Recently, many people and property have been damaged by the collapse of facilities due to earthquakes in Asian countries including Japan, China, and many other places around the world. In Korea, there is an earthquake trend is increasing as well, especially in 2016 Gyeongju 9km south southwest after another earthquake occurred in the region of 5.8 to 5.1 and a scale reminded the seriousness earthquake risk.
If an earthquake of this magnitude occurs, the damage to the SOC facility will be very huge, and it is expected that there will be a serious social situation. In the case of socially important SOC facilities, securing the structural safety against seismic loads is an economically important issue.
Therefore, for bridges in high-speed railway bridges had been constructed before the current seismic design criteria, the ability to resist earthquakes was evaluated, and for bridges that required seismic performance to be adequately reflected.
In order to evaluate the seismic performance more economically and rationally, preliminary evaluation is carried out for the prioritization of detail evaluation. In this study, we proposed a method of evaluation of vulnerability and seismic grouping considering prevailing characteristics of bridges. In addition, detailed evaluation of the seismic performance was carried out through the preliminary evaluation results and the detailed evaluation of the bridge.