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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.B: Fluid-Structure Interaction >SEISMIC DESIGN OF FLOATING ROOF OF OIL STORAGE TANKS UNDER LIQUID SLOSHING
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SEISMIC DESIGN OF FLOATING ROOF OF OIL STORAGE TANKS UNDER LIQUID SLOSHING

机译：液体晃动下储油罐浮顶的抗震设计

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The 2003 Tokachi-oki earthquake caused the severe damage to oil storage tanks by liquid sloshing. Especially at Tomakomai in Hokkaido, the ground motions at the periods of 3 to 8 sec predominated, which were harmonized with the natural period of liquid sloshing of oil storage tanks, then seven single-deck-type floating roofs were damaged and sank. For the 30,000kl FRT(φ42.7m), one of those tanks, with about 7 sec of fundamental sloshing period, maximum sloshing wave height was estimated 3m and over. On the other hand, for the 100,000kl FRT( φ 78.2m) with about 12 sec of fundamental sloshing period, maximum sloshing wave height was estimated about 1.5m and the excitation of 2nd sloshing mode was considered to be strongly excited. Considering both of nonlinear behavior of a large amplitude wave of 1 st sloshing mode and nonlinear effects of large deflection of a deck plate at 2nd sloshing mode, we established the simplified method of seismic design of single-deck-type floating roofs using modified velocity response spectrum. This spectrum was based on many studies, investigated by Zama and others, of the prediction of long-period strong ground motion and of liquid sloshing of oil tanks in Japan.
机译：2003年的十胜木地震造成油液晃动严重损坏了储油罐。特别是在北海道的Tom小牧市，地面运动在3到8秒的时间段占主导地位，这与储油罐的液体晃动的自然周期相协调，然后破坏并沉没了7个单层式浮顶。对于30,000kl的FRT（φ42.7m），其中一个坦克，基本晃荡周期约为7秒，最大晃荡波高度估计在3m以上。另一方面，对于基本晃动周期约为12秒的100,000kl FRT（φ78.2m），最大晃动波高估计为1.5m，并且认为第二晃动模式的激发是强烈激发的。考虑到第一晃动模式的大振幅波的非线性行为和第二晃动模式的甲板板的大挠度的非线性影响，我们建立了使用改进的速度响应的单层式浮顶抗震设计的简化方法。光谱。此频谱是基于Zama等人进行的许多研究得出的，这些研究预测了日本长期的强烈地面运动和油箱的液体晃动。

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