International Session (Structural Engineering)

[CS2-28] Investigation on structural behavior of existing prestressed post-tensioned concrete bridge superstructure

〇Yizhou Yang¹, yasuhiko sato¹, Wanakorn Prayoonwet¹, Yoshinobu oshima² (1.Faculty of Science and Engineering, 2.Public Work Research Institute)

Keywords:Exisiting bridge, On-site loading test, Structural behavior, 3D-FEA

Investigation on structural behavior of existing prestressed post-tensioned concrete bridge superstructure
In the assessment of the residual service life of existing highway bridges, load-carrying capacity of old bridge superstructure have been studied and the excessive load capacity yet possessed in the superstructure was reported. However, the residual load capacity has not been accurately predicted. Moreover, experimental study on post-tensioned T-girder superstructure is still insufficient. In this study, field load test of an existing prestressed post-tension concrete bridge was conducted and analytical study was carried out by 3D-FEA.