Perforated Shear Connector for Composite Steel and Concrete Beams

This paper presents the results of an experimental program developed to investigate the behavior of an innovative technology for connections by adhesion, interlocking and friction in composite structures. Connections have a strategic importance for precast concrete and steel-concrete composite structures, since they determine the global structural behavior and affect the whole production process, from execution to assemblage and other services on site. Currently, however, steel-concrete composite connections are not completely adapted for their use in prefabricated slabs. In this way, the development of new types of connections is clearly necessary, where connections by adherence (or connections by adhesion, interlocking and friction) seem quite promising. To improve the knowledge in the field of connections by adherence, this paper proposes a new geometry of embossments in the steel and in the concrete surfaces associated with the use of a high performance mortar. Monotonic push-out tests are performed, and their results are presented and discussed. A satisfactory behavior of the proposed connection in terms of strength is observed, justifying further studies on the subject.

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“…Studnicka et al [6], Baran and Topkaya [7], Kim et al [8], Schmitt et al [9], and Vellasco et al [10].…”

Section: Brief Reviewmentioning

confidence: 99%

Experimental analysis of new interfaces for connections by adhesion, interlocking and friction

Diógenes

Debs

Valente

2015

Journal of Constructional Steel Research

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“…An investigation was carried out by Oguejiofor and Hosain [6] on modeling the push-out test using finite element predicting a numerical model for resisting capacity calculation of connector resistance [6] . The push test results were presented for connector resistance of concrete deck plates with precast concrete slab used as a shuttering [7] . Experimental tests were carried out with lightweight concrete describing connection behavior, measuring slip between steel profile and concrete slab, defining connection ductility and considering concrete strength, reinforcement disposition and rib existence [8] .…”

Section: Perfobond Connectors' Historical Reviewmentioning

confidence: 99%

Finite Element Simulation and Parametric Studies of Perfobond Rib Connector

Al-Darzi¹,

Chen²,

Liu³

2007

American J. of Applied Sciences

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Simulating the push-out test and conducting parametric study using finite element model are conducted using perfobond connectors. The finite element model was verified through comparing with push-out test results. The verified finite element model was then used to conduct parametric study aiming to investigate the effect of several parameters, such as height and thickness of connector, cross sectional area and yield strength of transverse reinforcement, concrete compressive strength and rib holes, on resistance capacity. The results of the parametric study are treated statistically to produce a mathematical model suggested to estimate the resistance capacity of the perfobond connector.

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“…Both newly developed connectors (Ribcon and Stripcon) are certified for use in Czech Republic in accordance with ENV 1994-1-1 (Eurocode 4) based on research [3,4] resulting in design strength of the connectors. As for Stripcon (made of steel with yield point f y = 300 to 400 MPa) the following characteristic shear strength and partial safety factor were derived:…”

Section: Introductionmentioning

confidence: 99%

Experimental Behaviour of Composite Girders With Steel Undulating Web and Thin‐walled Shear Connectors Hilti Stripcon

Motak

Macháček

2004

Journal of Civil Engineering and Management

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Two tests of real‐size composite steel and concrete girders are described. The girders had spans 7,5 m, thin‐walled undulating webs (WT girders) and concrete deck 120/1500 mm concreted into profile steel sheeting TR 60/235/0,75. Thin‐walled shear connectors Hilti Stripcon were used and fastened via powder actuated fasteners. Setup of the tests, relevant instrumentation and measuring procedure are presented. The girder tests supplemented large series of push tests of connectors Stripcon performed at CTU in Prague. One of the composite girders was designed with full‐shear connection while the second one with extremely low partial shear connection (44 %). Simple preliminary linear calculations proved that experimental strength capacities of the girders are in good agreement with the calculated values, however, the deflection are due to flexibility of the connectors higher. Buckling shear capacity of the undulating webs in both tests was higher than shear at collapse of the girders. Another test dealing with interaction of web buckling in shear and Stripcon shear connection is under progress. Comparison of theoretical and experimental results is performed and recommendations for practical design are presented.

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Perforated Shear Connector for Composite Steel and Concrete Beams

Cited by 11 publications

References 2 publications

Experimental analysis of new interfaces for connections by adhesion, interlocking and friction

Experimental analysis of new interfaces for connections by adhesion, interlocking and friction

Finite Element Simulation and Parametric Studies of Perfobond Rib Connector

Experimental Behaviour of Composite Girders With Steel Undulating Web and Thin‐walled Shear Connectors Hilti Stripcon

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