[en] Slim-floor or shallow floor construction is characterized by the integration of a steel beam into a slab. The activation of a composite action between the steel section and the concrete slab leads to a significant increase of the bending capacity and the stiffness of the beam, allowing for larger beam spans. This
paper presents a fundamentally new method for assessing the load-bearing capacity of CoSFB-Dowels, which ensures a composite action of a composite slim-floor beam (CoSFB). Based on detailed analysis of push-out tests, extensive numerical simulations were performed in order to identify the contribution of
various parameters on the load-bearing capacity. Finally, an analytical formulation of the load-bearing capacity is presented, which has been derived by applying a simple second order plasticity approach.
Disciplines :
Ingénierie civile
Auteur, co-auteur :
Braun, Matthias; Spannverbund S.A.
Obiala, Renata; AreclorMittal
SCHÄFER, Markus ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Kuhlmann, Ulrike; University of Stuttgart > Professor
Reif, Ferdinand; Spannverbund S.A.
ODENBREIT, Christoph ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Braun, M. (2018) Investigation of the Load-Bearing Behaviour of CoSFB-Dowels [PhD-Thesis]. Universität Luxemburg. http://orbilu.uni.lu/handle/10993/36873
Braun, M.; Hechler, O.; Obiala, R.; Kuhlmann, U. (2015) Innovatives Verbundmittel für integrierte Deckenträger, CoSFB-Betondübel. Ingenieurpreis des Deutschen Stahlbaus, Auszeichnung in der Kategorie Hochbau. Bauforumstahl (bfs).
Kuhlmann, U. et al. (2012) Push-out tests for the determination of the longitudinal shear capacity of Composite Slim-Floor beams. Research Report, Universität Stuttgart.
Friberg, B. F. (1938) Design of Dowels in Transverse Joints of Concrete Pavements. In: Amercian Society of Civil Engineers (ASCE), pp. 1809–1828.
Rasmussen, B. H. (1963) Betonindstobte, Tvaerbelastede Boltes og Dornes Baereevne (in Danish). In: Bygningsstatiske Meddelelser, S. 39–56.
SØrensen, J. H. et al. (2017) Testing and modeling dowel and catenary action in rebars crossing shear joints in RC. In: Engineering Structures 145, pp. 234–245.
Johansen, K. W. (1949) Theory of Timber Connections. In: Proceedings of IABSE Conference, Bern. pp. 249–262.
Broms, B. B. (1964) Lateral resistance of piles in cohesive soils. In: Journal of the Soil Mechanics and Foundation Division, American Society of Civil Engineers, pp. 27–63.
Andrä, H.-P. (1985) Neuartige Verbundmittel für den Anschluss von Ortbetonplatten an Stahlträger. In: Beton- und Stahlbetonbau 80, H. 12, S. 325–328.
Leonhardt, F.; Andrä, W.; Andrä, H.-P.; Harre, W. (1987) Neues, vorteilhaftes Verbundmittel für Stahlverbund-Tragwerke mit hoher Dauerfestigkeit. In: Beton- und Stahlbetonbau 82, H. 12, S. 325–331.
Zheng, S.; Liu, Y.; Yoda, T.; Lin, W. (2016) Parametric study on shear capacity of circular-hole and long-hole perfobond shear connector. In: Journal of Constructional Research 117, pp. 64–80.
Braun, M.; Obiala, R.; Odenbreit, Chr.; Hechler, O. (2014) CoSFB – Design and application of a new generation of slim-floor construction. In: Proceedings of the 7th European Conference on Steel and Composite Structures. EUROSTEEL 2014, Naples, Italy.
Ilseder Hütte (1922) Handbuch für P-Träger. Peine.
Leskelä, M. V. (2008) Shear Connection by Transverse Rebars – Shallow Floor Composite Beams. In: Proceedings Volume A, S. 273–278. EUROSTEEL 2008, Graz, Austria.
Kuhlmann, U. et al. (2010) Push-out and girder tests for the determination of the bending capacity and longitudinal shear capacity of Composite Slim-Floor girder with COFRADAL200® deck elements. Research Report, Universität Stuttgart.
Hechler, O.; Kuhlmann, U.; Eggert, F.; Hauf, G.; Braun, M.; Obiala, R. (2013) CoSFB – Composite slim-floor beam – Experimental test campaign and evaluation. In: Proceedings of Conference on Composite Construction in Steel and Concrete VII, Australia.
Braun, M.; Hechler, O.; Obiala, R. (2014) Untersuchungen zur Verbundwirkung von Betondübeln – Anwendung von tiefliegenden Betondübeln bei Slim-Floor Konstruktionen (CoSFB). In: Stahlbau 83, H. 5, S. 302–308.
Braun, M.; Hechler, O.; Obiala, R.; Kuhlmann, U.; Eggert, F.; Hauf, G.; Konrad, M. (2014) Experimentelle Untersuchungen von Slim-Floor Trägern in Verbundbauweise – Anwendung von tiefliegenden Betondübeln bei Slim-Floor Konstruktionen (CoSFB). In: Stahlbau 83, H. 10, S. 741–749.
EN 1994-1-1, Eurocode 4 (2004) Design of composite steel and concrete structures – Part 1-1: General rules and rules for buildings. Berlin: Beuth.
Arasaratnam, P.; Sivakumaran, K. S.; Tait, M. J. (2011) True stess-strain models for structural steel elements. In: International Scholarity Research Network ISRN Civil Engineering. Article ID 656401. 2011
Wurzer, O. (1998) Zur Tragfähigkeit von Betondübeln [PhD-Thesis]. Bundeswehruniversität München.
Richart, F. E.; Brandtzaeg, A.; Brown, R. L. (1928) A study of the failure of concrete under combined compressive stresses. Bulletin No. 185, Nov. 1928, University of Illinois, USA.
Mander, J. B.; Priestley, M. J. N.; Park, R. (1988) Theoretical stress-strain model for confined concrete. In: American Society of Civil Engineer (ASCE). Journal of Structural Engineering 114, no. 8, pp. 1804–1825.
Braun, M.; Obiala, R.; Odenbreit, Chr. (2015) Analyses of the loadbearing behaviour of deep-embedded concrete dowels, CoSFB. In: Steel Construction 8, no. 3, pp. 167–173.
Braun, M.; Obiala, R.; Odenbreit, Chr. (2017) Numerical simulation of the load bearing behaviour of concrete dowels in slim-floor construction – CoSFB. In: Proceedings of the 8th European Conference on Steel and Composite Structures. EUROSTEEL 2017, Copenhagen, Denmark.
Pavlovic, M. (2013) Resistance of bolted shear connectors in prefabricated composite decks [PhD-Thesis]. University of Belgrade, Serbia.
EN 1990, Eurocode 0 (2004) Basis of structural design. Berlin: Beuth.
Lieberum, K.-H.; Reinhardt, H.-W.; Weigler, H. (1989) Das Tragverhalten von Beton bei extremer Teilflächenbelastung. In: Beton- und Stahlbetonbau 84, H. 1, S. 1–5.
