Effects of bolt–plate arrangements on steel plate strengthened reinforced concrete beams

Su, R.K.L.; Siu, W.H.; Smith, Scott T

doi:10.1016/j.engstruct.2010.02.028

Cited by 48 publications

(33 citation statements)

References 13 publications

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“…The displacement ductility factor (h), which is defined in Equation (31) (Su, Siu, & Smith, 2010), is introduced to evaluate the ductility performance of the strengthened columns:…”

Section: Deformation and Ductilitymentioning

confidence: 99%

Flexural and axial strengthening of preloaded concrete columns under large eccentric loads by flat and precambered steel plates

Wang

2014

Structure and Infrastructure Engineering

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In this study, the behaviour of the preloaded reinforced concrete columns under large eccentric compression loading and strengthened with flat and precambered steel plates was investigated. An original analytical model considering the effects of stress-lagging induced by eccentric pre-compressed loading was developed to predict the ultimate load capacity of platestrengthened columns. Then, 10 specimens with different eccentricities, plate thicknesses and initial precamber displacements were tested. The strength, deformability, ductility and moment-curvature response of the strengthened columns were examined, and the effectiveness of this approach was validated. The good agreement between the analytical and experimental results demonstrates that the proposed analytical model can accurately predict the load-carrying capacity of the plate-strengthened columns under large eccentric compression loading.

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“…The displacement ductility factor (h), which is defined in Equation (31) (Su, Siu, & Smith, 2010), is introduced to evaluate the ductility performance of the strengthened columns:…”

Section: Deformation and Ductilitymentioning

confidence: 99%

Flexural and axial strengthening of preloaded concrete columns under large eccentric loads by flat and precambered steel plates

Wang

2014

Structure and Infrastructure Engineering

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“…where ε c,top gauge is the average of the strain gauge readings from the top reinforcement in the constant moment zone, φ c is the average curvature of concrete in the constant moment zone as estimated by LVDTs [8], h p is the depth of the centroidal level of the steel plate, and d c,top gauge is the depth of the top reinforcement where the strain gauge is attached.…”

Section: Variation Of Strain Factor Of the Critical Sectionmentioning

confidence: 99%

Effects of plastic hinges on partial interaction behaviour of bolted side-plated beams

Siu

2010

Journal of Constructional Steel Research

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a b s t r a c tSlips of mechanical connectors in steel plate reinforced concrete (RC) structures can significantly affect the load-carrying capacity of the structures. The difference in deformation between the steel plate and the reinforced concrete counterpart is known as partial interaction. In this study, the flexural behaviour of bolted side-plated (BSP) reinforced concrete beams was investigated experimentally. Two new deformation-based parameters, namely the strain factor and curvature factor, were introduced to quantify the degree of partial interaction between the RC beam and the steel plates. The experimental results revealed that the degree of partial interaction between RC beams and steel plates could be reduced by as much as 50% when the BSP beam proceeded from a linear to a non-linear stage in which plastic hinges have formed in critical sections. Consequently, the load-carrying capacity was reduced by up to 30% of the theoretical additional strength provided by the bolt-plate system, which is more than double the allowance proposed previously in the literature. The under-estimation of the effect of partial interaction in composite structures can result in unsafe design.

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“…Jedna od poteškoća u postupku ojačavanja AB konstrukcija je odabir metode ojačanja koja će osigurati poboljšanje nosivosti i uporabljivosti ojačavane građevine. Radi ojačanja konstrukcijskih elemenata, projektanti se najčešće odlučuju za vanjske obloge od čelika [2][3][4][5][6], ploče od polimera ojačanog vlaknima (eng. Fibre Reinforced Polymer -FRP) [7][8][9] te AB obloge [10][11][12][13][14][15].…”

Section: Uvodunclassified

“…Nonlinear finite element analyses -NLFEA) uspoređeni su s rezultatima ispitivanja, te je predložen izraz za izračunavanje granične nosivosti. Su i dr. [6] eksperimentalno su odredili učinkovitost betonskih greda bočno ojačanih vijčano spojenim čeličnim pločama, i to za različite varijante rasporeda matica. Uočeno je da raspored matica ima dominantan utjecaj na duktilnost greda u pogledu poslijeelastičnog povećanja čvrstoće i duktilnosti pomaka.…”

Section: Uvodunclassified

Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom

2015

JCE

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Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom U radu se analizira ponašanje AB greda ojačanih predgotovljenim AB pločama pravokutnog i U-presjeka. Provedeno je eksperimentalno istraživanje s ciljem ocjenjivanja učinkovitosti ojačanja predgotovljenim pločama. To je istraživanje popraćeno i 2-D nelinearnom analizom uz primjenu metode konačnih elemenata (NLFEA). Rezultati NLFEA analize su pokazali dobro podudaranje s rezultatima ispitivanja. Smatra se da je predloženi postupak dobra alternativa ojačanju pomoću AB obloga te da je taj postupak praktičan, ekonomičan i pouzdan za zgrade ili mostove s većim brojem jednakih greda. RC beam strengthening using precast RC plate bonding techniqueThe behaviour of RC beams strengthened with precast RC plates of rectangular and U cross-section is studied in the paper. An experimental investigation was conducted to assess effectiveness of strengthening with precast plates. The investigation was supported with the 2-D nonlinear finite element analysis (NLFEA). The NLFEA results showed a good level of correlation with test results. The proposed technique is considered to be a good alternative to RC jacketing and the technique is practical, economical and reliable for buildings or bridges with a greater number sisof similar beams.

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Effects of bolt–plate arrangements on steel plate strengthened reinforced concrete beams

Cited by 48 publications

References 13 publications

Flexural and axial strengthening of preloaded concrete columns under large eccentric loads by flat and precambered steel plates

Flexural and axial strengthening of preloaded concrete columns under large eccentric loads by flat and precambered steel plates

Effects of plastic hinges on partial interaction behaviour of bolted side-plated beams

Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom

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