Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Damage Potential of a Domestic Metropolitan Railway Bridge subjected to 2016 Gyeongju Earthquake

2016년 경주지진에 의한 국내 도시철도 교량의 잠재적 손상평가

  • 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)
  • 이도형 (배재대학교 건설환경.철도공학과) ;
  • 심재엽 ((주)승화기술정책연구소) ;
  • 전종수 (안동대학교, 토목공학과)
  • Received : 2016.11.17
  • Accepted : 2016.12.02
  • Published : 2016.12.30
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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.

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References

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