极浅水域圆柱形结构的地震动水压力
Earthquake-induced hydrodynamic pressure of cylindrical structure in extreme shallow water
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摘要: 论述了极浅水域中圆柱形构筑物的地震动水压力,当外部水深或内部储液深度与结构半径之比小于某一数值时,其他震动水压力可近似地用无限长直墙的地震动水压力公式表示.通常情况下水深若小于结构高度的一半时,地震动水压力中的弹性动水压力影响可以忽略.建议使用的地震动水压力简化公式,可为极浅水域中圆柱形结构抗震设计提供参考.Abstract: The hydrodynamic pressure induced by earthquake to the cylindrical structure in extreme shallow water is studied.The earthquake hydrodynamic pressure for the cylindrical structure may approximately be calculated by the chopras formula for the rectilinear wall when the ratio of external water depth to the cylinder radius is smaller than 0.3.The effects of elastically hydrodynamic pressure can be ignored if water depth is smaller than half height of the structure in engineering.The simplified formula for calculating earthquake-induced hydrodynamic to cylindrical structure in extreme shallow water is suggested.
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项忠权,李清林.立式储雄抗震.北京:地震出版社,1990 Fischer D.Dynamic fluid effect in liquid-filled flexible cylindrical tanks.Earthquake Eng.and Struct.Dynamics,1979,7,587-601 居荣初,曾心传.弹性结构与液体的辆联振动理论.北京:地展出版社,1983 Veletsos A S.Seismic effects in flexible liquid storage tanks.1n; Proc.5th World Cont.Earthq.Eng.,ROME,Vol.1,1974,630-639 李长升等.圆柱形人工岛模型的动力试验研究.海洋学报,1996.18(4):137-142 -
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