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Article Dans Une Revue Engineering Structures Année : 2024

Hybrid steel beam to exterior RC column joints with encased steel profile

Résumé

Hybrid reinforced concrete steel (RCS) frames consisting of reinforced concrete (RC) column and steel (S) are used frequently in practice for mid-to-high-rise buildings. RCS frames possess several advantages from structural, economical and construction view points compared to either traditional RC or steel frames. One of the key elements in RCS frames is the beam-to-column joint. This paper suggests a design method to evaluate the mechanical behaviour of a novel type of exterior RCS beam-column connection in which a steel profile totally encased into a RC column is used to connect the beam through the steelwork part of composite section. The proposed design model is developed considering experimental test results and finite element (FE) analyses. In the first part of the paper, an experimental investigation on the static behaviour of the hybrid joint is presented. Four full-scale specimens were tested under monotonic loading. The primary differences between the specimens are the concrete class and the anchorage length of the embedded steel profile in the RC column. The experimental results indicated that the overall behaviour of the specimens was significantly affected by the shear panel deformations of the embedded profile. Next, a finite element model was created. The FE model predictions compared favourably against experimental tests and confirmed the order of yielding/cracking of joint components. Finally a design method based on Eurocodes 2, 3 and 4 is proposed to determine the initial rotational stiffness and the bending resistance of the joint.
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Dates et versions

hal-04540996 , version 1 (10-04-2024)

Identifiants

Citer

V.-P. Nguyen, Q.-H. Nguyen, M. Couchaux, J.M. Aribert, M. Hjiaj. Hybrid steel beam to exterior RC column joints with encased steel profile. Engineering Structures, 2024, 306, pp.117624. ⟨10.1016/j.engstruct.2024.117624⟩. ⟨hal-04540996⟩
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