龙背湾面板堆石坝面板挠度特性分析  

Slab Deflection Analysis of Longbeiwan Concrete Face Rockfill Dam

作　　者：杨娟娟[1] 施玉群[1] YANG Juanjuan SHI Yuqun(School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430072, Chin)

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《水电与新能源》2017年第3期44-47,共4页Hydropower and New Energy

基　　金：国家自然科学基金项目(51379162);中央高校基本科研业务费专项(2042016kf1081)

摘　　要：根据龙背湾面板堆石坝面板挠度监测资料,通过对面板挠度变化过程、特性及挠度分布状态的分析研究表明,在蓄水前面板挠度主要受其自重和堆石体沉降的影响,面板挠度数值较小,分布比较均匀;蓄水后下部面板受水压力的影响向内法向方向变形的区域逐渐增大,中上部面板受翘板效应的影响主要表现为向外法向方向变形。龙背湾面板堆石坝面板挠度分布状态与变化过程合理,与理论计算成果基本吻合,与同类面板堆石坝面板挠度变化规律基本一致,挠度性态正常。According to the deflection monitoring data of Longbeiwan Concrete Face Rockfill Dam,the variation process,distribution state and characteristics of the panel deflection are studied. The results show that the deformation of the panel before impoundment is mainly affected by the self weight of the panel and the settlement of the rockfill. Thus the deflection is small and evenly distributed. After impoundment,the lower part of the panel deforms towards the inward normal direction due to the water pressure. While the upper part of the panel deforms towards the outward normal direction due to the bending effect. The monitored deflection is consistent with the theoretical result and also reasonable.It could be a useful reference for the deflection analysis of similar dams.

关 键 词：面板堆石坝 挠度 电平器 监测资料 

分 类 号：TV641.4[水利工程—水利水电工程]