Shear Strength of One-Way Concrete Slabs Reinforced with Fiber-Reinforced Polymer Composite Bars

El-Sayed, Ahmed K.; El-Salakawy, Ehab; Benmokrane, Brahim

doi:10.1061/(asce)1090-0268(2005)9:2(147)

Cited by 116 publications

(49 citation statements)

References 4 publications

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“…Based on the previous research studies, the basic effective parameters that affecting the shear capacity of FRP-RC beams are the width of web (b w ), effective depth of beam (d), shear span to depth ratio (a/d), concrete compressive strength (f c ′ ), longitudinal reinforcement ratio (ρ f ) and elastic modulus of FRP bars (E f ) [35,[45][46][47][48][49]. An experimental database of 138 test specimens failed in shear was obtained from different previous investigations [31,36,45,47,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65]. During the collection stage, specimens with shear span to depth ratios between 2.4 and 6.5 were included but deeper and slender beams were omitted from the database.…”

Section: Experimental Datamentioning

confidence: 99%

A feasibility study of BBP for predicting shear capacity of FRP reinforced concrete beams without stirrups

Golafshani

Ashour

2016

Advances in Engineering Software

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Shear failure of concrete elements reinforced with Fiber Reinforced Polymer (FRP) bars is generally brittle, requiring accurate predictions to avoid it. In the last decade, a variety of artificial intelligence based approaches have been successfully applied to predict the shear capacity of FRP Reinforced Concrete (FRP-RC). In this paper, a new approach, namely, biogeography-based programming (BBP) is introduced for predicting the shear capacity of FRP-RC beams based on test results available in the literature. The performance of the BBP model is compared with several shear design equations, two previously developed artificial intelligence models and experimental results. It was found that the proposed model provides the most accurate results in calculating the shear capacity of FRP-RC beams among the considered shear capacity models. The proposed BBP model can also correctly predict the trend of different influencing variables on the shear capacity of FRP-RC beams.

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Section: Experimental Datamentioning

confidence: 99%

A feasibility study of BBP for predicting shear capacity of FRP reinforced concrete beams without stirrups

Golafshani

Ashour

2016

Advances in Engineering Software

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“…Bu çalışma kapsamında toplam 206 adet FRP donatılı betonarme elemanların kesme dayanımı literatürden elde edilmiş [2,[12][13][14][15][16] Deneysel olarak yüklemeye tabi tutulmuş FRP donatılı betonarme elemanlar dikdörtgen kesitli, a/d oranı 2,5'den büyük, basit mesnetli, simetrik olarak iki noktasal yük etkisi altındaki kiriş ve döşemelerden oluşan elemanlardır. Betonarme elemanların 160 adeti kayma donatısız olup diğer 46 eleman ise FRP donatılı kayma donatısına sahip elemanlardan oluşmaktadır.…”

Section: Deneysel Verilerunclassified

Eni̇ne Ve Boyuna FRP Donatili Betonarme Ki̇ri̇şleri̇n Kesme Dayanimi

Kara

Cullazoğlu

Severcan

2016

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZBu çalışmada lif takviyeli polimer donatılar (FRP) içeren kayma donatılı ve kayma donatısız betonarme kirişlerin kesme dayanımı için literatürden elde edilen 206 adet deney sonucu da göz önünde bulundurularak farklı modeller önerilmiş ve bu modellerden elde edilen sonuçların deneysel sonuçlarla karşılaştırılması yapılmıştır. Çalışma kapsamında ayrıca farklı ülke yönetmelikleri tarafından FRP donatılı betonarme kirişlerin kesme dayanımı için geliştirilen modellerin deneysel sonuçlarla karşılaştırılması yapılarak bu modellerin uygulanabilirliği de belirlenmeye çalışılmıştır. ACI 440.1R-15 tarafından önerilen denklem ile elde edilen sonuçların malzeme dayanımındaki azaltma katsayıları kullanmadan bile gereğinden fazla güvenli yönde sonuçlar verdiği görülmüştür. BISE tarafından gerek kayma donatısız gerekse kayma donatılı betonarme kirişlerin kesme dayanımı için önerilen modellerin yönetmelikler içerisinde en uygun sonucu verdiği belirlenmiştir. Bu çalışmada önerilen modellerin yönetmeliklere göre daha iyi sonuçlar verdiği görülmüştür.Anahtar Kelimeler: Lifli polimer donatı, kesme dayanımı, betonarme kiriş, kayma donatısı SHEAR STRENGTH OF REINFORCED CONCRETE BEAMS REINFORCED WITH TRANSVERSE AND LONGITUDINAL FRP BARS ABSTRACTIn the present study, simplified empirical expressions for the shear capacity of FRP reinforced concrete beams with and without stirrups accounting for most influential parameters were proposed using a large database of 206 specimens collected from the literature. The equations of six existing design standards for shear capacity of FRP reinforced concrete beams have also been evaluated using the large database collected. The shear provision of ACI 440.1R-15 method for FRP reinforced concrete beams gave conservative predictions even without applying reduction factors. BISE model gave the most accurate results for the shear strength of FRP-reinforced concrete beams among the shear design standards. The proposed equations also gave more accurate results for shear capacity predictions for a wide range of FRP reinforced concrete beams than the shear design standards.

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“…In addition to the six new test results from the current investigation, the shear strength results of 128 FRP reinforced concrete elements without stirrups were collected from published literature [7][8][9][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]] to evaluate the current shear design guidelines and calibrate the proposed equation in this study. Only rectangular, simply supported beams and slabs that exhibited shear failure were considered.…”

Section: Experimental Databasementioning

confidence: 99%

Size effect on shear strength of FRP reinforced concrete beams

Ashour

Kara

2014

Composites Part B: Engineering

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This paper presents test results of six concrete beams reinforced with longitudinal carbon fiber reinforced polymer (CFRP) bars and without vertical shear reinforcement. All beams were tested under a two-point loading system to investigate shear behavior of CFRP reinforced concrete beams. Beam depth and amount of CFRP reinforcement were the main parameters investigated. All beams failed due to a sudden diagonal shear crack at almost 45 o . A simplified, empirical expression for the shear capacity of FRP reinforced concrete members accounting for most influential parameters is developed based on the design-by-testing approach using a large database of 134 specimens collected from the literature including the beams tested in this study. The equations of six existing design standards for shear capacity of FRP reinforced concrete beams have also been evaluated using the large database collected.

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Shear Strength of One-Way Concrete Slabs Reinforced with Fiber-Reinforced Polymer Composite Bars

Cited by 116 publications

References 4 publications

A feasibility study of BBP for predicting shear capacity of FRP reinforced concrete beams without stirrups

A feasibility study of BBP for predicting shear capacity of FRP reinforced concrete beams without stirrups

Eni̇ne Ve Boyuna FRP Donatili Betonarme Ki̇ri̇şleri̇n Kesme Dayanimi

Size effect on shear strength of FRP reinforced concrete beams

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