Structural Performance Degradation of Corrosion-Damaged Reinforced Concrete Beams Based on Finite Element Analysis
- Title
- Structural Performance Degradation of Corrosion-Damaged Reinforced Concrete Beams Based on Finite Element Analysis
- Author
- 이강석
- Keywords
- reinforced concrete; corrosion; structural performance; degradation; finite element analysis; flexural beam; shear beam; seismic performance
- Issue Date
- 2022-02
- Publisher
- MDPI
- Citation
- APPLIED SCIENCES-BASEL, v. 12, NO 4, Page. 1-24
- Abstract
- The impact of the seismic performance of corrosion-damaged reinforced concrete (RC)
members on the overall seismic performance of the entire RC structure must be investigated. Related
research results provide important guidance for a more accurate seismic performance evaluation of
RC structures with corroded members including beams and columns. However, currently available
technologies for the seismic evaluation of existing RC structures do not consider the impact of reinforcement
corrosion-induced deterioration on the seismic performance of RC members. The main
focus of this study is on proposing a practical methodology to evaluate the seismic performance of
such buildings. More specifically, the proposed methodology enables a direct quantitative evaluation
of seismic performance by estimating the structural performance based on the strength and deformation
capacity of corroded members. In pursuit of this research background and the objectives, our
research team first performed an experimental study to estimate the impact of reinforcement corrosion
on the structural behavior of RC shear beams and flexural beams and determine the factors associated
with structural performance deterioration. A high correlation between the half-cell potential (HCP)
before and after reinforcement corrosion of RC beams and the structural performance degradation
factor based on the energy absorption capacity has been seen previously. In this study, a finite
element analysis (FEA) was conducted, in which bond strength loss between rebar and concrete due
to reinforcement corrosion of beam members was considered as one of the aging-related degradation
factors, and the correlation between structural performance degradation before and after corrosion
in beam members was studied. In addition, we compared and analyzed the results of the previous
experimental research and FEA conducted in this study and proposed a structural performance
degradation factor as a function of corrosion of shear and flexural beams. The research results
indicate that the FEA-derived bonding factor (b) and performance degradation factor (f) of flexural
beam can be approximated with the equation f = (0.36 b)1 +101 (R2 = 0.94), together with b–mV
(average potential difference in voltage) correlation mV = (1.36 b)/(0.018 0.05b). In the case
of shear beams, FEA resulted in f = 37.3b + 63, which enables regression approximation, showing
a high correlation (R2 = 0.98), together with b–mV correlation (mV = 932.5b 1075). Using the
mV–b–f correlation curves, the bonding factor (b) depending on the degree of corrosion of RC beam
members and the performance degradation factor (f) based on the consequent strength-deformation
capacity can be evaluated.
- URI
- https://www.proquest.com/docview/2632222442?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/171050
- ISSN
- 20763417
- DOI
- 10.3390/app12042090
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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