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http://dx.doi.org/10.5000/EESK.2016.20.7.461

Damage Potential of a Domestic Metropolitan Railway Bridge subjected to 2016 Gyeongju Earthquake  

Lee, Do Hyung (Department of Civil, Environmental and Railroad Engineering, Paichai University)
Shim, Jae Yeob (S.H. Tech&Policy Institute)
Jeon, Jong-Su (Department of Civil Engineering, Andong National University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.20, no.7_spc, 2016 , pp. 461-472 More about this Journal
Abstract
Damage potential has been investigated for a domestic metropolitan railway bridge subjected to 2016 Gyeongju earthquake which has been reported as the strongest earthquake in Korea. For this purpose, nonlinear static pushover analyses for the bridge piers have been carried out to evaluate ductility capacities. Then, the capacities have been compared with those suggested by Railway Design Standards of Korea. This comparison shows that all piers possess enough safety margins. Nonlinear dynamic time-history analysis has also been conducted to estimate both displacement and shear force demands for the bridge subjected to ground motions recorded at stations in near of Gyeongju. Maximum demands reveal that response under the ground motions remains essentially in elastic. In addition, for a further assessment of the bridge under the Gyeongju earthquake, fragility analyses have been performed using those ground motions. The fragility results indicate that the recorded earthquakes do not significantly affect the damage exceedance probability of the bridge piers.
Keywords
Gyeongju earthquake; Railway bridge; Nonlinear analysis; Fragility analysis;
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