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http://dx.doi.org/10.15683/kosdi.2018.09.30.379

Seismic Fragility Analysis of Curved Beam with I-Shape Section  

Jeon, Juntai (Department of Civil&Environmental Engineering, INHA Technical College)
Ju, Bu-Seog (Department of Civil Engineering, Kyunghee University)
Son, Hoyoung (Department of Civil Engineering, Kyunghee University)
Publication Information
Journal of the Society of Disaster Information / v.14, no.3, 2018 , pp. 379-386 More about this Journal
Abstract
Purpose: This study was to the fragility evaluation of I-shape curved beam structure subjected to strong ground motions including Gyeongju and Pohang earthquakes Method: In particular, to conduct the analytical model, ABAQUS and ANSYS platform was used in this study. Furthermore, the analytical model using 3D Finite Element Model (FEM) was validated, in comparison to the theoretical solutions at the location of 025L, 05L, and 0.75L in static loading condition. In addition, in order to evaluate the seismic fragility of the curved beam structure, 20 seismic ground motions were selected and Monte-Carlo Simulation was used for the empirical fragility evaluation from 0.2g to 1.5g. Result: It was interesting to find that the probability of the system failure was found at 0.2g, as using 190 MPa limit state and the probability of the failure using 390 MPa limit state was starting from 0.6g. Conclusion: This study showed the comparison of the theoretical solution with analytical solution on I-shaped curved beam structures and it was interesting to note that the system subjected to strong ground motions was sensitive to high frequency earthquake. Further, the seismic fragility corresponding to the curved beam shapes must be evaluated.
Keywords
Curved Beam; Finite Element; Time History Analysis; Seismic Fragility; Monte-Carlo Simulation;
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