Abstract
The girder end in steel bridges is easily deteriorated by the corrosion and is deeply related to the bridge’s resiliency. Repair of girder end is sometimes conducted from one side considering a workspace and corrosion extent. This study conducts FEA to evaluate the resistance of intact, corroded and repaired girder and to investigate structural configurations of doubler plates for enhancing its repair effect. Numerical results reveal that if the one-sided repair is conducted appropriately, girder end resistance can be recovered to the initial sound state. It is desirable to adopt double-lap connections with angles as a one-sided repair. The clearance between lower flange and doubler plate’s end decreases repair effects when it is more than the yield deformation of corroded cruciform column, being effective bearing part above the support. Finally, filler plates should be inserted to faying surfaces between doubler plates and targeted girder to avoid fillet weld metal or clearance.
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