拱坝坝面动水压力分布的动力模型试验研究  

Dynamic Model Test Study on Hydrodynamic Pressure Distribution of Arch Dam

作　　者：杜玉涛 朱彤[1] 乐斌 刘文俊 DU Yu-tao;ZHU Tong;LE Bin;LIU Wen-jun(State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室

出　　处：《水电能源科学》2019年第8期58-60,103,共4页Water Resources and Power

基　　金：国家自然科学基金重大研究计划培育和集成项目（91215301）

摘　　要：为分析拱坝坝面的动水压力分布状况,采用大连理工大学研发的仿真混凝土材料进行拱坝坝体—库水相互作用的结构动力模型试验。试验时,分别输入不同地震波,测得拱坝坝面的动水压力分布规律,并与韦斯特伽德公式计算结果进行比较。结果表明,以坝体出现裂缝的临界阶段拱冠梁处的动水压力分布为依据,在研究坝体损伤破坏情况时,建议韦斯特伽德公式的折减系数取0.6。研究成果可为坝体—库水相互作用的流固耦合有限元分析提供参考。In order to analyze the hydrodynamic pressure distribution of arch dam, the structural dynamic model test of arch dam-reservoir interaction was carried out by using simulation concrete materials developed by Dalian University of Technology. During the test, different seismic waves were input to measure the hydrodynamic pressure distribution of arch dam. The results were compared with the calculation results of the Westergaard formula. The results show that based on the hydrodynamic pressure distribution at the crown cantilever in the fracture stage of the dam, when studying the damage of the dam, it is suggested that the reduction factor of the Westergaard formula is 0.6. The research results can provide a reference for fluid-structure coupling finite element analysis of dam-reservoir interaction.

关 键 词：仿真混凝土 动力模型试验 地震波 动水压力 有限元 

分 类 号：TV642.4[水利工程—水利水电工程]