摘要
根据水动力学相似和结构动力学相似原理制作了大比尺水弹性橡胶坝模型，对充水橡胶坝溢流时静力变形和动态特性进行了研究，分析了橡胶坝溢流变形规律，对水流脉动压力特性、橡胶坝的自振特性、坝袋内水压的脉动特征及橡胶坝袋的动应力和动位移进行了测试，并对橡胶坝的起伏拍动现象、共振现象和振动控制方面作了试探性的研究．在理论上，采用薄膜结构的几何非线性理论对橡胶坝的静力变形进行了计算。
According to hydraulics similarity and structure dynamics similarity, two big hydroelastic experimental models are made and the static deformation and dynamic characteristics are analysed. Shapes, vibration, response free vibration, internal pulsating water load and dynamic stress and displacement of rubber dams are tested in detail. This paper also discusses tentatively the fluttering, resonances and vibration controlling of the rubber dam. Using the geometrically nonlinear theory of memberance, geometrically nonlinear fintite element equations are deduced and static deformation of the rubber dem is calculated.
出处
《天津大学学报》
EI
CAS
CSCD
1997年第3期305-311,共7页
Journal of Tianjin University(Science and Technology)
基金
天津市二十一世纪青年科学基金
关键词
橡胶坝
静力变形
模型试验
泄流振动
rubber dam, static deformation, overflow vibration, model experiment, finite element calculation
