Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements

This paper provides a critical probabilistic evaluation of shear strength design code provisions for reinforced concrete (RC) beams with shear reinforcements under different strength combinations of steel reinforcements and concrete. Based on the modified compression field theory (MCFT), a probabili...

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Main Authors: Yu, Bo, Sang, Bujiu, Tao, Xiaolei, 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/10356/161838
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1618382022-09-21T05:33:58Z Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements Yu, Bo Sang, Bujiu Tao, Xiaolei Li, Bing School of Civil and Environmental Engineering Engineering::Civil engineering Reinforced Concrete Beam Probabilistic Shear Strength Model This paper provides a critical probabilistic evaluation of shear strength design code provisions for reinforced concrete (RC) beams with shear reinforcements under different strength combinations of steel reinforcements and concrete. Based on the modified compression field theory (MCFT), a probabilistic shear strength model for RC beams with shear reinforcements was proposed by taking into account the influences of contribution ratio for shear strength between concrete and stirrup, constitutive law of cracked concrete, and uncertainty in influencing coefficient of shear reinforcement. Then the accuracy and applicability of three typical shear strength design code provisions under different strength combinations of steel reinforcements and concrete were evaluated based on the confidence interval determined by the proposed probabilistic shear strength model. Meanwhile, the influences of material strength of steel reinforcements and concrete on confidence level of three typical shear strength design code provisions were also investigated. Finally, three typical shear strength design code provisions for RC beams were modified to improve the computational accuracy based on the characteristic values of correction factor under different strength combinations of steel reinforcements and concrete. 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 (Grant No. 2019GXNSFFA245004) and the Natural Science Foundation of Guangxi Province (Grant No. 2018GXNSFAA281344) is gratefully acknowledged. 2022-09-21T05:33:57Z 2022-09-21T05:33:57Z 2022 Journal Article Yu, B., Sang, B., Tao, X. & Li, B. (2022). Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements. Engineering Structures, 256, 114027-. https://dx.doi.org/10.1016/j.engstruct.2022.114027 0141-0296 https://hdl.handle.net/10356/161838 10.1016/j.engstruct.2022.114027 2-s2.0-85126086647 256 114027 en Engineering Structures © 2022 Published by Elsevier 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
Reinforced Concrete Beam
Probabilistic Shear Strength Model
spellingShingle Engineering::Civil engineering
Reinforced Concrete Beam
Probabilistic Shear Strength Model
Yu, Bo
Sang, Bujiu
Tao, Xiaolei
Li, Bing
Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements
description This paper provides a critical probabilistic evaluation of shear strength design code provisions for reinforced concrete (RC) beams with shear reinforcements under different strength combinations of steel reinforcements and concrete. Based on the modified compression field theory (MCFT), a probabilistic shear strength model for RC beams with shear reinforcements was proposed by taking into account the influences of contribution ratio for shear strength between concrete and stirrup, constitutive law of cracked concrete, and uncertainty in influencing coefficient of shear reinforcement. Then the accuracy and applicability of three typical shear strength design code provisions under different strength combinations of steel reinforcements and concrete were evaluated based on the confidence interval determined by the proposed probabilistic shear strength model. Meanwhile, the influences of material strength of steel reinforcements and concrete on confidence level of three typical shear strength design code provisions were also investigated. Finally, three typical shear strength design code provisions for RC beams were modified to improve the computational accuracy based on the characteristic values of correction factor under different strength combinations of steel reinforcements and concrete.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Yu, Bo
Sang, Bujiu
Tao, Xiaolei
Li, Bing
format Article
author Yu, Bo
Sang, Bujiu
Tao, Xiaolei
Li, Bing
author_sort Yu, Bo
title Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements
title_short Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements
title_full Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements
title_fullStr Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements
title_full_unstemmed Re-evaluation of shear strength design code provisions of RC beams with shear reinforcements
title_sort re-evaluation of shear strength design code provisions of rc beams with shear reinforcements
publishDate 2022
url https://hdl.handle.net/10356/161838
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