Theoretical and practical models for shear strength of corroded reinforced concrete columns

In order to predict the shear strength of corroded reinforced concrete column (CRCC) accurately and efficiently, both theoretical and practical models for shear strength of the CRCC were established through theoretical derivation and experimental validation. The deterioration mechanism for shear str...

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Main Authors: Yu, Bo, Ding, Zihao, Liu, Shengbin, Li, Bing
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/162518
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1625182022-10-26T06:33:04Z Theoretical and practical models for shear strength of corroded reinforced concrete columns Yu, Bo Ding, Zihao Liu, Shengbin Li, Bing School of Civil and Environmental Engineering Engineering::Civil engineering Corrosion Shear Strength In order to predict the shear strength of corroded reinforced concrete column (CRCC) accurately and efficiently, both theoretical and practical models for shear strength of the CRCC were established through theoretical derivation and experimental validation. The deterioration mechanism for shear strength of the CRCC due to the steel reinforcement corrosion was explored first based on the shear mechanism analysis of the truss-arch model. Then a theoretical model for shear strength of the CRCC was developed by taking into account the influences of steel reinforcement corrosion on the effective yield strength of transverse reinforcement, the effective cross-sectional area of both corroded transverse and longitudinal reinforcements as well as the effective concrete shear area. Meanwhile, three practical models to evaluate the shear strength of the CRCC were proposed based on 54 sets of experimental data by determining the approximate values of three important parameters, including the contribution coefficient of shear strength for concrete, the ratio of shear stiffness between the truss model and the arch model, as well as the tangent value of the critical crack angle. Finally, the accuracy and applicability of both theoretical and practical models for shear strength of the CRCC were validated by comparing with five existing empirical shear strength models. The financial support received from the National Natural Science Foundation of China (Grant Nos. 51668008 and 51738004), the Guangxi Science Fund for Distinguished Young Scholars (2019GXNSFFA245004) and the Natural Science Foundation of Guangxi Province (Grant No. 2018GXNSFAA281344) is gratefully acknowledged. 2022-10-26T06:33:04Z 2022-10-26T06:33:04Z 2021 Journal Article Yu, B., Ding, Z., Liu, S. & Li, B. (2021). Theoretical and practical models for shear strength of corroded reinforced concrete columns. Structural Engineering and Mechanics, 79(5), 565-578. https://dx.doi.org/10.12989/sem.2021.79.5.565 1225-4568 https://hdl.handle.net/10356/162518 10.12989/sem.2021.79.5.565 2-s2.0-85115218038 5 79 565 578 en Structural Engineering and Mechanics © 2021 Techno-Press, Ltd. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Corrosion
Shear Strength
spellingShingle Engineering::Civil engineering
Corrosion
Shear Strength
Yu, Bo
Ding, Zihao
Liu, Shengbin
Li, Bing
Theoretical and practical models for shear strength of corroded reinforced concrete columns
description In order to predict the shear strength of corroded reinforced concrete column (CRCC) accurately and efficiently, both theoretical and practical models for shear strength of the CRCC were established through theoretical derivation and experimental validation. The deterioration mechanism for shear strength of the CRCC due to the steel reinforcement corrosion was explored first based on the shear mechanism analysis of the truss-arch model. Then a theoretical model for shear strength of the CRCC was developed by taking into account the influences of steel reinforcement corrosion on the effective yield strength of transverse reinforcement, the effective cross-sectional area of both corroded transverse and longitudinal reinforcements as well as the effective concrete shear area. Meanwhile, three practical models to evaluate the shear strength of the CRCC were proposed based on 54 sets of experimental data by determining the approximate values of three important parameters, including the contribution coefficient of shear strength for concrete, the ratio of shear stiffness between the truss model and the arch model, as well as the tangent value of the critical crack angle. Finally, the accuracy and applicability of both theoretical and practical models for shear strength of the CRCC were validated by comparing with five existing empirical shear strength models.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Yu, Bo
Ding, Zihao
Liu, Shengbin
Li, Bing
format Article
author Yu, Bo
Ding, Zihao
Liu, Shengbin
Li, Bing
author_sort Yu, Bo
title Theoretical and practical models for shear strength of corroded reinforced concrete columns
title_short Theoretical and practical models for shear strength of corroded reinforced concrete columns
title_full Theoretical and practical models for shear strength of corroded reinforced concrete columns
title_fullStr Theoretical and practical models for shear strength of corroded reinforced concrete columns
title_full_unstemmed Theoretical and practical models for shear strength of corroded reinforced concrete columns
title_sort theoretical and practical models for shear strength of corroded reinforced concrete columns
publishDate 2022
url https://hdl.handle.net/10356/162518
_version_ 1749179155490013184