Effect of Transverse Steel on the Response of RC Beams Strengthened in Shear by FRP: Experimental Study

Grande, Ernesto; Imbimbo, Maura; Rasulo, Alessandro

doi:10.1061/(asce)1090-0268(2009)13:5(405)

Cited by 73 publications

(25 citation statements)

References 17 publications

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“…Internal steel stirrups which are intersected by major shear crack may not reach yield when it reaches to its ultimate failure load [2,3]. Grande et al [14] carried out an experimental investigation into the influence of transverse steel reinforcement on the contribution of FRP to the shear resistance. Fifteen RC beams were manufactured; each beam varies in terms of the amount of transverse steel ratio provided and FRP strengthening schemes.…”

Section: Mechanisms Of Shear Resistance Of Externally Bonded Frp Sheamentioning

confidence: 99%

Interaction between Internal Shear Reinforcement and External FRP Systems of RC Beams: Experimental Study

Teo¹,

Hing²,

Liew³

2017

TOCIEJ

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Abstract:Extensive research effort has been conducted on the shear strengthening of reinforced concrete (RC) beams with externally bonded FRP systems. However, there are still few aspects on their behaviour that are yet to be fully understood. One of them is the effect of shear interaction between internal transverse shear reinforcement and the external FRP systems. This paper is intended to study experimentally the interaction between these two shear reinforcement components. To do so, a total of five concrete beams were assembled in this investigation. All beams were properly instrumented in order to obtain as much data as possible. Four beams were externally strengthened with FRP with different strengthening and wrapping schemes. Their influence and interaction with the internal transverse stirrups in shear resistance were discussed based on the modes of failure exhibited, deflection and strain (steel and FRP) responses. Overall the results obtained are in good agreement with many researches which indicated that addition of externally bonded FRP, as a matter of fact, preserves the integrity of internal transverse stirrups. With continuous FRP sheets and U-wrapped scheme, greater FRP contribution to the shear resistance can be expected.

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Section: Mechanisms Of Shear Resistance Of Externally Bonded Frp Sheamentioning

confidence: 99%

Interaction between Internal Shear Reinforcement and External FRP Systems of RC Beams: Experimental Study

Teo¹,

Hing²,

Liew³

2017

TOCIEJ

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“…The fasteners were arranged on single or multiple rows (1,2,4) according to aligned (''-a'') or staggered (''-s'') configurations or combinations thereof (''a-s'').…”

Section: Validation Of the Proposed Modelmentioning

confidence: 99%

“…It consists of pre-cured FRP laminates with enhanced bearing strength, which can be fastened to the external surface of concrete members through steel anchors [2]. This technique is particularly fit for emergency repairs, where ease of installation and reversibility are primary requirements [3] and cannot be achieved through externally-bonded (EB) strips which are now widely used for both shear and flexural strengthening [4,5].…”

Section: Introductionmentioning

confidence: 99%

A 1D finite element model for the flexural behaviour of RC beams strengthened with MF-FRP strips

Martinelli¹,

Napoli²,

Nunziata³

et al. 2014

Composite Structures

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“…Among these, the influence of the transverse steel reinforcement and of the slenderness ratio on the resistance mechanism of RC beams strengthened in shear by FRP is certainly an important issue. Indeed, the results emerged from recent experimental studies [16][17][18][19][20][21][22][23][24][25][26][27][28][29] have clearly pointed out that an interaction exists between the resisting mechanisms provided by steel stirrups and FRP. However, the theoretical formulations proposed by the actual codes for evaluating the shear contribution of FRP reinforcement neglect this aspect with the consequence of overestimating the contribution of FRP to shear resistance in some circumstances.…”

Section: Introductionmentioning

confidence: 99%

Experimental Response of RC Beams Strengthened in Shear by FRP Sheets

Grande¹

2013

TOCIEJ

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The paper discusses the results of an experimental investigation carried out on reinforced concrete (RC) beams strengthened in shear by externally bonded fiber reinforced plastic (FRP) sheets. The study is devoted to analyze the role that the transverse steel reinforcement and the beam slenderness ratio could play on the resistant mechanism of RC beams strengthened in shear by FRP composites. The results are summarized and analyzed in detail in the paper in terms of shear capacity, cracking pattern and shear resisting contribution of FRP.

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Effect of Transverse Steel on the Response of RC Beams Strengthened in Shear by FRP: Experimental Study

Cited by 73 publications

References 17 publications

Interaction between Internal Shear Reinforcement and External FRP Systems of RC Beams: Experimental Study

Interaction between Internal Shear Reinforcement and External FRP Systems of RC Beams: Experimental Study

A 1D finite element model for the flexural behaviour of RC beams strengthened with MF-FRP strips

Experimental Response of RC Beams Strengthened in Shear by FRP Sheets

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