Numerical evaluation on the effect of steel bar corrosion on the cyclic behaviour of RC bridge piers
| Autor: | Nobuhiro Chijiwa, Kazuhide Nakayama, Rajib Kumar Biswas, Mistuyasu Iwanami |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Pier Materials science business.industry Numerical analysis 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Spall Steel bar 01 natural sciences Rc columns Corrosion Cracking Structural load 0103 physical sciences 0210 nano-technology business |
| Zdroj: | Materials Today: Proceedings. 44:2393-2398 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.12.453 |
| Popis: | Reinforced concrete (RC) bridges exposed to marine environments significantly suffer from steel bar corrosion. Steel bar corrosion is responsible for strength deterioration of steel and concrete material, damage in steel-concrete bond, spalling of cover concrete, and so on. This study presents a numerical model that can simulate the structural behavior of corroded RC bridge piers under seismic action. In the numerical model, corrosion-induced damage modelled through different constitutive laws for corrosion-induced cracking, concrete and steel properties, and bond between steel and concrete. The numerical model for RC bridge piers is validated using the experimental studies available in the literature. The structural behavior obtained in the numerical analysis, i.e., lateral load resistance capacity, cracking length and crack patterns are in good agreement with the experimental study. The analysis results demonstrated that rebar corrosion significantly deteriorates the structural performance (i.e., load resistance capacity, displacement capacity, etc.) of corroded RC bridge piers. The findings of this study will be useful in assessing the residual structural performance of the RC columns with rebar corrosion. |
| Databáze: | OpenAIRE |
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