混凝土重力坝岸坡坝段不同滑动面的抗滑稳定计算与比较  

Calculation and Comparison of Anti Sliding Stability of Different Sliding Surfaces on Bank Slope of Concrete Gravity Dam

作　　者：仲静文 朱晶 顾冬 吴宇 Zhong Jingwen;Zhu Jing;Gu Dong;Wu Yu(Nanjing Water Conservancy Planning and Design Institute Co.,Ltd.,Nanjing 210022,Jiangsu;Nanjing Xingang Development Corporation,Nanjing 210038,Jiangsu)

机构地区：[1]南京市水利规划设计院股份有限公司,江苏南京210022 [2]南京新港开发总公司,江苏南京210038

出　　处：《陕西水利》2021年第2期23-26,共4页Shaanxi Water Resources

摘　　要：由于混凝土重力坝岸坡坝段处在河床坝基和岸坡坝基的交界处,受力条件比较特殊,且扬压力分布较河床坝段更为复杂,所以准确计算和分析交界坝段的稳定情况就比较困难。采用了严格刚体极限平衡法,考虑了3种不同扬压力分布的强度系数变化,计算了坝基滑动面、岸坡倾斜滑移面、坝基深层滑动面的抗滑稳定安全系数,并且讨论了相应的加固措施。通过实例计算可知:该计算方法简便可靠,可为同类工程问题提供解决思路。Because the bank slope section of concrete gravity dam is located at the junction of river bed dam foundation and bank slope dam foundation,the stress conditions are relatively special,and the uplift pressure distribution is more complex than that of river bed dam section,so it is difficult to accurately calculate and analyze the stability of the junction dam section.In this paper,the rigid body limit equilibrium method is used to calculate the anti sliding stability safety factors of the sliding surface of the dam foundation,the inclined sliding surface of the bank slope and the deep sliding surface of the dam foundation,and the corresponding reinforcement measures are discussed.The calculation results show that the calculation method is simple and reliable,and it can provide solutions for similar engineering problems.

关 键 词：重力坝 岸坡坝段 滑动面 抗滑稳定 抗剪断强度 

分 类 号：TV642.3[水利工程—水利水电工程]