Numerical Simulation on Fluid-solid Coupling of Gate with Different Structure Types of Hemline in Deep Hole

Although there are some achievements of flow-induced vibration of plane steel gate, few is about the influence on gate caused by the difference of structure types of gates' hemline. This paper studies on the flow pattern, natural vibration characteristics and dynamic response of four typical types of gate's hemline in deep hole of Kajiwa Hydropower Station's service gate. Based on model test and numerical simulation and considering the flow pattern under the gate and in the gate slot, the natural vibration characteristics and the gate's dynamic response, it is suggested to use an anteversion angle and a caster angle (type D for short) for the hemline of the type 11 gate slot. The optimal factors of a gate's hemline in a concrete project can be optimized by numerical simulation.