摘要
通过模拟降水过程中基坑的非稳定渗流场,分析了降水过程中作用于水泥土挡土墙上的水压力的变化规律,探讨了非稳定渗流对此类挡墙稳定性的影响.分析结果表明,墙四周的水压力都随时间而减小,而抗倾覆和抗水平滑动抗力分项系数却不断增大,且明显大于不考虑渗流、二维稳定渗流和一维简化渗流的计算结果.因此,在基坑支护设计中应该考虑非稳定渗流的影响.
The condition of water pressure acting on the cement - soil retaining wall and the influence of unsteady seepage on its stability are discussed by simulating the unsteady seepage field in the process of lowering the ground water level. It is illustrated that, while the water pressure is gradually decreasing with time, the subitem coefficients of resisting its overturn and horizontal slipping are increasing and evidently greater than those by the methods with non - seepage, two - dimensional steady seepage and one - dimensional simplified seepage. Therefore, the influence of unsteady seepage should be taken into account in the design of retaining wall.
出处
《郑州大学学报（工学版）》
CAS
2006年第4期18-21,共4页
Journal of Zhengzhou University（Engineering Science）
基金
河南省教育厅科技攻关资助项目(2004601068)
关键词
非稳定渗流
水压力
水泥土
挡土墙
稳定性
unsteady seepage
water pressure
cement - soil
retaining wall
stability
