Experimental Analysis of the Structural Behavior of Timber-Concrete Composite Slabs made of Beech-Laminated Veneer Lumber
Publication: Journal of Performance of Constructed Facilities
Volume 28, Issue 6
Abstract
Composite, timber-concrete slabs as structural floor systems for office and residential buildings, offer several technical advantages over traditional, exclusively timber floors. The connection between timber and concrete in current systems made of spruce relies on mechanical steel fasteners to transfer shear forces between the two materials. The mechanical properties of beech-laminated veneer lumber (LVL), which are higher and more reliable than spruce, allow the development of an innovative timber-concrete composite slab made of a thin beech-laminated veneer lumber plate and a concrete layer. The connection between the two materials is accomplished with notches in the timber plate instead of mechanical steel fasteners. The structural performance of this system was evaluated with a series of bending tests. The results demonstrated that this type of timber-concrete composite system was able to reach high load-carrying capacity and that the structural behavior and failure modes of the composite elements were strongly influenced by the geometry of the notched connection.
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References
Ahmadi, B. H., and Saka, M. P. (1993). “Behavior of composite timber-concrete floors.” J. Struct. Eng., 3111–3130.
Aydin, I., Colak, S., Colakoglu, G., and Salih, E. (2004). “A comparative study on some physical and mechanical properties of laminated veneer lumber (LVL) produced from Beech (Fagus orientalis Lipsky) and Eukalyptus (eucalyptus camalduleius Dehn.) veneers.” Holz Roh Werkst, 62(3), 218–220.
Blass, H. J., and Schlager, M. (1997). “Connections for timber-concrete-composite structures.” Proc., Int. Conf. on Composite Construction—Convectional and Innovative, Innsbruck, Austria, 169–174.
Burdurlu, E., Kilic, M., Ilce, A. C., and Uzunkavak, O. (2007). “The effects of ply organisation and loading direction on bending strength and modulus of elasticity in laminated veneer lumber (LVL) obtained from beech and Lombardy poplar.” Constr. Build. Mater., 21(8), 1720–1725.
Ceccotti, A. (1995). “Timber-concrete composite structures.” STEP 2, timber engineering, Centrum Hout, Almere, Netherlands.
Dias, A. M. P. G., Lopes, S. M. R., Van de Kuilen, J. W. G., and Cruz, H. M. P. (2007). “Load-carrying capacity of timber-concrete joints with dowel-type fasteners.” J. Struct. Eng., 720–727.
Ehlbeck, J., and Colling, F. (1985). “Out-of-plane shear strength and shear modulus of beech-laminated veneer lumber.” Holz Roh Werkst, 43(4), 143–147 (in German).
European Committee for Standardisation (CEN). (2002). “Eurocode—basis of structural design.” EN 1990, Brussel, Belgium.
European Committee for Standardisation (CEN). (2004). “Eurocode 5—design of timber structures, part 1-1: General—common rules and rules for buildings.” EN 1995-1-1, Brussel, Belgium.
Fragiacomo, M. (2005). “A finite element model for long-term analysis of timber-concrete composite beams.” Struct. Eng. Mech., 20(2), 173–189.
Fragiacomo, M. (2006). “Long-term behavior of timber-concrete composite beams. II: Numerical analysis and simplified evaluation.” J. Struct. Eng., 23–33.
Frangi, A. (2001). “Brandverhalten von Holz-Beton-Verbunddecken.”, Institute of Structural Engineering, Zurich, Switzerland (in German).
Frangi, A., and Fontana, M. (2000). “Experimental tests on timber-concrete composite slabs at room temperature and under ISO-fire exposure.”, Institute of Structural Engineering, Zurich, Switzerland (in German).
Frangi, A., and Fontana, M. (2003). “Elasto-plastic model for timber-concrete composite beams with ductile connection.” Struct. Eng. Int., 13(1), 47–57.
Gehri, E. (1993). “Laminated veneer lumber.” Das Grafik Werk, Zurich, Switzerland (in German).
