水力发电学报2024，Vol.43Issue(12)：1-12,12.DOI:10.11660/slfdxb.20241201
高拱坝闸墩泄流振动传递路径的模型试验分析
Model experiment analysis of discharge vibration transmission paths in high arch dam piers
摘要
Abstract
High arch dam piers experience intense vibrations during flood discharge,which could lead to certain fatigue damage to the structure or even a failure.A thorough understanding of their dynamic behaviors and the mechanisms of discharge vibration is essential to ensuring safe dam operation.This paper presents a new method for analyzing the transmission path of discharge vibration in high arch dam piers based on model experiments.We construct a water elastic model for the pier of a high arch dam based on the theory of water elastic model vibration test,and collect vibration acceleration information from different parts of the pier.Then,the transfer entropy method is used to analyze the vibration transmission paths in the pier.We have proved the use of transfer entropy allows accurate capture of the energy flow and transmission direction in complex vibration systems,suitable for analysis of the vibration transmission paths in the pier.The results indicate that in a pier structure,vibration transmission starts from three major positions-the top,bottom,and hinged beams on the inner pier side wall;the middle part of this wall and the tail of the gate in the flow are two major zones for vibration to gather.This study would be useful theoretically and practically for the design and maintenance of high arch dam piers.关键词
闸墩/模型试验/泄流振动/传递熵/传递路径Key words
pier/model test/discharge vibration/transfer entropy/vibration transmission paths分类
水利科学引用本文复制引用
刘庆亮,刘光昆,李庆斌,宋志宇,蔡小宁..高拱坝闸墩泄流振动传递路径的模型试验分析[J].水力发电学报,2024,43(12):1-12,12.基金项目
中国博士后科学基金(2023M731260) （2023M731260）
河南科技智库黄河国家战略研究基地专项基金(YF007) （YF007）
