摘要
采用刚体极限平衡法和有限元强度折减法,研究水闸在设置齿墙后的浅层失稳模式为"滑移-倾覆"混合模式而非单纯的滑移破坏。选择6组代表性地基土上的水闸为研究对象进行计算分析,得出了抗滑稳定安全系数随齿墙深度的增加近似线性增加的结论,提出了考虑齿墙抗滑效应的修正深齿墙法和增设中齿墙以提高水闸抗滑稳定性的设计方法。
The shallow failure pattern of sluice with key-wall is studied by using rigid equilibrium method and finite element shear strength reduction method, which is proven to be a mixed pattern of slide-rotation instead of pure slide. The FEM computation for sluices built on six representative soil foundations are carried out and find out that the safety factor increases nearly linearly with the increase of key wall depth. A modified deep key wall method to calculate safety factor of stability is put forward. A middle key wall is also proposed to be arranged in design to improve the sliding resistance of sluices.
出处
《水力发电》
北大核心
2013年第5期41-45,共5页
Water Power
关键词
软基
水闸
齿墙
抗滑
soft foundation
sluice
key wall
sliding resistance
