Analysis of side-plated reinforced concrete beams with partial interaction

Siu, W.H.; Su, R.K.L.

doi:10.12989/cac.2011.8.1.071

Cited by 11 publications

(15 citation statements)

References 14 publications

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“…Su and Zhu (2005) conducted experimental and numerical studies on BSP coupling beams and showed that small slips on the steel-concrete interface could significantly affect the overall response of BSP beams. Su and Siu proposed some numerical procedures for predicting the nonlinear load-deformation response of bolt groups (Su and Siu 2007;Siu and Su 2009) as well as the longitudinal and transverse slip profiles (Siu 2009;Siu and Su 2011) in BSP beams. Their predicted longitudinal slips were in good agreement with the test results obtained at some discrete locations on the beams .…”

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confidence: 99%

“…Roberts et al (1989) proposed a method to strengthen under-reinforced RC beams with a ρ stb of 1.21% by bolting steel plates to the beam soffit, Foley et al (1999) proposed a technique by bolting steel channels to the tension face of the lightly reinforced RC beams with a ρ st of 0.54%, Ruiz et al (1999) beams with a ρ st less than 0.3%, and Siu and Su (2011) studied the partial interaction of lightly reinforced BSP beams with a ρ st of 0.85%. In light of this situation, an improved strengthening technique is proposed for moderately reinforced RC beams in this study.…”

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confidence: 99%

“…In this study, an experimental study was conducted to investigate the strengthening effects of this method, to quantify the partial interaction and to measure the complete longitudinal and transverse slip profiles in BSP beams. The test results were compared with those of the lightly reinforced BSP beams tested previously (Siu 2009;Siu and Su 2011;Su et al 2010). …”

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Experimental Study of Moderately Reinforced Concrete Beams Strengthened with Bolted-Side Steel Plates

2013

Advances in Structural Engineering

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Existing reinforced concrete (RC) beams can be effectively strengthened by attaching steel plates to the side faces of the beams using anchor bolts. The performance of this type of beam, bolted side-plated (BSP) beams, is mainly controlled by the degree of partial interaction at the steel-concrete interface. In this study, a total of seven moderately reinforced BSP beams with different steel plate depths and various bolt spacings were tested. Their behaviours were compared to the available test results for lightly reinforced BSP beams obtained by other researchers. The results show that moderately reinforced RC beams are more effective in increasing the flexural strength and ductility capacity using deeper steel plates than the use of a greater number of anchor bolts. It was also found that the longitudinal and transverse slips were controlled by both the stiffness ratios of the steel plates to the RC beam and the force-slip response of the anchor bolts.

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Experimental Study of Moderately Reinforced Concrete Beams Strengthened with Bolted-Side Steel Plates

2013

Advances in Structural Engineering

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“…2. Mild steel plates of two different plate sizes, 6 × 150 mm deep and 6 × 75 mm deep, on both side faces of the specimens were chosen to be the 'Strong' and 'Weak' plate arrangements, respectively, equivalent to 2.3% and 1.1% of the Plate size a (mm × mm) 6 × 150 dp. 6 × 150 dp.…”

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confidence: 99%

“…In this study, the partial interaction at the peak moment section is quantified by two factors, the strain factor and the curvature factor [6,7] of the critical section (section with the largest moment), as illustrated in Fig. 11.…”

Section: Partial Interaction Responsementioning

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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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Study of Moderately Reinforced Concrete Beams Strengthened by Bolted-Side Steel Plates

2013

Design, Fabrication and Economy of Metal Structures

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Analysis of side-plated reinforced concrete beams with partial interaction

Cited by 11 publications

References 14 publications

Experimental Study of Moderately Reinforced Concrete Beams Strengthened with Bolted-Side Steel Plates

Experimental Study of Moderately Reinforced Concrete Beams Strengthened with Bolted-Side Steel Plates

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

Study of Moderately Reinforced Concrete Beams Strengthened by Bolted-Side Steel Plates

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