CFG桩在路基拓宽中应用的数值模拟  

NUMERICAL SIMULATION OF CFG COLUMNS TO SUPPORT WIDENING OF EMBANKMENTS

作　　者：陈祥林[1] 王驰[1] 白玉恒[2] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]华润置地(上海)有限公司,上海200092

出　　处：《低温建筑技术》2009年第7期100-102,共3页Low Temperature Architecture Technology

摘　　要：以有限元软件Plaxis为工具,对软土路基拓宽进行模拟,揭示了路基拓宽后CFG桩复合地基的变形规律和承载特性。结果表明:路基拓宽后的最大沉降和水平位移均发生在新填筑的路堤,新路基采用CFG桩复合地基处理法能有效地减小沉降和水平位移,桩长和桩间距对CFG桩复合地基的荷载传递有较大影响。The finite element analysis software package, Plaxis 8.2, is used to investigate the regularity of deformation and the characteristie of bearing of CFG columns composite foundatio in the widened embankments over soft soil . The results presented in this paper indicate that the maximum setdement and horizontal displacement oeeour in the new widending part. The application of CFG columns composite foundation can reduce settlement and horitional displacement efficiently. The length of columns and the ratio of column spacing to column diameter are the more important factors in the distribution of the loads.

关 键 词：路基拓宽 沉降 水平位移 CFG桩 

分 类 号：TU473.11[建筑科学—结构工程]