Gelfi, P., Giuriani, E., and Marini, A. (2002). “Stud shear connection design for composite concrete slab and wood beams.” J. Struct. Eng., 1544–1550.
Gutkowski, R. M., Brown, K., Shigidi, A., and Natterer, J. (2004). “Investigation of notched composite wood-concrete connections.” J. Struct. Eng., 1553–1561.
Kenel, A. (2000). “Calculation and dimensioning of timber concrete composite structural elements.”, Swiss Federal Laboratories for Materials Testing and Research (EMPA), Dübendorf, Switzerland (in German).
Kolb, H. (1968). “Bending and fire tests of beams made of beech-laminated veneer lumber.” Holz Roh Werkst, 26(8), 277–283 (in German).
Krackler, V., Keunecke, D., and Niemz, P (2010). “Converting and possible uses of hardwood and hardwood leftovers.” Institute of Building Materials, Zurich, Switzerland (in German).
Krackler, V., and Niemz, P. (2011). “Converting of hardwood: difficulties and chances.” Holztechnologie, 52(2), 5–11 (in German).
Kreuzinger, H. (1995). “Mechanically jointed beams and columns.” STEP 1, timber engineering, Centrum Hout, Netherlands.
Kuhlmann, U., and Schänzlin, J. (2008). “A timber-concrete composite slab system for use in tall buildings.” Struct. Eng. Int., 18(2), 174–178.
Michelfelder, B. (2006). “Load- and deformation behavior of grooves as shear-connectors in timber-concrete composite slabs.” Doctoral dissertation, Institut für Konstruktion und Entwurf, Stuttgard, Germany (in German).
Möhler, K. (1956). “On the load carrying behavior of beams and columns of compound sections with flexible connections.” Dissertation, Habilitation, Technical Univ. of Karlsruhe, Germany (in German).
Muttoni, A., and Schwartz, J. (1991). “Behaviour of beams and punching in slabs without shear reinforcement.” IABSE Rep., Vol. 62, 703–708.
Natterer, J., Hamm, J., and Favre, P. (1996). “Composite wood-concrete floors for multi-story buildings.” Proc., Int. Wood Engineering Conf., Omnipress, Madison, WI, 3431–3435.
Newmark, N. M., Siess, C. P., and Viest, I. M. (1951). “Tests and analysis of composite beams with incomplete interaction.” Proc., Soc. Exp. Stress Anal., 9, 75–92.
Salari, R. M., Spacone, E., Shing, P. B., and Frangopol, D. (1998). “Nonlinear analysis of composite beams with deformable shear connectors.” J. Struct. Eng., 1148–1158.
Stüssi, F. (1943). “Design and construction of composite solid web girders.” Schweizerische Bauzeitung, 121(8), 87–103 (in German).
Swiss Society of Engineers and Architects (SIA). (2003). “Swisscode—Concrete structures.”, Zurich, Switzerland.
Van de Kuilen, J.-W., and Knorz, M. (2012). “Results of tests conducted in preparation for European technical approval of beech-laminated veneer lumber.”, Technische Universität München (TUM), Munich, Germany (in German).
Yeoh, D., Fragiacomo, M., De Franceschi, M., and Buchanan, A. (2011a). “Experimental tests of notched and plate connectors for LVL-concrete composite beams.” J. Struct. Eng., 261–269.
Yeoh, D., Fragiacomo, M., De Franceschi, M., and Heng Boon, K. (2011b). “State of the art on timber-concrete composite structures: Literature review.” J. Struct. Eng., 1085–1095.
Yeoh, D., Fragiacomo, M., and Deam, B. (2011c). “Experimental behaviour of LVL-concrete composite floor beams at strength limit state.” Eng. Struct., 33(9), 2697–2707.
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Published In
Journal of Performance of Constructed Facilities
Volume 28 • Issue 6 • December 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jun 13, 2013
Accepted: Nov 26, 2013
Published online: Nov 28, 2013
Published in print: Dec 1, 2014
Discussion open until: Dec 11, 2014
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