关键词: 自振特性, 静动力分析, 脉动压力, 弧形闸门

Abstract:

The radial gate has the advantages of small opening-closing force and good over-flow regime. However, when the gate is opened and closed under high submergence degree, the flow pulsation pressure will exert adverse impacts on the safety operation of the gate. Taking an example of a water conservancy project, the finite element software was adopted to analyze the static and dynamic stress condition, natural vibration characteristics and fluctuating pressure spectrum of the gate. The analysis results show that the gate stress is in the allowable range of material strength under the various working conditions, and the displacement is small in all directions, which indicates that the strength and stiffness of the gate meet the requirements.

Key words: radial gate, self-vibration characteristics, static and dynamic analysis, pulsation pressure