Bond behaviour of steel plate reinforced concrete beams

Sarhan, Mazin Mohammed; Hadi, Muhammad N.S.; Teh, Lip H.

doi:10.1016/j.conbuildmat.2018.09.024

Cited by 11 publications

(4 citation statements)

References 22 publications

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“…Then, the experimental study on reinforcement of damaged concrete beams with bonded steel plates was carried out under unloading and non-unloading conditions, respectively, and the bearing capacity was compared and analyzed. Although many scholars have done many works (Luo et al, 2020;Thamrin and Sari, 2017;Sarhan et al, 2018) in strengthening concrete beams with steel plates and gained rich research results, the contribution of pavement layer to bearing capacity has not been reported, which results in underestimation of the bearing capacity of the beam in-service. Therefore, this paper carried out experimental research on three hollow slab beams being used for 30 years with/without pavement layer.…”

Section: Introductionmentioning

confidence: 99%

Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates

Long

Wang

Xiao

2021

MMMS

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PurposeReinforcement of reinforced concrete (RC) beams in-service have always been an important research field, anchoring steel plate in the bottom of the beams is a kind of common reinforcement methods. In actual engineering, the contribution of pavement layer to the bearing capacity of RC beams is often ignored, which underestimates the bearing capacity and stiffness of RC beams to a certain extent. The purpose of this paper is to study the effect of pavement layer on the RC beams before and after reinforcement.Design/methodology/approachFirst, static load experiments are carried out on three in-service RC hollow slab beams, meanwhile, nonlinear finite element models are built to study the bearing capacity of them. The nonlinear material and shear slip effect of studs are considered in the models. Second, the finite element models are verified, and the numerical simulation results are in good agreement with the experimental results. Last, the finite element models are adopted to carry out the research on the influence of different steel plate thicknesses on the flexural bearing capacity and ductility.FindingsThe experimental results showed that pavement layers increase the flexural capacity of hollow slab beams by 16.7%, and contribute to increasing stiffness. Ductility ratio of SPRCB3 and PRCB2 was 30% and 24% lower than that of RCB1, respectively. The results showed that when the steel plate thickness was 1 mm–6 mm, the bearing capacity of the hollow slab beam increased gradually from 2158.0 kN.m to 2656.6 kN.m. As the steel plate thickness continuously increased to 8 mm, the ultimate bearing capacity increased to 2681.0 kN.m. The increased thickness did not cause difference to the bearing capacity, because of concrete crushing at the upper edge.Originality/valueIn this paper, based on the experimental study, the bearing capacity of hollow beam strengthened by steel plate with different thickness is extrapolated by finite element simulation, and its influence on ductility is discussed. This method not only guarantees the accuracy of the bearing capacity evaluation, but also does not require a large number of samples, and has certain economy. The research results provide a basis for the reinforcement design of similar bridges.

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Section: Introductionmentioning

confidence: 99%

Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates

Long

Wang

Xiao

2021

MMMS

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“…Before the appearance of cracks, the chemical cementation force caused by the production of hydrated calcium silicate formed by the cement hydration reaction between the steel bar and the concrete is immersed in the surface of the steel bar. When the load of the beam reaches the cracking load, cracks will occur, and the concrete pulled between the joints will cause stress to act on the steel bars, resulting in a redistribution of the internal stress of the reinforced concrete [2][3]. The end bond of a steel bar mainly includes the end anchoring of the independent column, the anchoring of the beam end, the anchoring of the end of the cantilever beam, etc., and its function is to ensure synergy between the steel bar and the concrete.…”

Section: Introductionmentioning

confidence: 99%

“…The anchor beam test is a four-point bend with a specific anchor length and two curved cracks [20]. The splicing beam test uses a concrete beam with a known reinforced bond length and a known splicing length (the splicing length exists in the constant moment region) [2]. The whole beam test is to cast a complete beam according to the requirements of the specification, in which the length of the steel bar at the bottom is slightly longer than the beam [19].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Bond Properties Between ALWSCC and Steel Bars Based on Different Test Methods

Yang

Zhi

Tang

et al. 2021

Advances in Transdisciplinary Engineering

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Reasonable evaluation of the bond performance between steel bars and concrete has important theoretical and practical value for reinforced concrete structural design and seismic analysis. The stress (τ) – strain (ε) formula is corrected based on a pull-out test, and the load (F) – deflection (w) curves are analyzed according to the change of stiffness before and after crack appearance based on a beam test, and new estimation formulas are given. At the same time, the bond properties are compared between all-lightweight shale ceramsite concrete (ALWSCC) and normal weight concrete (NWC). The results show that the bond property of ALWSCC is better than NWC. The bond stresses of pull-out specimens and beam specimens are the same or similar under equal conditions, but the ultimate load (F0) of the former is about 3.66 times that of the latter, the peak slip (S0) of the latter is 4.80 times that of the former, and the latter has significant splitting or pull-out failure characteristics. The peak slip (S0) in this paper is larger than that in the related literature, where the pull-out specimens are no more than 10 mm, and are generally less than 2 mm, while the beam specimens are not more than 3 mm, with the others generally around 1 mm. The research results have reference values and guiding significance for similar experimental research and engineering practice.

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“…Many studies have been conducted to examine the effect of reinforcement bar properties on the structural behavior of reinforced concrete members. To ensure the joint between reinforcement and concrete functions, however, many researchers have studied the behavior of the bond between different types of concrete and reinforcement [2]. Much of the research concluded that the bond between reinforcement and concrete can be defined as uniform shear stress over the surface of the bar, a simple and entirely inaccurate concept [3,4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation of Bond Behavior of Ribbed Steel Bars or Seven-wire Strands Embedded in Lightweight Concrete

Abed

Alkurdi

Kheshfeh

et al. 2020

Period. Polytech. Civil Eng.

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The bond-slip relationship between concrete and steel is significant in evaluating the nonlinear behavior of reinforced concrete structures. The force transmitted by the bond in reinforced concrete structures was studied numerically in high-strength, lightweight concrete with ribbed reinforcing steel bar or seven-wire strand, using ATENA 3D software. The first part of the study was a validation of the model based on the actual results of standardized pull-out tests using the software. Subsequently, the bond behavior was studied, where a four-point static bending test was modeled based on the real bond-slip relationship of the pull-out test. It was deduced that the ATENA 3D software can simulate the experimental tests and provide meaningful results. In addition, inferred from the numerical modeling, the maximum crack width and the mid-span deflection of the reinforced concrete beam increased when the bond stress between the concrete and the reinforcing steel bars was decreased. When a high amount of reinforcement (two strands) was used, concrete failure occurred before the strands yielded. However, further increase of the bond stress also decreased the maximum crack width and mid-span deflection. The failure occurred due to the increase in the strand yielding point by using one strand as a reinforcement of the beam.

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Bond behaviour of steel plate reinforced concrete beams

Cited by 11 publications

References 22 publications

Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates

Comparison of flexural capacity of different hollow slab beams with/without pavement layer reinforced by steel plates

Comparison of Bond Properties Between ALWSCC and Steel Bars Based on Different Test Methods

Numerical Evaluation of Bond Behavior of Ribbed Steel Bars or Seven-wire Strands Embedded in Lightweight Concrete

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