表孔弧形闸门在地震作用的结构控制与研究

he radial gate is widely applied in water conservancy project, a gate and strong earthquakes gate vibration is the main reason of the gate side seam jet and downstream turbulence flow up in door side formed of self-excited oscillation system results. This paper USES the method of control problem solving gate vibration. Based on the finite element model based on finite element calculation results, through the analysis, can reflect the structural low-level strikeout beam structure, the board structure into additional quality function to the beam, the simplified model is established to 3d. Using three-dimensional finite element calculation and dynamic characteristics of the structure and the simplified structure dynamic characteristics of the principle of equal modified dynamic-instability simplified mechanical model, the equivalent of the dynamic-instability three-dimensional structure model and system parameters.