II-형 PC로 보강된 합성 판형교량의 성능개선 효과

Recently, existing ballastless open deck railway bridges have been reinforced to have ballasted track to reduce noise, vibration, maintenance costs etc. In this study it is intended to evaluate the performance of reinforcement of existing plate girder bridge with Ⅱ-shaped PC blocks. By analyzing the results of the numerical analysis and the measurement in the bridges with Ⅱ-shaped PC blocks the construction, it can be seen that the proposed new reinforcement method guarantees better structural safety and can reduce vibration and noised due to railway operation. The proposed PC composite plate girder bridge is applicable to various existing plate girder bridges, increases durability of bridges. Thus, it is expected that the maintenance costs of bridges can be devreased effectively.