Longitudinal Partial Interaction in Bolted Side-Plated Reinforced Concrete Beams

Su, R.K.L.; Li, L.Z.; Lo, S.H.

doi:10.1260/1369-4332.17.7.921

Cited by 18 publications

(6 citation statements)

References 14 publications

(17 reference statements)

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“…Ignoring the effects of this partial interaction in theoretical computations can lead to an overestimation of the flexural performance enhancement achieved by BSP. This overestimation can be as much as 30%, as reported by Siu and Su [10]. Li et al [11] proposed a simplified "two factor and three steps" design method for flexural strengthening.…”

Section: Introductionmentioning

confidence: 83%

“…It is also known to have high stiffness. In general, the plates are bonded/glued to the beams and attached at the compression and tension zones of the RC beams to provide a locking mechanism that will increase the load-bearing capacity and ductility of the section in order to avoid brittle failure [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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An Experimental and Numerical Study on the Flexural Performance of Over-Reinforced Concrete Beam Strengthening with Bolted-Compression Steel Plates: Part II

et al. 2019

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This study presents an experimental investigation and finite element modelling (FEM) of the behavior of over-reinforced simply-supported beams developed under compression with a bolt-compression steel plate (BCSP) system. This study aims to avoid brittle failure in the compression zone by improving the strength, strain, and energy absorption (EA) of the over-reinforced beam. The experimental program consists of a control beam (CB) and three BCSP beams. With a fixed steel plate length of 1100 mm, the thicknesses of the steel plates vary at the top section. The adopted plate thicknesses were 6 mm, 10 mm, and 15 mm, denoted as BCSP-6, BCSP-10, and BCSP-15, respectively. The bolt arrangement was used to implement the bonding behavior between the concrete and the steel plate when casting. These plates were tested under flexural-static loading (four-point bending). The load-deflection and EA of the beams were determined experimentally. It was observed that the load capacity of the BCSP beams was improved by an increase in plate thickness. The increase in load capacity ranged from 73.7% to 149% of the load capacity of the control beam. The EA was improved up to about 247.5% in comparison with the control beam. There was also an improvement in the crack patterns and failure modes. It was concluded that the developed system has a great effect on the parameters studied. Moreover, the prediction of the concrete failure characteristics by the FE models, using the ABAQUS software package, was comparable with the values determined via the experimental procedures. Hence, the FE models were proven to accurately predict the concrete failure characteristics.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

An Experimental and Numerical Study on the Flexural Performance of Over-Reinforced Concrete Beam Strengthening with Bolted-Compression Steel Plates: Part II

et al. 2019

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“…Previous researches [27][28][29][30] demonstrated that partial interaction was caused by the slippage between the steel jacket and substrate through the bolt connection, which led to a better strengthening effect. To achieve better collaboration between the masonry substrate and RPC coating, twenty-two 6 mm diameter U-shaped steel bars at a spacing of 250 mm were precast in the mortar joints as shown in Figure 1.…”

Section: Description Of Specimensmentioning

confidence: 99%

Experimental Study on Seismic Strengthening of Confined Masonry Walls Using RPC

Wang

et al. 2019

Advances in Materials Science and Engineering

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Masonry structures without effective reinforcement are vulnerable to seismic excitation. An innovative strengthening technique was proposed for damaged and undamaged masonry walls. Six confined masonry units with two aspect ratios were tested under in-plane lateral cyclic loading, which consisted of two control walls, two original walls strengthened with reactive powder concrete (RPC-1), and two damaged walls repaired with RPC (RPC-2). The results of the specimens retrofitted with RPC demonstrated that the proposed technique significantly enhanced the seismic performance of masonry walls in terms of lateral strength, ductility, and energy dissipation. Furthermore, the two repaired specimens had a better distributed cracking pattern than the two strengthened specimens. The analysis of the results leads to a better understanding of the effect and mechanism of RPC seismic retrofitting for confined masonry walls.

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“…Lai et al [8,9] proposed several innovative methods, such as steel rings, tie bars, spirals, and jackets, to strengthen the original and existing concrete-filled-steel-tube columns, which are highly effective since the confining stress of the core concrete can be increased. Su and Li [10][11][12] bolted steel plates to the side faces of RC beams, thus both the flexural and shear load capacity can be significantly enhanced without an obvious reduction of ductility.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of RC Structures by Using Engineered Cementitious Composites: A Review

Shang

et al. 2019

Sustainability

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This paper presents a review of the recent work assessing the performance of building structures strengthened with engineered cementitious composite (ECC). ECC characterizes tensile strain hardening and multiple cracking properties, as well as strong interfacial bonding performance with substrate concrete, which makes it a promising retrofitting material. A lot of researches have been conducted on reinforced concrete (RC) structures, including beams, columns, beam–column joints, and fire-damaged slabs, strengthened with ECC material, and an extensive collection of valuable conclusions were obtained. These strengthening systems usually combine ECC with FRP textiles or steel bars to form a composite strengthening layer. The review demonstrates that ECC strengthening can greatly improve the performance of RC structures.

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Longitudinal Partial Interaction in Bolted Side-Plated Reinforced Concrete Beams

Cited by 18 publications

References 14 publications

An Experimental and Numerical Study on the Flexural Performance of Over-Reinforced Concrete Beam Strengthening with Bolted-Compression Steel Plates: Part II

An Experimental and Numerical Study on the Flexural Performance of Over-Reinforced Concrete Beam Strengthening with Bolted-Compression Steel Plates: Part II

Experimental Study on Seismic Strengthening of Confined Masonry Walls Using RPC

Strengthening of RC Structures by Using Engineered Cementitious Composites: A Review

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