| Title |
External Post-tensioning Strengthening of Composite Girder Bridge Using Lateral Distribution of Post-tensioning Force |
| Keywords |
composite girder bridge;external post-tensioning;lateral distribution behavior;강합성형교;외부 후 긴장;횡분배 거동 |
| Abstract |
This study analyzes the lateral distribution behavior of external post-tensioning force and evaluates the possibility of strengthening the servicing composite girder bridge by adopting the external post-tensioning force to the parts of the bridge girder. From the results of experiments and analyses, it is founded that the composite girder bridge can be strengthened by applying the external post-tensioning force to the parts of the bridge girder. It is also proved that bracing improve the lateral distribution behavior of post-tensioning force. The lateral distribution behavior of post-tensioning force which influenced by stiffness ratio, girder spacing and span length is changed by the bridge type and the location of tensioned girder. From the results of analyses, set up an equation which can predict the lateral distribution behavior of external post-tensioning force and evaluate the rationality |