Seismic Fragility of Weir Structure Considering Aging Degradation of Concrete Material
This study presented the seismic fragility framework of concrete weir structure subjected to strong seismic ground motions and in particular, concrete aging condition of the weir structure was taken into account in this study. In order to understand the influence of concrete aging on the weir structure, by using probabilistic risk assessment, the analytical seismic fragility of the weir structure was derived for pre- and post-deterioration of concrete. The performance of concrete weir structure after five years was assumed for the concrete aging or deterioration, and according to after five years’ condition, the elastic modulus was simply reduced about one–tenth compared with initial condition of weir structures. A 2D nonlinear finite element analysis was performed considering the deterioration of concrete in weir structures using ABAQUS platform, a commercial structural analysis program. Simplified concrete degradation was resulted in the increase of almost 45% of the probability of failure at Limit State 3, in comparison to initial construction stage, by analyzing the seismic fragility.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1130359Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 592
 Indrani Gogoi, Damodar Malty, “Vulnerability of Aged Concrete Gravity Dams”, World Conference on Earthquake Engineering, No.1839, 2004.
 P.B. Tekie and B.R. Ellingwood, “Seismic fragility assessment of concrete gravity dams,” Earthquake Engineering and Structural Dynamics, 32, pp. 2221-2240, 2003.
 B. Ellingwood and P.B. Tekie, “Fragility analysis of concrete gravity dams,” Journal of Infrastructure Systems, 7, pp. 41-48, 2001.
 Bu Seog Ju, Woo Young Jung, “Evaluation of Seismic Fragility of Weir Structures in South Korea”, Mathematical Problems in Engineering, Vol. 2015, 2015.
 ABAQUS, “Ver 6.13, Dassault Systemes”.
 R.P. Kennedy, C.A. Cornell, R.D. Campbell, S. Kaplan, and H.F. Perla, “Probabilistic seismic safety study of an existing nuclear power plant,” Nuclear Engineering and Design, 59, pp. 315-338, 1980
 Electric Power Research Institute (EPRI), “Methodology for developing seismic fragilities,” TR-103959 Research Project, 1994
 J. Park and E. Choi, “Fragility analysis of track-on steel-plate-girder railway bridges in Korea,” Engineering Structures, 33, pp. 696-705, 2011
 M. Shinozuka, S.H. Kim, S. Kushiyama, J.H. Yi, “Nonlinear static procedure for fragility curve development,” ASCE Journal of Engineering Mechanics, 1126, pp. 1287-1295, 2000
 J. Li, B.F. Spencer, and A.S. Elnashai, “Bayesian updating of fragility functions using hybrid simulation,” ASCE Journal of Structural Engineering, 2012
 B.S. Ju, S.T. Taninada, A. Gupta, “Fragility analysis of threaded T-joint connections in hospital piping systems,” Proceedings of the ASME 2011 Pressure Vessel and Piping Division Conference, Baltimore, Maryland, USA, 2011.
 B.S. Ju, W.Y. Jung, “Seismic fragility evaluation of multi-branch piping systems installed in critical low-rise buildings,” Disaster Advance, 6(4), pp. 59-65, 2013.
 B.S. Ju, and W.Y. Jung, “Probabilistic risk assessment: Piping fragility due to earthquake fault mechanisms,” Mathematical Problems in Engineering, 2014, submitted.
 R.P. Kennedy and M.K. Ravindra, “Seismic fragilities for nuclear power plant studies,” Nuclear Engineering and Design, 79(1), pp. 47-68, 1984
 KCI committee, “Concrete Design Criteria in Korea,” Korea Concrete Institute (KCI), 2012.
 Ministry of Land, Transportation and Maritime Affairs, “Korea Dam Design Code,” Korea Water Resources Association, 2011.