降水条件下土堤稳定性分析  

Stability Analysis on the Earth Embankment Considering the Precipitation

作　　者：郭鸿[1] 高斌[1] 李军[1] 魏鸿林[2] 陈茜[1] 

机构地区：[1]陕西理工学院土木工程与建筑学院,陕西汉中723000 [2]中国城市建设研究院有限公司,北京100120

出　　处：《人民黄河》2016年第2期45-47,共3页Yellow River

基　　金：陕西省教育厅专项科研计划项目(15JK1117);陕西理工学院2015校级科研项目(SLGKY-24);陕西理工学院2015年大学生创新创业训练计划项目(UIRP15087)

摘　　要：传统的土坡稳定分析方法无法考虑降水作用的影响。基于瑞典条分法的基本理论,采用重度替代方法,推导出了考虑降水效应的安全系数表达方程。在此基础上,以汉中市城固县某土堤为研究对象,分析了降水强度和坡比对土堤安全系数的影响,并分别给出了降水强度和坡比与安全系数的拟合关系。最后,分析了在不同降水强度下坡比对安全系数的影响规律,建议在修筑土堤时考虑当地的降水强度影响。The traditional slope stability analysis method cannot consider the effect of precipitation. Based on the basic theory of Sweden slice method, using the alternative methods of gravity, the equation which could consider the precipitation effect had been induced. Based on this, taken an earth embankment in Chenggu Country of Hanzhong City as an example, the effect of precipitation intensity and slope ratio on the safety factor had been analyzed. In addition, the fitting relation of precipitation intensity and slope ratio vs safety factor had been induced. Finally, the effect of slope ratio on safety factor under different precipitation had been analyzed and also the suggestion that considering the rainfall intensity effect during the earthwork construction had been recommended.

关 键 词：土堤 降水 稳定分析 

分 类 号：TV871[水利工程—水利水电工程]