| 英文摘要 |
During earthquakes, most damage, except for buckling, in water storage tanks is caused by liquid sloshing, especially under long-period and long-duration ground motions. This is because the sloshing frequency of the water is low and the period is similar to the pulse period of nearfault ground motions. For nuclear power plants, such sloshing may cause sinking and the complete collapse of the floating roofs of specific tanks. It may also cause fire in oil tanks, and cooling water loss in the spent fuel pool. Therefore, it is worth paying attention to the resonant effect of near-fault ground motions on the sloshing mode of water storage tanks. An experiment is implemented to study the resonant response of the sloshing mode. The purpose of this experiment is to estimate the sloshing height and the associated total volume of water splashing out of a tank under near-fault ground motions, and also to determine the relationship between the resonant response and the input velocity pulse. This paper describes the test plan in detail, consisting of (1) the design of the scaled storage tank and water depth and (2) the selection and processing of input motions including the original near-fault ground motions, extracted velocity pulse, and extracted bandpass signals for resonance analysis, as well as the impulse motion for free vibration. |
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