摘要
本文通过FLAC程序建立了16个土钉墙的数值模型,借助交叉试验的方法,分别计算了土钉和面层连接、土钉倾角、土钉长度布设、土钉间距这四种因素对两种坡度(73.3度和90度)基坑变形的影响。结果表明对不同坡度的基坑,它们影响的大小不同,并且它们之间存在明显的交互作用。随着基坑放坡角度的增大,土钉倾角、土钉间距的交互作用变小,成为次要因素,而土钉倾角、土钉长度布设的交互作用变大,成为主要因素。基于以上分析结果,提出了有效控制土钉支护变形应该考虑的因素和设计方案。
The numerical analysis for the deformation of the nailed soil wall and the optimization of design parameters are carried out in the paper. It is made that sixteen models for cross-over experiment are used in the study with the software of FLAC-2D. The influences of four factors are considered. It includes the connection between the soil nail and the surface course, the inclination of soil nail, the collocation and length of soil nail, and the spacing of soil nail. At same time, two angles of slope of the foundation pit are discussed. The results are shown that the influence of the design parameters to the deformation of nailed soil wall is dependent with the angle of slope. It is found that some useful conclusions can be used for reference.
出处
《土木工程学报》
EI
CSCD
北大核心
2003年第11期24-28,共5页
China Civil Engineering Journal
基金
北京市科委资助项目(KP041200361)
关键词
土钉墙
优化
设计参数
交叉试验
nailed soil wall, optimization, design parameters, crossover experiment
