Optimized Design of Foam Cladding for Protection of Reinforced Concrete Members under Blast Loading
Publication: Journal of Structural Engineering
Volume 141, Issue 9
Abstract
A load-cladding-structure (LCS) model was used to study the mitigating effect provided by metallic foam cladding against blast loading on reinforced concrete (RC) structural members. The model considered the interactions between an external blast load, a protecting foam cladding, and a target RC structural member. The effectiveness of the LCS model was validated by field blast tests conducted in 2009. The validated model was then used to derive pressure impulse diagrams of the foam-protected RC members. Afterwards, two nondimensional parameters representing the relationship between the foam cladding and the target RC member were characterized. Using the suggested nondimensional parameters, normalized pressure-impulse () diagrams for the foam-protected RC members were generated. The effects of the two nondimensional parameters on the diagrams were investigated by comparing the corresponding asymptotes. Based on the predicted results, an optimized design of the foam cladding for RC structural members was suggested.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The research presented in this paper jointly supported by the National Natural Science Foundation of China under Grant 51278326, the National Key Technology R&D Program of the Ministry of Science and Technology of China (2012BAJ07B05), and the ARC Discovery Grant DP140103025, is gratefully acknowledged.
References
Dragos, J., and Wu, C. (2013). “A new general approach to derive normalised pressure impulse curves.” Int. J. Impact Eng., 62, 1–12.
Dragos, J., Wu, C., Haskett, M., and Oehlers, D. (2013). “Derivation of normalized pressure impulse curves for flexural ultra high performance concrete slabs.” J. Struct. Eng., 875–885.
Haskett, M., Oehlers, D. J., Mohamed Ali, M. S., and Wu, C. (2009). “Rigid body rotation mechanism for reinforced concrete beam hinges.” Eng. Struct., 31(5), 1032–1041.
Li, J. D., Ma, G. W., Zhou, H. Y., and Du, X. L. (2011). “Blast mitigation of civil structures by using density gradient aluminium foam cladding.” Int. J. Prot. Struct., 2(3), 333–350.
Li, Q. M., and Meng, H. (2002). “Pressure-impulse diagram for blast loads based on dimensional analysis and single-degree-of-freedom model.” J. Eng. Mech., 87–92.
Ma, G. W., and Ye, Z. Q. (2007a). “Analysis of foam cladding for blast alleviation.” Int. J. Impact Eng., 34(1), 60–70.
Ma, G. W., and Ye, Z. Q. (2007b). “Energy absorption of double-layer foam cladding for blast alleviation.” Int. J. Impact Eng., 34(2), 329–347.
Ma, G. W., Ye, Z. Q., and Shao, Z. S. (2009). “Modelling loading rate effect on crushing stress of metallic cellular materials.” Int. J. Impact Eng., 36(6), 775–782.
Mays, G. C., and Smith, P. D. (1995). Blast effects on buildings—Design of buildings to optimize resistance to blast loading, Thomas Telford, London.
Shi, Y., Hao, H., and Li, Z. X. (2008). “Numerical derivation of pressure-impulse diagrams for prediction of RC column damage to blast loads.” Int. J. Impact Eng., 35(11), 1213–1227.
Slavik, T. (2010). “A coupling of empirical explosive blast loads to ALE air domains in LS-DYNA.” 7th European LS-DYNA Conf. Salzburg Austria.
U.S. Department of the Army, Navy, and Air Force. (2008). “Structures to resist the effect of accidental explosions.” Technical Manual UFC-3-340-02.
Wu, C., and Sheikh, H. (2013). “A finite element modelling to investigate the mitigation of blast effects on reinforced concrete panel using foam cladding.” Int. J. Impact Eng., 55, 24–33.
Wu, C., and Zhou, Y. (2011). “Simplified analysis of foam cladding protected reinforced concrete slabs against blast loadings.” Int. J. Prot. Struct., 2(3), 351–366.
Ye, Z. Q., and Ma, G. W. (2007). “Effects of foam claddings for structure protection against blast loads.” J. Eng. Mech., 41–47.
Zhu, C., Lin, Z., Chia, Y., and Chong, K. (2009). “Protection of reinforced concrete structure against blast loading.”, School of Civil and Environmental Engineering, Univ. of Adelaide, Adelaide, Australia.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 141 • Issue 9 • September 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 12, 2014
Accepted: Sep 11, 2014
Published online: Oct 17, 2014
Discussion open until: Mar 17, 2015
Published in print: Sep 1, 2015
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.