蓄水初期抗力体谷幅变形及对特高拱坝变形的影响  

Valley Movement and Its Influence on Extra-High Arch Dam in the Initial Impoundment Period

作　　者：赵程 郑晓红 段杭 ZHAO Cheng;ZHENG Xiao-hong;DUAN Hang(Large Dam Safety Supervision Center,National Energy Administration,Hangzhou 311122,China;PowerChina Huadong Engineering Corporation Limited,Hangzhou 311122,China;China Three Gorges Construction Engineering Corporation,Chengdu 610000,China)

机构地区：[1]国家能源局大坝安全监察中心,浙江杭州311122 [2]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [3]中国三峡建工(集团)有限公司,四川成都610000

出　　处：《水电能源科学》2024年第7期133-136,共4页Water Resources and Power

摘　　要：抗力体部位谷幅变形对特高拱坝结构安全性影响较大。以白鹤滩水电站为例,在分析白鹤滩水电站蓄水初期抗力体部位谷幅变形的基础上,采用结构有限元计算方法,分析蓄水初期实际谷幅变形对坝体的影响程度,并分析谷幅变形的分布特征对拱坝变形影响敏感性。结果表明,白鹤滩水电站初蓄期谷幅变形较小,目前谷幅变形对坝体变形影响有限,不同谷幅变形分布形式对特高拱坝影响较为显著,为进一步蓄水提供了理论支撑。The dam abutment valley movement has a significant impact on the structural safety of the extra-high arch dam.On the basis of analyzing the dam abutment valley movement of the Baihetan arch dam,the structural finite element calculation method is used to analyze the influence of the actual valley movement on the arch dam during the initial impounding period.Moreover,the sensitivity of the distribution characteristics of valley movement to the arch dam deformation influence is studied.The results indicate that the valley movement of Baihetan Hydropower Station during the initial impounding period is relatively small,and the influence on arch dam deformation is limited.The different distribution forms of valley movement have a significant impact on extra-high arch dams,which provides support for further impoundment.

关 键 词：白鹤滩水电站 特高拱坝 蓄水初期 谷幅变形 变形影响性 

分 类 号：TV698.11[水利工程—水利水电工程]