The behavior of sand drain was estimated so that the size of very large load-pressure could be eliminated by changing the configuration of the sand drain elements into sand wall.A 3D mathematical model was formulated ...The behavior of sand drain was estimated so that the size of very large load-pressure could be eliminated by changing the configuration of the sand drain elements into sand wall.A 3D mathematical model was formulated to transform the configuration of a sand drain into a sand wall to minimize or eliminate the excessive stress and primary settlement on the road base.This was barely considered in the past. According to soil mechanics theory and seepage characteristics of sand drain in road base foundations, a 3D sand drain element in FEM format was generated,and a matrix expression was formulated which was introduced into 3D Biot Consolidation展开更多
This paper presents the consolidation analysis of a foundation (Lianyungang City)with sand drain by vacuum priloading, and the calculation of excess pore pressure with anapproximate analytic method and displacement wi...This paper presents the consolidation analysis of a foundation (Lianyungang City)with sand drain by vacuum priloading, and the calculation of excess pore pressure with anapproximate analytic method and displacement with a numerical technique. This semi-analytical method takes in account the mutual effects of 3-dimensional consolidation, soilvisco-elasticity and sand drain group. The calculation is simple. The results have been checkedfairly well with field measurements.展开更多
文摘The behavior of sand drain was estimated so that the size of very large load-pressure could be eliminated by changing the configuration of the sand drain elements into sand wall.A 3D mathematical model was formulated to transform the configuration of a sand drain into a sand wall to minimize or eliminate the excessive stress and primary settlement on the road base.This was barely considered in the past. According to soil mechanics theory and seepage characteristics of sand drain in road base foundations, a 3D sand drain element in FEM format was generated,and a matrix expression was formulated which was introduced into 3D Biot Consolidation
文摘This paper presents the consolidation analysis of a foundation (Lianyungang City)with sand drain by vacuum priloading, and the calculation of excess pore pressure with anapproximate analytic method and displacement with a numerical technique. This semi-analytical method takes in account the mutual effects of 3-dimensional consolidation, soilvisco-elasticity and sand drain group. The calculation is simple. The results have been checkedfairly well with field measurements.
