Experimental investigation of reinforced SCC beam-column joint with rectangular spiral reinforcement under cyclic loading

Saha, Prasenjit; Prasad, M. L. V.

doi:10.1016/j.conbuildmat.2018.12.192

Cited by 22 publications

(10 citation statements)

References 25 publications

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“…Karayannis & Sirkelis and Azimi et al [29][30][31][32] experimentally investigated the cyclic behavior of RC beam-column connections and their results indicate the superiority of RCTR in terms of strength, ductility, and energy absorption capacity compared to conventional transverse reinforcement. Saha and Meesaraganda 33 reported similar outperformance for reinforced self-compacting concrete beam-column joints with RCTR. The effects of RCTR in shear walls were experimentally studied by Ref.…”

Section: Introductionmentioning

confidence: 78%

Compressive behavior of RC members with rectangular continuous transverse reinforcement

Zakerinejad

Soltani

2021

Structural Concrete

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Rectangular Continuous Transverse Reinforcement (RCTR), as a replacement for conventional ties, is a relatively new form of reinforcement that can accelerate and facilitate the construction of reinforcement for RC members. In this study, the compressive behavior of concrete members with this kind of reinforcement is experimentally and theoretically investigated. Twenty-eight RC short column specimens with multiple arrangements for bar size and spacing of transverse reinforcement; including RCTR and conventional ties are examined under monotonic and half-cyclic loadings. The results imply that RCTR is a valid substitute for traditional ties and to a certain extent can improve the compressive strength of RC members. Based on Elasto-Plastic and Fracture (EPF) concrete model, a theoretical method is proposed in order to predict the behavior of such members, which conforms well with the experimental results.Furthermore, the validity of existing design provisions in the compressive design of these members is investigated.confinement, elasto-plastic and fracture model, rectangular continuous transverse reinforcement, reinforced concrete member

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Section: Introductionmentioning

confidence: 78%

Compressive behavior of RC members with rectangular continuous transverse reinforcement

Zakerinejad

Soltani

2021

Structural Concrete

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“…High strength reinforcements, various detailing and configurations were the subject of multiple studies in the last decades. under lateral cyclic loading was investigated (Saha and Meesaraganda, 2019). A total of twelve 1/3 rd scale exterior beam-column connection specimens with variable flexural strength ratios of 1.3, 1.5 and 2.0 as well as three different inclinations of stirrups angle of 75°, 80° and 85° were tested with continuous rectangular spiral reinforcement and compared to an individual closed stirrups specimen as the control specimen.…”

Section: Research On Beam-column Jointsmentioning

confidence: 99%

Behaviour of Structural Elements Constructed and Rehabilitated With High Performance Concretes

Ehsani Yeganeh

2024

Preprint

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<p>An extensive experimental investigation coupled with Code based/design-oriented analysis was conducted on the performance and application of high-performance concretes (HPCs) including self-consolidating concrete (SCC), engineered cementitious composite (ECC) and ultra-highperformance concrete (UHPC) in different reinforced structural elements. Ten 1/3 scale exterior shear deficient beam-column connections were tested under torsional and bending loading. Ten rd 1/3 scale building frames (three shear and seven flexure critical) and seven framed shear walls were tested under reversed cyclic lateral loading. Twenty-three 1/5 scale ECC/UHPC/SCC jacketed strengthened/repaired reinforced SCC piers/columns were tested under axial loading to failure. The incorporation of ECC and UHPC in full frame or joint region (in plastic hinge zone) as replacement of SCC in shear deficient specimens changed brittle shear failure to desired ductile flexural failure mode while significantly increasing bending/torsional/cyclic or hysteretic load and deformability/ductility capacities. ECC/UHPC made specimens exhibited higher energy absorption and damage tolerance capacities with better crack control characteristics as well as potentially lower longitudinal and hoop/shear reinforcement requirements which can significantly improve seismic behaviour. The strain hardening with multiple cracking and limiting crack width characteristics of ECC lowered the initial stiffness and stiffness degradation with the ability to maintain good damping behaviour during lateral cyclic loading of building frames and framed shear wall system. The tested ECC framed shear wall specimens under lateral cyclic loading had higher ultimate load and deformability capacities compared to their SCC counterparts. This was attributed to better transfer of shear stress through cracks due to fiber bridging and multiple cracking with small crack width in ECC compared to SCC/UHPC. Piers rehabilitated and strengthened with ECC/UHPC jackets showed higher strength. However, ECC specimens showed better performance in terms of enhanced confining effect along the height exhibiting ductile failure compared to their SCC/UHPC counterparts which showed brittle crushing failure at the top with jacket spalling. Existing Codes and other analytical equations need to be modified for the design of ECC/UHPC incorporated structural components. This study revealed great potential of ECC/UHPC repair/strengthening technology and ECC/UHPC incorporated building frames, beam-column connections and framed-shear wall system having higher torsional, flexural and shear resistance in practical construction.</p>

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“…Research on the reinforcement of the frame system, Increase the shear strength of the beam and compressive reinforcement, tensile reinforcement requires shear reinforcement with several variations of geometric models, namely vertical, conventional system, truss system and spiral, for more details, as shown in Figure 3 [16][17][18]. Several research studies have shown that they can increase the flexural capacity of the beam [19,20]. Conventional shear reinforcement, which functions to withstand bending moment loads, is converted into spiral reinforcement installed continuously on the axis of the concrete block and acts as reinforcement to withstand shear forces.…”

Section: Figure 1 Compression-tension Of a Flexural Beam Figure 2 Rec...mentioning

confidence: 99%

Performance Flexural of RC Beams Without Concrete at Tension Cross-section

Amir

Rahman²,

Opirina³

et al. 2022

Civ Eng J

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This study aims to analyze the flexural capacity of RC without concrete in a tension cross-section using an experimental method. The number of specimens is three pieces, namely a spiral reinforced concrete beam (SBC) and a vertical reinforced concrete beam (CBN); both of these blocks are without concrete in the cross-section of the reinforcement and 60D tensile steel reinforcement in the support area, where D is the primary diameter, and a conventional concrete beam as the control beam (CB). The beam size is 3100×150×200 mm. The beams are supported by simple supports with a span of 3000 mm. The concrete in the structural beam elements, which work optimally to withstand the load, is the outermost fibre part of the side, while the concrete on the tension side does not have a direct role in determining the magnitude of the resisting moment. Therefore, the quality of the concrete in the concrete beam section must be optimized, while the concrete in the tension section must be minimized. Eliminating concrete in tension areas reduces the construction's self-weight and use of concrete-making materials. The main variables in this research are bending behaviour and crack pattern. The beam specimens were tested with two-point loading monotonically. By observing the crack pattern and failure mode, the results showed an increase in the capacity load of SBC by 21.58% CBN but a decrease of 27.57% compared to the CB control beam. Flexural cracks and beam failures resembled under-reinforcing. The flexural capacity was analyzed based on static analysis and then validated by calculating the ratio between the theoretical nominal moment and the experimental moment. This finding shows that changing the conventional shear reinforcement model to spiral can increase the flexural of the beam without concrete in the tension cross-section. Doi: 10.28991/CEJ-2022-08-11-014 Full Text: PDF

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Experimental investigation of reinforced SCC beam-column joint with rectangular spiral reinforcement under cyclic loading

Cited by 22 publications

References 25 publications

Compressive behavior of RC members with rectangular continuous transverse reinforcement

Compressive behavior of RC members with rectangular continuous transverse reinforcement

Behaviour of Structural Elements Constructed and Rehabilitated With High Performance Concretes

Performance Flexural of RC Beams Without Concrete at Tension Cross-section

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