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水弹性模型实验结合计算机“动态”仿真模拟的方法是研究高拱坝泄洪振动最有效的方法。以乌江构皮滩拱坝为背景, 在水弹性模型实验研究基础上, 建立了带闸墩和不带闸墩的两种拱坝有限元模型, 分别计算2 者的模态和频率, 并通过将荷载功率谱转化成过程线, 研究了2 者在随机荷载下的时域反应, 分析比较后认为, 在高拱坝泄洪振动研究中, 闸墩是个不可忽略的因素。
Hydroelastic model experiments combined with computer “dynamic” simulation method is to study the high arch dam flood discharge vibration the most effective method. Based on the experimental study of the hydroelasticity model, two kinds of arch dam models with or without pier were established, and the modal and the frequency of the two were calculated respectively The power spectrum of the load is transformed into the process line, and the time domain response of the two under random loading is studied. After analysis and comparison, it is considered that in the research of flood discharge vibration of high arch dam, the pier is a non-negligible factor.