摘要
Abstract
To investigate the dynamic characteristics of overflow gates under flow-induced vibration at the Xilongpi Sluice Station,a spectral analysis approach based on pulsating pressure is employed.The power spectral density of the pulsating pressure is input into a finite element model.The study reveals that,during the gate opening process,the most sensitive displacement direction across all components is the vertical direction aligned with the water flow.The Mises stress shows the most significant changes in the support arms and corbel areas,while stress on the gate panel increases notably only within the opening range of 0.5 to 0.8.Among all scenarios,the gate panel experiences the highest and lowest Mises stress response in Scheme 1 and Scheme 4,respectively;the corbel area exhibits relatively stable stress variation.Considering both dynamic displacement and stress response characteristics,Scheme 4-with a specific truss configuration for the support arms—is identified as the most favorable.The results provide a valuable reference for the spectral analysis of pulsating pressure and its impact on dynamic characteristics under flow-induced vibration.关键词
西龙陂闸站/脉动压力频谱/过流闸门/动力特性Key words
Xilongpi sluice station/pulsating pressure spectrum/overflow gate/dynamic characteristics分类
建筑与水利
