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http://dx.doi.org/10.5762/KAIS.2020.21.1.409

Analysis of Seismic Performance of Modular Containment Structure for Small Modular Reactor  

Park, Woo-Ryong (Department of Civil Engineering, University of Seoul)
Yhim, Sung-Soon (Department of Civil Engineering, University of Seoul)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.1, 2020 , pp. 409-416 More about this Journal
Abstract
The seismic performance of a containment structure should be secured to maintain the structural soundness of a containment structure under various earthquakes that occur globally. Therefore, an analysis of the seismic performance of a modular containment structure for a small modular reactor is also required. To analyze the seismic performance of modular containment, FEM models with contact surfaces between the modules and tendon were prepared and the modal and seismic analyses were performed. The displacement, stress, and gap size of modular containment under earthquake wave were analyzed. The effects of the tendon force, friction coefficient, and earthquake wave on the seismic performance were analyzed. The seismic performance of monolithic containment was also analyzed for comparison. In the 1st and 2nd natural modes, which most likely affect, the modular containment showed horizontal dynamic behavior, which is similar to monolithic containment, because of the combined effects of the tendon force and friction force between modules. When the combined effect is sufficient, the seismic performance of the modular containment is secured over a certain level. An additional increase in seismic performance is expected when some material with a larger friction coefficient is adopted on the contact surface.
Keywords
Seismic Performance; Modular Containment Structure; Contact Surface; Tendon; Combined Effect;
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Times Cited By KSCI : 4  (Citation Analysis)
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