摘要
基于土的塑性极限分析方法,以均质土坡为例,从土钉支护结构的准粘聚力理论出发,综合考虑土体自重、坡顶的条形荷载,以及土钉与土体的相互作用的机理,推导出了土钉支护的临界高度的上限值和潜在螺旋曲线滑动面在坡顶方向距基坑边沿的最小水平距离解析表达式,可供基抗支护设计参考.
Based on the method of limitation analysis of soil plasticity, researching from the soil arching mechanism of soil-nailing retaining, the upper limit of the critical height of soil-nailing slopes and the minimum horizontal length from coping of the potential slide surface to the edge of deep excavation are obtained through the analysis to weight of soil and vertical loading and the mechanism of soil and soil-nailing acting reciprocally.
出处
《华北水利水电学院学报》
2006年第1期91-93,共3页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
塑性极限分析法
上限定理
土钉
机动许可的速度场
临界高度
最小水平距离
limit analysis of soil plascisity
upper bound theorem
soil-nailing
kinematically admissible velocity field
critical height
the minimum horizontal length
