原文传递
Analytical Evaluation of Corrosion-Induced Strength Degradation in Prestressed Bridge Girders
| 题名： | Analytical Evaluation of Corrosion-Induced Strength Degradation in Prestressed Bridge Girders |
| 正文语种： | eng |
| 作者： | Mojtaba Aliasghar-Mamaghani;Ioannis Koutromanos;Carin Roberts-Wollmann;Matthew Hebdon |
| 作者单位： | Virginia Polytechnic Institute and State Univ.;Virginia Polytechnic Institute and State Univ.;Virginia Polytechnic Institute and State Univ.;Univ. of Texas at Austin |
| 关键词： | Corrosion;Prestressed girder;Bridge girder;Flexural capacity;Shear capacity;Computational simulation;Beam model;Truss model |
| 摘要： | Abstract This paper uses nonlinear analysis to determine the impact of corrosion-induced damage on the load-carrying capacity of prestressed concrete bridge girders. The analyses rely on two types of models, namely, beam models and nonlinear truss models. The latter are deemed necessary to obtain reliable estimates of the shear capacity, as beam models are not well-tailored for capturing shear failures. A procedure to account for the reduction in area and deformability of corroded strands, based on visually observed corrosion damage, is proposed and implemented. The models are calibrated and validated with the results of experimental tests on prestressed girders, which exhibited varying levels of corrosion-induced damage. Further analyses allow the comparison of the capacity of corrosion-damaged girders to that of their undamaged counterparts. The accuracy of a simplified procedure, using equations in the AASHTO code to determine the flexural and shear capacity of the damaged girders, is also determined. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 11 |
| 页码： | 1-16 |
相关文献
- Flexural Behavior of Full-Scale, Carbon-Fiber-Reinforced Polymer Prestressed Concrete Beams
- Flexural Behavior of Full-Scale, Carbon-Fiber-Reinforced Polymer Prestressed Concrete Beams
- Flexural Behavior of Full-Scale, Carbon-Fiber-Reinforced Polymer Prestressed Concrete Beams
- Prestress Loss Diagnostics in Pretensioned Concrete Structures with Corrosive Cracking
- Prediction of Time to Corrosion-Induced Concrete Cracking Based on Fracture Mechanics Criteria
- Machine Learning–Based Reliability Analysis of Structural Concrete Cracking Considering Realistic Nonuniform Corrosion Development
检索历史
应用推荐
