高拱坝坝身泄洪流激振动水弹性模拟研究  

Hydro elastic vibration simulation for overflow high arch dam

作　　者：谢省宗[1] 李世琴[1] 吴一红[1] 施民栋[2] 

机构地区：[1]中国水利水电科学研究院 [2]北京市水利科学研究所

出　　处：《水利学报》1997年第12期1-9,共9页Journal of Hydraulic Engineering

基　　金："八.五"国家科技攻关项目

摘　　要：研制了对混凝土坝及基岩进行水弹性模拟的新配方和材料，并用此材料成功地对黄河拉西瓦高拱坝坝身泄洪的流激振动进行水弹性模拟试验．在比尺为１∶１５０的拱坝地基库水耦合系统的水弹性整体模型上，进行了实验模态分析，给出系统的空、满库的模态特性并与理论模态相比较；测定了拱坝坝身泄洪水舌跌落水垫塘消能时，紊流流激振动的动力响应，定量给出响应的强度和频谱；论证了高拱坝坝身泄洪的安全性． 1∶150 hydro elastic vibration model test for Laxiwa overflow arch dam has been carried out successfully in lab.A new kind of material was developed to simulate the characteristics of the concrete dam and the basement.The experimental modal characteristics of the dam foundation reservoir coupling system have been attained when the reservoir was pounded with and without water.The result was verified by theoretical modal analysis.The dynamic response of the dam due to the overflow falling into the plunge pool has been quantitatively measured.Thus,the safety of the dam during overflow was demonstrated.

关 键 词：高拱坝 坝身 泄洪 流激振动 水弹性 拱坝 

分 类 号：TV135.2[水利工程—水力学及河流动力学]