Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams

Through proper arranging of a hybrid combination of longitudinal fiber reinforced polymer (FRP) bars and steel bars in the tensile region of the beam, the advantages of both FRP and steel materials can be sufficiently exploited to enhance the flexural capacity and ductility of a concrete beam. In th...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Binbin Zhou, Ruo-Yang Wu, Yangqing Liu, Xiaohui Zhang, Shiping Yin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hybrid reinforced concrete beams flexural failure modes nominal flexural strength strength reduction factor ductility analysis Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/4c23ec5a278544ef936ca429f1ff5f2d
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4c23ec5a278544ef936ca429f1ff5f2d
record_format	dspace
spelling	oai:doaj.org-article:4c23ec5a278544ef936ca429f1ff5f2d2021-11-11T17:58:37ZFlexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams10.3390/ma142164001996-1944https://doaj.org/article/4c23ec5a278544ef936ca429f1ff5f2d2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6400https://doaj.org/toc/1996-1944Through proper arranging of a hybrid combination of longitudinal fiber reinforced polymer (FRP) bars and steel bars in the tensile region of the beam, the advantages of both FRP and steel materials can be sufficiently exploited to enhance the flexural capacity and ductility of a concrete beam. In this paper, a methodology for the flexural strength design of hybrid FRP-steel reinforced concrete (RC) beams is proposed. Firstly, based on the mechanical features of reinforcement and concrete and according to the latest codified provisions of longitudinal reinforcement conditions to ensure ductility level, the design-oriented allowable ranges of reinforcement ratio corresponding to three common flexural failure modes are specified. Subsequently, the calculation approach of nominal flexural strength of hybrid FRP-steel RC beams is established following the fundamental principles of equilibrium and compatibility. In addition to the common moderately-reinforced beams, the proposed general calculation approach is also applicable to lightly-reinforced beams and heavily-reinforced beams, which are widely used but rarely studied. Furthermore, the calculation process is properly simplified and the calculation accuracy is validated by the experimental results of hybrid FRP-steel RC beams in the literature. Finally, with the ductility analysis, a novel strength reduction factor represented by net tensile steel strain and reinforcement ratio is proposed for hybrid FRP-steel RC beams.Binbin ZhouRuo-Yang WuYangqing LiuXiaohui ZhangShiping YinMDPI AGarticlehybrid reinforced concrete beamsflexural failure modesnominal flexural strengthstrength reduction factorductility analysisTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6400, p 6400 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hybrid reinforced concrete beams flexural failure modes nominal flexural strength strength reduction factor ductility analysis Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	hybrid reinforced concrete beams flexural failure modes nominal flexural strength strength reduction factor ductility analysis Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Binbin Zhou Ruo-Yang Wu Yangqing Liu Xiaohui Zhang Shiping Yin Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams
description	Through proper arranging of a hybrid combination of longitudinal fiber reinforced polymer (FRP) bars and steel bars in the tensile region of the beam, the advantages of both FRP and steel materials can be sufficiently exploited to enhance the flexural capacity and ductility of a concrete beam. In this paper, a methodology for the flexural strength design of hybrid FRP-steel reinforced concrete (RC) beams is proposed. Firstly, based on the mechanical features of reinforcement and concrete and according to the latest codified provisions of longitudinal reinforcement conditions to ensure ductility level, the design-oriented allowable ranges of reinforcement ratio corresponding to three common flexural failure modes are specified. Subsequently, the calculation approach of nominal flexural strength of hybrid FRP-steel RC beams is established following the fundamental principles of equilibrium and compatibility. In addition to the common moderately-reinforced beams, the proposed general calculation approach is also applicable to lightly-reinforced beams and heavily-reinforced beams, which are widely used but rarely studied. Furthermore, the calculation process is properly simplified and the calculation accuracy is validated by the experimental results of hybrid FRP-steel RC beams in the literature. Finally, with the ductility analysis, a novel strength reduction factor represented by net tensile steel strain and reinforcement ratio is proposed for hybrid FRP-steel RC beams.
format	article
author	Binbin Zhou Ruo-Yang Wu Yangqing Liu Xiaohui Zhang Shiping Yin
author_facet	Binbin Zhou Ruo-Yang Wu Yangqing Liu Xiaohui Zhang Shiping Yin
author_sort	Binbin Zhou
title	Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams
title_short	Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams
title_full	Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams
title_fullStr	Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams
title_full_unstemmed	Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams
title_sort	flexural strength design of hybrid frp-steel reinforced concrete beams
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4c23ec5a278544ef936ca429f1ff5f2d
work_keys_str_mv	AT binbinzhou flexuralstrengthdesignofhybridfrpsteelreinforcedconcretebeams AT ruoyangwu flexuralstrengthdesignofhybridfrpsteelreinforcedconcretebeams AT yangqingliu flexuralstrengthdesignofhybridfrpsteelreinforcedconcretebeams AT xiaohuizhang flexuralstrengthdesignofhybridfrpsteelreinforcedconcretebeams AT shipingyin flexuralstrengthdesignofhybridfrpsteelreinforcedconcretebeams
_version_	1718431939995631616

Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams

Ejemplares similares