Condition Assessment of Corrosion-damaged Bridge Girders Strengthened with Post-tensioned Composite Strips

12th International Conference on Damage Assessment of Structures

Kim, Yail J.^1 ; Kang, Jae-Yoon^2 ; Park, Jong-Sup^2 ; Jung, Woo-Tai^2

Department of Civil Engineering, University of Colorado Denver, Denver

CO

80217, United States^1

Structural Engineering Research Division, SOC Research Institute, Korea Institute of Civil Engineering and Building Technology, Gyeonggi, Korea, Republic of^2

关键词: Carbon fiber reinforced polymer;    Computational model;    Condition assessments;    Condition evaluation;    Corrosion damage;    Damage localization;    Flexural stiffness;    Near surface mounted;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/842/1/012031/pdf
DOI  :  10.1088/1742-6596/842/1/012031

来源: IOP

【 摘 要 】

This paper presents the condition evaluation of bridge girders upgraded using post-tensioned near-surface-mounted (NSM) carbon fiber reinforced polymer (CFRP) strips subjected to corrosion damage. Computational models are developed to predict the behavior of the girders over a 100-year service period. Dynamic analysis exhibits that damage localization takes place, in conjunction with various mode shapes. As the extent of damage rises, the effectiveness of the NSM CFRP increases and the flexural stiffness of the girders decreases.