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http://dx.doi.org/10.5000/EESK.2016.20.7.453

Seismic Response Evaluation of Seismically Isolated Nuclear Power Plant Structure Subjected to Gyeong-Ju Earthquake  

Kim, Gwang-Jeon (Department of Civil Engineering, Kangwon National University)
Yang, Kwang-Kyu (Department of Civil Engineering, Kangwon National University)
Kim, Byeong-Su (Department of Civil Engineering, Kangwon National University)
Kim, Hyeon-Jeong (Department of Civil Engineering, Kangwon National University)
Yun, Su-Jeong (Department of Civil Engineering, Kangwon National University)
Song, Jong-Keol (Department of Civil Engineering, Kangwon National University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.20, no.7_spc, 2016 , pp. 453-460 More about this Journal
Abstract
The Gyeong-Ju earthquake in the magnitude of 5.8 on the Richter scaleoccurred in September 12, 2016. Because there are many nuclear power plants (NPP) near the epicenter of the Gyeong-Ju earthquake, the seismic stability of nuclear power plants is becoming a social problem. In order to evaluate the safety of seismically isolated NPP, the seismic response of a NPP subjected to the Gyeong-Ju earthquake was compared with those of 30 sets of artificial earthquakes corresponding to the nuclear standard design spectrum (NSDS). A 2-node model and a simple beam-stick model were used for the seismic analysis of seismically isolated NPP structures. Using 2-node model, the effect of internal temperature rise, decrease of shear stiffness, increase of lateral displacement and decrease of vertical stiffness according to nonlinear behavior of lead-rubber bearing (LRB) were evaluated. The displacement response, the acceleration response, and the shear force response of the seismically isolated nuclear containment structure were evaluated using the simple beam-stick model. It can be observed that the seismic responses of the isolated nuclear structure subjected to Gyeong-Ju earthquake is significantly less than those to the artificial earthquakes corresponding to NSDS.
Keywords
Gyeong-Ju earthquake; Nuclear power plant; Lead-rubber bearing; Heating effect; Seismic response; Seismic isolation;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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