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以构皮滩双曲拱坝为对象,采用水弹性模型研究坝身集中泄洪、水垫塘消能所诱发的坝体振动及其影响。采用加重橡胶材料,建立了1/150 的水力学和结构动力学协调相似的水弹性模型,完善了对库水、地基、坝体、水流脉动荷载相互作用的模拟。试验中采用了先进的测试手段和数据分析处理软件包,对该模型的模态和多种泄洪工况下坝体的振动响应和脉动压力进行了系统的测试和分析,并对泄洪诱发的坝体振动影响作出了评估
Taking Goupitan double-curvature arch dam as an example, the hydroelastic model is used to study the dam body vibration induced by concentrated dam discharge and water cushion pond energy dissipation. The rubber material is used to establish 1/150 hydraulics and structural dynamics to coordinate the similar hydroelastic model and improve the simulation of the fluctuating load interaction of reservoir water, foundation, dam body and water flow. In the experiment, advanced test methods and data analysis and processing software package were used to test and analyze the vibration response and the fluctuating pressure of the dam under various modalities and various flood discharge conditions. The dam-induced dam Body vibration effects were evaluated