Abstract
In this study, through a vibration table test, finite element simulation, and research on the rationality of the wave‐height fortification of national storage tank specifications, the sloshing response of vertical storage tanks under the action of near‐fault ground motion was analyzed. The test results showed that the sloshing wave height of a vertical storage tank was larger under near‐fault or long‐period ground motions, and the relationship between the sloshing wave height and the peak acceleration of input ground motions was approximately linear. The numerical simulations of the model tank showed that the simulation wave height and the test wave‐height data were well fitted. Therefore, it was feasible to simulate the sloshing of large vertical storage tanks using ADINA software. In addition, a large number of sloshing simulations of near‐fault ground motions on 10,000 m3 vertical storage tanks were performed. The simulated wave height had a high correlation with the predominant period or pulse period of near‐fault ground motions. Under the calculation with similar parameters, the wave height of the tank standard in several countries had a lower fortification of the near‐fault excitation wave height. Through the root mean‐square method using a small sample size, a wave‐height correction under a near‐fault effect was applied to the wave‐height formula for the Chinese tank seismic specification. Finally, the problem of a double‐damping correction was addressed by adjusting China’s GB50341 wave‐height formula. This work provides a reference value for practical engineering applications.
Highlights
Large vertical storage tanks have thin tank walls and hold a large volume, and the basic self-vibration period of the liquid storage is long
On the basis of a comparison of the shaking table test, numerical simulation, and the wave-height formula of the national tank standard, we corrected the Chinese version of the wave height under near-fault ground motion to study the sloshing effect. is study provides a reference for the wave-height design of vertical storage tanks under the action of near-fault ground motion
The long-period waveform was rich, and the period of the nearfault ground motion TCU and Pasadena waves was relatively large. erefore, the sloshing wave height of the vertical storage tank under the earthquake had a significant correlation with the spectral characteristics of ground motion, in particular, because the wave-height sloshing under the action of long-period ground motion cannot be ignored
Summary
A Study on the Sloshing Problem of Vertical Storage Tanks under the Action of Near-Fault Earthquakes. Through a vibration table test, finite element simulation, and research on the rationality of the wave-height fortification of national storage tank specifications, the sloshing response of vertical storage tanks under the action of near-fault ground motion was analyzed. E test results showed that the sloshing wave height of a vertical storage tank was larger under nearfault or long-period ground motions, and the relationship between the sloshing wave height and the peak acceleration of input ground motions was approximately linear. Erefore, it was feasible to simulate the sloshing of large vertical storage tanks using ADINA software. A large number of sloshing simulations of near-fault ground motions on 10,000 m3 vertical storage tanks were performed. The problem of a double-damping correction was addressed by adjusting China’s GB50341 wave-height formula. is work provides a reference value for practical engineering applications
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