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http://dx.doi.org/10.1016/j.net.2018.08.005

Design-oriented acceleration response spectrum for ground vibrations caused by collapse of large-scale cooling towers in NPPs  

Lin, Feng (Department of Structural Engineering, Tongji University)
Jiang, Wenming (Department of Structural Engineering, Tongji University)
Publication Information
Nuclear Engineering and Technology / v.50, no.8, 2018 , pp. 1402-1411 More about this Journal
Abstract
Nuclear-related facilities can be detrimentally affected by ground vibrations due to the collapse of adjacent cooling towers in nuclear power plants. To reduce this hazard risk, a design-oriented acceleration response spectrum (ARS) was proposed to predict the dynamic responses of nuclear-related facilities subjected to ground vibrations. For this purpose, 20 computational cases were performed based on cooling tower-soil numerical models developed in previous studies. This resulted in about 2664 ground vibration records to build a basic database and five complementary databases with consideration of primary factors that influence ground vibrations. Afterwards, these databases were applied to generate the design-oriented ARS using a response spectrum analysis approach. The proposed design-oriented ARS covers a wide range of natural periods up to 6 s and consists of an ascending portion, a plateau, and two connected descending portions. Spectral parameters were formulated based on statistical analysis. The spectrum was verified by comparing the representative acceleration magnitudes obtained from the design-oriented ARS with those from computational cases using cooling tower-soil numerical models with reasonable consistency.
Keywords
Ground vibration; Structural collapse; Response spectrum; Nuclear power plant;
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Times Cited By KSCI : 1  (Citation Analysis)
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