Shear Capacity of Doubly Skinned Composite Beams with Lacings
Publication: Journal of Structural Engineering
Volume 142, Issue 12
Abstract
The provision of shear stirrups/connectors is found to enhance the shear capacity of beams, thus preventing the brittle mode of failure. A doubly skinned composite system consists of steel cover plates on either side of infill material that are connected by means of shear connectors. Laced steel-concrete composite (LSCC) is a recently developed doubly skinned composite structural system, which is found to possess high ductility. In this paper, a model to predict the shear capacity of LSCC beams is proposed. Applicability of the model is verified through the experimental response. The performance of LSCC beams in terms of nominal failure shear stress is compared with that of laced reinforced concrete (LRC) beams and steel-concrete composite (SCC) beams with other forms of shear connectors such as through-through and J-hook connectors. Shear capacities of LSCC beams are found to be about 25% more than that of laced reinforced concrete (LRC) beams with a shear span to depth ratio of 2.0, while they are found to be equal to that of LRC beams with a shear span to depth ratio of 1.5. The predicted linear strains in lacing compare well with that measured in experiments.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This paper is published with kind permission of the Director of CSIR-SERC.
References
Anandavalli, N., Lakshmanan, N., and Samuel Knight, G. M. (2012a). “Simplified approach for finite element analysis of laced reinforced concrete beams.” ACI Struct. J., 109(1), 91–100.
Anandavalli, N., Lakshmanan, N., Samuel Knight, G. M., Iyer, N. R., and Rajasankar, J. (2012b). “Performance of laced steel-concrete composite (LSCC) beams under monotonic loading.” Eng. Struct., 41, 177–185.
Ardila-Giraldo, O. A. (2010). “Investigation on the initial response of beams to blast and fluid impact.” Ph.D. thesis, Purdue Univ., West Lafayette, IN.
Chalioris, C. E., Favvata, M. J., and Karayannis, C. G. (2008). “Reinforced concrete beam-column joints with crossed inclined bars under cyclic deformations.” Earthquake Eng. Struct. Dyn., 37(6), 881–897.
Karayannis, C. G., and Chalioris, C. E. (2013). “Shear tests of reinforced concrete beams with continuous rectangular spiral reinforcement.” Constr. Build. Mater., 46, 86–97.
Lakshmanan, N., et al. (2008). “Behaviour of RC beams with continuous inclined web reinforcement under reverse cyclic shear loading with and without steel fibres.” Proc., 7th RILEM Int. Symp. on Fibre Reinforced Concrete 2008 (BEFIB-2008), RILEM Publications, 1119–1136.
Liew, J. R., and Sohel, K. M. A. (2009). “Lightweight steel-concrete–steel sandwich system with J-hook connectors.” Eng. Struct., 31(5), 1166–1178.
Magnusson, J. (2007). “Structural concrete elements subjected to air blast loading.” Licentiate thesis, Royal Institute of Technology, Stockholm, Sweden.
Magnusson, J., and Hallgren, M. (2002). “High strength concrete beams subjected to shock waves from air blast.” Proc., 6th Int. Symp. on Utilization of High Strength/High Performance Concrete, 355–368.
Magnusson, J., and Hallgren, M. (2004). “Reinforced high strength concrete beams subjected to air blast loading.” 8th Int. Conf. on Structures under Shock and Impact Iraklion, WIT Press, Southampton, U.K.
Öztürk, H., and Ayvaz, Y. (2002). “Comparative study of behavior of reinforced concrete beams strengthened and repaired-strengthened by using connecting bars and connecting stirrups.” Constr. Build. Mater., 16(6), 321–329.
Said, M., and Elrakib, T. M. (2013). “Enhancement of shear strength and ductility for reinforced concrete wide beams due to web reinforcement.” HBRC J., 9(3), 235–242.
Sheikh, S. A., and Toklucu, M. T. (1993). “Reinforced concrete columns confined by circular spirals and hoops.” ACI Struct. J., 90(5), 542.
Sohel, K. M. A., Liew, J. R., Yan, J. B., Zhang, M. H., and Chia, K. S. (2012). “Behavior of steel-concrete–steel sandwich structures with lightweight cement composite and novel shear connectors.” Compos. Struct., 94(12), 3500–3509.
U.S. Department of the Army, Navy, and Air Force. (1990). “Structures to resist the effect of accidental explosions.”, Washington, DC.
Wright, H. D., Oduyemi, T. O. S., and Evans, H. R. (1991). “The experimental behaviour of double skin composite elements.” J. Constr. Steel Res., 19(2), 97–110.
Xie, M., Foundoukos, N., and Chapman, J. C. (2007). “Static tests on steel-concrete–steel sandwich beams.” J. Constr. Steel Res., 63(6), 735–750.
Yang, K. H., Kim, G. H., and Yang, H. S. (2011). “Shear behavior of continuous reinforced concrete T-beams using wire rope as internal shear reinforcement.” Constr. Build. Mater., 25(2), 911–918.
Zangeneh Kamali, A. (2012). “Shear strength of reinforced concrete beams subjected to blast loading: Non-linear dynamic analysis.” M.S. thesis, Royal Institute of Technology (KTH), Stockholm, Sweden.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 142 • Issue 12 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 6, 2015
Accepted: May 2, 2016
Published online: Jul 11, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 11, 2016
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.