[en] The work presents a numerical study that focuses on steel-concrete composite beams using ductile headed stud shear connectors. The objective is to check the suitability of the proposed revised EN 1994-1-1 rules for the minimum degree of shear connection. Therefore, a non-linear 3D finite element model of simply supported composite beams was developed and validated against the analytical values of the plastic bending design resistance. The parametric study consists of 10 configurations where the relative slip at slab-beam interface was carefully investigated at different degrees of shear connection and propping conditions. Specifically, the slip at the minimum degree of shear connection shall not exceed the limit of 6 mm defined as the characteristic slip of ductile connector according to EN 1994-1-1. The results showed that the revised rules for unpropped beams delivers conservative results whereas one case with propped conditions exhibit a maximum slip significantly higher than 6 mm.
Disciplines :
Ingénierie civile
Auteur, co-auteur :
ODENBREIT, Christoph ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
VIGNERI, Valentino ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Engineering (DoE)
Co-auteurs externes :
no
Langue du document :
Anglais
Titre :
Numerical study on the revised rules for minimum degree of shear connection in propped and unpropped steel-concrete composite beams. (LAC21.A2)
Date de publication/diffusion :
16 juin 2021
Nom de la manifestation :
14th International Conference on Metal Structures - ICMS 2021
British Standards Institution, EN 1994-1-1: 2004 Eurocode 4 - Design of composite steel and concrete structures Part 1-1: General rules and rules for buildings, London, 2004.
Johnson, R.P., Molenstra, N., Partial shear connection in composite beams for buildings. Proc Inst Civ Eng 91:4 (1991), 679–704.
Classen, M., Stark, A., Hegger, J., Steel-HSC composite beams with partial shear connection and miniaturized limited-slip-capacity connectors. Steel Constr 11:1 (2018), 94–103.
Classen, M., Stiller, L.K., Anwendungsgrenzen für eine teilweise Verdübelung von Verbundträgern mit oberflanschlosen Stahlprofilen und Verbunddübelleisten: Teil 2: Analyse des Trag-und Verformungsverhaltens und Modelle für den Mindestverdübelungsgrad. Stahlbau 87:2 (2018), 128–135.
Classen, M., Herbrand, M., Mindestverdübelung von Verbundträgern mit kleinskaligen Verbundmitteln-Herleitung des Mindestverdübelungsgrades durch systematischen Einsatz nicht-linearer Finite-Elemente-Berechnungen. Bauingenieur 91:4 (2016), 140–151.
Pfenning, S., Brunkhorst, S., Mensinger, M., Zehfuss, J., Minimum degree of shear connection of composite beams in fire. Stahlbau 88:3 (2019), 234–246.
British Standards Institution, EN 1990: 2002 Eurocode - Basis of structural design, London, 2002.
Bärtschi, R., Fontana, M., Taras, A., Tobler, R., Zum Mindestverdübelungsgrad von Verbundträgern. Stahlbau 89:7 (2020), 599–606.
Classen, M., Limitations on the use of partial shear connection in composite beams with steel T-sections and uniformly spaced rib shear connectors. J Constr Steel Res 142 (2018), 99–112.
Lawson M, Aggelopoulos E, Obiala R, Hanus F, Odenbreit C, Nellinger S, Kuhlmann U, Eggert F, Lam D, Dai X, Sheehan T. Development of improved shear connection rules in composite beams - Final Report, 2017.
Ranzi, G., Zona, A., A steel–concrete composite beam model with partial interaction including the shear deformability of the steel component. Eng Struct 29 (2007), 3026–3041.
Luo, Y., Li, A., Kang, Z., Parametric study of bonded steel–concrete composite beams by using finite element analysis. Eng Struct 34 (2012), 40–51.
El-Lobody, E., Lam, D., Finite Element Analysis of steel-Concrete Composite Girders. Adv Struct Eng 6:4 (2003), 267–281.
Amadio, C., Bedon, C., Fasan, M., Pecce, M.R., Refined numerical modelling for the structural assessment of steel-concrete composite beam-to-column joints under seismic loads. Eng Struct 138 (2017), 394–409.
European Commission: Directorate-General for Research and Innovation, Reuse and demountability using steel structures and the circular economy (REDUCE), Brussels, 2020.
Aribert, J.M., Analyse et formulation pratique de l'influence de la nuance de l'acier du profile sur le degre minimum de connexion partielle d'une poutre mixte. Constr Métallique 3 (1997), 39–55.
British Standards Institution, EN 1992-1-1: 2004 Eurocode 2 - Design of concrete structures Part 1-1: General rules and rules for buildings, London, 2004.
Aggelopoulos E, Couchman G, Lawson M. Minimum degree of shear connection in composite beams in buildings. In: Proceedings of the 12th International Conference 12th international conference on Advances in Steel-Concrete Composite Structures, Valencia, 2018.
Lawson, M.R., Lam, D., Aggelopoulos, E.S., Nellinger, S., Serviceability performance of steel-concrete composite beams. Struct Build 170:2 (2016), 98–114.
Pearson, K., Notes on Regression and Inheritance in the Case of Two Parents. Proc Roy Soc London 58 (1895), 240–242, 10.1098/rspl.1895.0041.
Spearman, C., The proof and measurement of association between two things. Am J Psychol 15:1 (1904), 72–101.
