Experimental Study on Effect of Reinforcement Corrosion on Natural Frequency and Damping Ratio of Reinforced Concrete Structures(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2017年06期
- Page:
- 59-64
- Research Field:
- Publishing date:
Info
- Title:
- Experimental Study on Effect of Reinforcement Corrosion on Natural Frequency and Damping Ratio of Reinforced Concrete Structures
- Author(s):
- TANG Hong-wei; GU Wei
- School of Civil Engineering, Shandong University
- Keywords:
- reinforced concrete structure; reinforcement corrosion; dynamic property; natural frequency; damping ratio
- PACS:
- -
- DOI:
- -
- Abstract:
- In view of reinforcement corrosion degrading earthquake-resistance performance and durability of reinforced concrete structures and effecting their dynamic properties as well, natural corrosion process of reinforcement was simulated in the laboratory using accelerated electrochemical corrosion technique and controlling corrosion degree with Faraday’s Law, and the theoretical corrosion degree of steel is divided into three stages: 5%, 10% and 15%. The effects of reinforcement corrosion on natural frequency and damping ratio of reinforced concrete structures were examined by means of free vibration attenuation characteristics of cantilever beams and the free attenuation method. The results show that reinforcement corrosion has great effects on natural frequency and damping ratio of reinforced concrete beam, the damping ratio increases with the corrosion level while natural frequency decreases. The damping ratio can be used as the damage index for the concrete structure corrosion damage detection.
Last Update: 2017-11-30