Flexural behavior of shallow cellular composite floor beams with innovative shear connections

Chen, Shiming; Limazie, Toi; Tan, Jianyao

doi:10.1016/j.jcsr.2014.12.021

Cited by 35 publications

(38 citation statements)

References 8 publications

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“…19. concrete, as it is well shown in flexural tests [10] and the push-out test [9]. These concrete pulverizations further increase the slips between the concrete and steel beam.…”

Section: Influence Of the Reinforcing Tie-bar Elementmentioning

confidence: 58%

“…The finite element analysis study presented herein is based on the push-out test presented by Huo and D'Mello [9] and the bending test presented by Chen et al [10].…”

Section: Geometric Modelingmentioning

confidence: 99%

“…of circular opening with 4200 mm 2 area of the infill concrete element, and having8,10,12,14, 16 and 20mm diameters tie-bar respectively, the increase in the load capacity is 1.2, 1.36, 1.6, 1.72, 1.82 and 1.93 times of the load capacity of the reference shear connection without tie-bar element. The increase in the longitudinal load capacity of the clothoidal shape shear connection with 17000 mm 2 of infill concrete having 8, 12, and 16mm tie-bar is 1.11, 1.4 and 1.65, respectively.The presence of the tie-bar within the shear connection will also influence the failure mechanism of the shear connection.…”

mentioning

confidence: 95%

“…Two configurations of the shear connection are designed representing different web opening geometries: the "circular opening" and the "clothoidal opening". A series of push-out tests on the circular opening shear connection configuration were performed by Huo and D'Mello [9], while the circular and clothoidal openings shear connections configurations were also investigated through a series of flexural bending tests by Chen et al [10]. Based on these previous investigations, an explicit finite element analysis was conducted to study the distinct behavior of the shear connection, and four different web opening configurations were designed and investigated by simulating the push-out test.…”

mentioning

confidence: 99%

“…The brittle failure of the shear connection is no more observed for the shear connection combining tie-bar and infill concrete. The effect of the tie-bars on the structural behavior and shear strength of the shear connections were experimentally and numerically investigated and presented by Chen et al[10] and Toi and Chen[14].…”

mentioning

confidence: 99%

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Effective shear connection for shallow cellular composite floor beams

Limazie

Chen

2017

Journal of Constructional Steel Research

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Shallow cellular Composite Floor Beam is a new type of composite floor beam that usually consists of a structural steel beam with regularly spaced web openings and concrete slab casted above the steel decking. In this study, the shear transferring mechanisms of shallow cellular composite beams design with innovative shear connection systems are investigated. A detailed finite element analysis program was performed to investigate the force transferring mechanism, load bearing capacity and failure behavior of the shear connections under direct longitudinal shear forces by simulating the push-out tests. Four different configurations of shear connections (web opening configurations) were designed and an intensive parametric study was conducted to determine the material and geometric parameters that likely influence the behavior of the shear connection. Finally, the findings from this investigation are incorporated with the bending and push-out test results to develop design methods for this form of shear connection. The failure mechanisms of the shear connection were confirmed, and it was also revealed that this type of shear connection is effectively © 2014. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/ 2 capable to provide the desired shear resistance and ductile behavior if designed properly.

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“…19. concrete, as it is well shown in flexural tests [10] and the push-out test [9]. These concrete pulverizations further increase the slips between the concrete and steel beam.…”

Section: Influence Of the Reinforcing Tie-bar Elementmentioning

confidence: 58%

“…The finite element analysis study presented herein is based on the push-out test presented by Huo and D'Mello [9] and the bending test presented by Chen et al [10].…”

Section: Geometric Modelingmentioning

confidence: 99%

mentioning

confidence: 95%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Effective shear connection for shallow cellular composite floor beams

Limazie

Chen

2017

Journal of Constructional Steel Research

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Comparison of HST and WO Shear Connector Behaviour in Composite Slim Floor

Baharom¹,

Hosseinpour

Majdub

2021

ce papers

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Composite steel‐concrete slim floor construction is an economical floor system proposing minimum floor depth and fast construction besides architecture requirements. In this system, the concrete slab is supported on the lower flange of the steel beam using either in‐situ or pre‐cast technique, which eliminates the use of the down‐stand beam, hence giving a flat look. Hollow steel tube (HST) shear connector is proposed to avoid premature failure that could occur in concrete and steel beam web when the web openings (WO) connectors were used. In this paper, the comparison of push‐out test results between HST and WO to evaluate their ultimate shear load and ductility performance of these type of connectors. The varied parameters were the concrete compressive strength and shape of the HST and WO; the circular, rectangular and square. The results showed that the circular and square HST connectors achieved shear capacities 6.3 and 8.0 times higher than those with the WO type, respectively. Furthermore, the ductility of the specimens increased by 3‐4 times when the HST was used compared to WO. It shows that providing the HST significantly improved its ultimate shear load and ductility performance compared to WO.

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Shear resistance of concrete dowels in composite slim‐floor beams

Aggelopoulos¹,

Schorr

Kuhlmann

2021

ce papers

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Slim‐floor beams offer the significant advantage of shallow floor depths. When combined with deep profiled steel sheeting, for example, being able to route services in‐between the troughs provides flexibility. Despite their advantages, composite slim‐floor solutions are rarely used in buildings, partly due to the lack of codified rules and detailed design guidelines. One of the objectives of the recently completed, European research project SlimAPP, was to investigate the structural behaviour of slim‐floor composite beams through experimental and numerical studies. Furthermore, design guidance for both the construction and the normal stage was developed. Particular focus was given to the shear connection between the steel section and the concrete slab. As an innovation compared with the conventional use of headed studs, concrete dowel type connectors were considered, where reinforcing bars are passed through openings in the web of the steel section. The findings from push‐out tests and subsequent finite element analyses on concrete dowel connectors are presented. From these results the load resisting mechanisms have been identified. Furthermore, the effect of certain parameters such as the concrete strength, the diameter of the rebar and the size of the web opening on resistance and ductility are evaluated. Analytical models are developed to predict the shear resistance for this type of connectors considering the various load resisting mechanisms. The models are validated against numerical and experimental results from the SlimAPP project and previous research. Comparisons are also presented against results obtained from the back‐analysis of beam tests which were also performed in the SlimAPP project.

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Flexural behavior of shallow cellular composite floor beams with innovative shear connections

Cited by 35 publications

References 8 publications

Effective shear connection for shallow cellular composite floor beams

Effective shear connection for shallow cellular composite floor beams

Comparison of HST and WO Shear Connector Behaviour in Composite Slim Floor

Shear resistance of concrete dowels in composite slim‐floor beams

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