摘要
在海堤工程中潮位涨落属于正常运行工况,必须深入分析潮位涨落过程中海堤的稳定性。利用有限元对潮位涨落过程中不同堤身土进行瞬态渗流分析,在此基础上运用通用条分法GLE对海堤进行稳定性分析。探讨了选取不同初始条件对海堤渗流和稳定性的影响。研究表明,渗透系数决定了潮位涨落过程中堤内孔隙水压力的大小和分布;潮位涨落过程中海堤安全系数变化规律与潮位变化规律一致,最小安全系数出现在最低潮位处。
The fluctuation of tidal level is a normal condition in seawall engineering,it is necessary to investigate the stability of seawalls in the process of tidal level fluctuation.According to various soils of seawall body,transient seepage analysis was carried out in the process of tidal level fluctuation by finite element method;and based on the above results,the stability analysis of seawall was also carried out using GLE method.The effects of different initial conditions on seawall seepage fields and stability were discussed as well.The results show that the value and distribution of pore-water pressure were determined by permeability coefficient of soils.Variation trend of the safety factor of seawall is in accordance with variation trend of tidal level and the minimum safety factor appears when a tidal level drops to the lowest.
出处
《人民长江》
北大核心
2011年第3期83-86,106,共5页
Yangtze River
关键词
海堤
潮位涨落
渗流分析
稳定性分析
条分法
seawalls
tidal level fluctuation
seepage analysis
stability analysis
slice method
