of pile length on deformation control will reduce.

关 键 词：层状岩体 边坡 抗滑桩 加固效应 应力 变形 数值分析 

分 类 号：TU457[建筑科学—岩土工程]