论文部分内容阅读
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.
New formulas and materials for hydroelastic simulation of concrete dams and bedrock were developed. The hydro-elastic simulations of the flow induced vibration of the dam of Laxiwa high arch dams were carried out successfully with this material. The experimental modal analysis was carried out on a hydro-elastic monolithic model of an arch dam-foundation-reservoir-water coupling system with a scale of 1: 150. The modal properties of the system were obtained and compared with the theoretical modalities The dynamic response of turbulent flow-induced vibration was measured and the response intensity and spectrum were quantitatively measured. The safety of flood discharge in high arch dam was demonstrated.