A Study on the Static and Dynamic Performance Evaluation of BH Girder Through Full-Scale Experiments

In this study, we tried to verify the performance of the BH girder, a new type of prestressed concrete (PSC) bulb-T shape with half-slab girder, as a part of the beneficial solution of long span highway and railway bridges. A 60-m-span BH girder was designed under the BS code. Finally, a 60-m-span specimen was manufactured and tested in Malaysia for static performance analysis. In addition, this paper also introduces the dynamic responses of the BH girder for railway bridges under Korean Railway Design Code. Railway bridge can cause dynamic problems because they suffer repetitive load due to the running train. In order to ensure the dynamic stability, railway bridges must thus satisfy thorough vibration limits as well as vertical deflection limits. In view of tendency to increase span, 45 m span of BH girder were adopted for double track and single track. All sections were designed under the Korean Railway Design Code, and three-dimensional modeling was built to be suitable for carrying out moving load analysis. Finally dynamic performance was analyzed compared to the limitations of the design criteria.