Highlights: Ground vibration because of the collapse of a huge cooling tower was predicted. Unintentional loads with completely different characteristics brought about completely different collapse modes. Effect of floor vibration on the nuclear-associated facilities can’t be ignored.
— Summary: A comprehensive strategy is introduced on this study for the prediction of the bottom vibration as a result of collapse of a 235 m excessive cooling tower, which may be brought on by varied accidental loads, e.g., explosion or robust wind. The predicted ground movement is to be used within the security evaluation of nuclear-associated facilities adjoining to the cooling tower, as effectively because the plant planning of a nuclear power station to be constructed in China.
Firstly, falling weight checks have been conducted at a development site utilizing the dynamic compaction technique. The bottom vibrations were measured within the form of acceleration time history. A finite aspect methodology primarily based falling weight-soil model was then developed and verified by subject check results. Meanwhile, the simulated collapse processes of the cooling tower below two unintentional masses were completed in a parallel research, the outcomes of that are briefly launched in this paper.
Moreover, based on the falling weight-soil model, cooling tower-soil models were developed for the prediction of the bottom vibrations induced by two collapse modes of the cooling tower.
Finally, for a deep understanding of the vibration characteristics, a parametric research was additionally conducted with consideration of various collapse profiles, soil geologies as well because the arrangements of an isolation trench. It was discovered that severe ground vibration occurred in the neighborhood of the cooling tower when the collapse happened.
However, the vibration attenuated quickly with the rise in distance from the cooling tower. Moreover, the collapse in integrity mode and the rock foundation contributed to exciting intense ground vibration.
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