| Title |
Seismic Fragility Analysis of Concrete Bridges Considering the Lap Splices of T-type Column |
| Authors |
안효준(An, Hyojoon) ; 조백순(Cho, Baiksoon) ; 박주현(Park, Ju-Hyun) ; 이종한(Lee, Jong-Han) |
| DOI |
https://doi.org/10.12652/Ksce.2023.43.3.0287 |
| Keywords |
콘크리트 교각; 겹침이음; 수치해석 모델링; 지진취약도 Concrete column; Lap splice; Numerical modeling; Seismic fragility |
| Abstract |
The collapse of bridges due to earthquakes results in many casualties and property damages. Thus, accurate prediction and preparation are required for the behavior of bridges during earthquakes. In particular, columns play an important role in the seismic behavior of bridges. The risk of collapse due to an earthquake increases when there is a problem of the insufficient lap splice in the column. In this study, to analyze the characteristics of the lap splice in the column, a numerical model was defined for the insufficient lap-spliced columns and verified using experimental data. The developed column model was applied to a commonly used RC slab bridge. Nonlinear static analysis for the column was performed to evaluate the change in the performance of the column according to the lap-spliced length. In addition, this study assessed the effect of the lap-spliced length on the seismic fragility analysis. |