摘要
在软土地基中设置成层的环状排水砂层,使饱和土中孔隙水沿径向具有两个相反方向的排水通道,超静孔压可以朝环状土层的两圆侧壁消散,通过径向排水通道的增加及排水路径的缩短,可以加快软土固结。基于这种思路,建立了相应的饱和软土固结数学模型,进行了求解,并通过实例对超静孔压分布和发展规律以及软土固结性状进行了分析。
Pore-water in saturated soil gains both way drainages in radial directions by installing annular sand-layered drainages into the soft soil ground, and then the excess pore-water pressure can be dissipated along the two lateral surfaces of every annular soil layer. As addition of radial dissipation surface and reduction of dissipating distance, soft soil foundation can consolidate faster. Based on these ideas, the corresponding mathematical model of saturated soil consolidation and its analytical solution is presented; and then by a case study, the distribution and development of excess pore-water pressure, and consolidation characteristics of saturated soil are analyzed.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2009年第12期3871-3875,共5页
Rock and Soil Mechanics
关键词
超静孔压
排水通道
环状土层
固结
数学模型
excess pore-water pressure
drainage way
anriular soil layer
consolidation
mathematical model
