Progressive collapse resistance mechanism of RC frame structure considering reinforcement corrosion

Bao, Chao and Lv, Dahai and Wang, Huxiang and Zhang, Yuhang and Ma, Xiaotong and Lim, Kar Sing and Zhang, Juping (2023) Progressive collapse resistance mechanism of RC frame structure considering reinforcement corrosion. Modelling and Simulation in Engineering, 2023 (4451011). pp. 1-21. ISSN 1687-5591. (Published)

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Corrosion causes reduction in cross-sectional area of reinforcement, deterioration of mechanical properties, and degradation of bonding properties between reinforced concrete, which are the most important factors leading to the degradation of structural service performance. In order to investigate the progressive collapse mechanism of a corroded reinforced concrete frame structure, the failure modes, characteristics of the vertical displacement, and load capacity are studied using the finite element method. Based on existing experimental research, the established model is verified, and the influence of different influencing factors on the progressive collapse mechanism is analyzed. The results show that the corrosion of the reinforcement affects the yield load, peak load, and ultimate load of the reinforced concrete substructure. As the corrosion rate increases, the tensile arch action shows a particularly severe deterioration. The variation of concrete strength and the height–span ratio affects the substructure’s load-bearing capacity much more significantly than the stirrup spacing.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Corrosion rate; Electrochemical corrosion; Reinforced concrete; Steel corrosion; Structural dynamics; Structural frames
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Faculty/Division: College of Engineering
Faculty of Civil Engineering Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 27 Dec 2023 03:47
Last Modified: 27 Dec 2023 03:47
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