Mechanical Behavior of an Innovative Hybrid Beam Made of Glulam and Ultrahigh-Performance Concrete Reinforced with FRP or Steel
Publication: Journal of Composites for Construction
Volume 14, Issue 2
Abstract
The main objective of the research project reported here is to develop a new hybrid glulam beam that will increase the performance of timber structures and optimize the use of wood in such structures. The hybrid beam is made by combining glulam with ultrahigh-performance short fiber-reinforced concrete (UHPC-SFR) planks with or without internal reinforcement consisting of steel- or fiber-reinforced polymer reinforcement bars. This paper presents an experimental program of tests on eight large-scale hybrid beams under four-point bending. The results show that by combining wood and UHPC-SFR, it is possible to obtain a hybrid beam with greater bending stiffness and increased ultimate load capacity.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The UHPC Ductal mix was supplied by Lafarge and the V-Rod reinforcement bars for this project were provided by Pultrall. The material contribution and the technical support from both companies is gratefully acknowledged.
References
American Plywood Association. (2007). Engineered wood construction guide, American Plywood Association (APA), Tacoma, Wash., 1–80.
ASTM. (2005). “Standard test methods for mechanical properties of lumber and wood-base structural material.” ASTM D4761-05, West Conshohocken, Pa.
ASTM. (2008). “Standard practice for establishing allowable properties for structural glued laminated timber (glulam).” ASTM D3737-08, West Conshohocken, Pa.
Buell, T. W., and Saadatmanesh, H. (2005). “Strengthening timber bridge beams using carbon fiber.” J. Struct. Eng., 131(1), 173–187.
Dalsgaard, J., Svensson, S., and Dela, B. (2005). “Reliability-based calibration of load duration factors for timber structures.” Struct. Safety, 27, 153–169.
Eurocode 5. (2005). “Eurocode 5—Design of timber structures, part 1.1: General—Common rules and rules for buildings.” NF EN 1995-1-1, AFNOR Standards.
Fragiacomo, M., Gutkowski, R., Balogh, J., and Fast, R. S. (2007). “Long-term behavior of wood-concrete composite floor/deck systems with shear key connection detail.” J. Struct. Eng., 133(9), 1307–1315.
Fridley, K. J. (2002). “Wood and wood-based materials: Current status and future of a structural material.” J. Mater. Civ. Eng., 14(6), 531–539.
Gentile, C., Svecova, D., and Rizkalla, S. H. (2002). “Timber beams strengthened with GFRP bars: development and applications.” J. Compos. Constr., 6(1), 11–20.
Graybeal, B. (2008). “Flexural behaviour of an ultrahigh-performance concrete I-girder.” J. Bridge Eng., 13(6), 602–610.
Graybeal, B., and Tanesi, J. (2007). “Durability of an ultrahigh-performance concrete.” J. Mater. Civ. Eng., 19(10), 848–854.
Habel, K., Viviani, M., Denarié, E., and Brühwiler, E. (2006). “Development of the mechanical properties of an ultra-high performance fiber reinforced concrete (UHPFRC).” Cem. Concr. Res., 36, 1362–1370.
Köhler, M. H. F. J., and Sorensen, J. D. (2004). “Probabilistic modeling of graded timber material properties.” Struct. Safety, 26, 295–309.
Moody, R. C. and Hernandez, R., and (1997). Engineered wood product, S. Smulski, ed., PFS Research Foundation, Madison, Wis., 1–39.
Racher, P., Bocquet, J. F., and Bouchair, A. (2007). “Effect of web stiffness on the bending behaviour of timber composite I-beams.” Mater. Des., 28, 844–849.
Wipf, T. J., Klaiber, F. W., and Funke, R. W. (1990). “Longitudinal glued laminated timber bridge modelling.” J. Struct. Eng., 116(4), 1121–1134.
Information & Authors
Information
Published In
Copyright
© 2010 ASCE.
History
Received: Nov 21, 2008
Accepted: Aug 24, 2009
Published online: Aug 26, 2009
Published in print: Apr 2010
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.