Deformation-Controlled Design of Reinforced Concrete Flexural Members Subjected to Blast Loadings
Publication: Journal of Structural Engineering
Volume 134, Issue 10
Abstract
Both maximum displacement and displacement ductility factors should be considered in the design of a blast-resistant structure since both parameters correlate with an expected performance level of a reinforced concrete (RC) structural member during a blast event. The blast-resistant design procedure discussed in this paper takes into account both the maximum displacement and displacement ductility responses of an equivalent single-degree-of-freedom (SDOF) system, while the response of the SDOF system is made equivalent to the corresponding targets of design performance. Some approximate errors are present when comparing the actual responses of the structural member, which has been designed for blast loading, and their corresponding design performance targets. Two indices are defined to quantify the approximation errors, and their expressions are obtained through comprehensive numerical and statistical analyses. By using the error indices, the design procedure is then modified such that the approximate responses of the RC member are equivalent to the targets of the design performance. The modified procedure is implemented in three design examples and numerically evaluated. It is concluded that the modified procedure can be used more effectively in order to ensure that the actual responses of designed members reflect the respective targets of design performance.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was supported by Research Grant LEO 99.05 provided by the Defense Science and Technology Agency (DSTA), Singapore. Special thanks are due to John Crawford, President of Karagozian and Case for his critical reading of the paper and many invaluable suggestions for improvement.
References
ABAQUS. (2003). ABAQUS standard user’s manual, Hibbert, Karlsson, and Sorensen, Inc., Pawtucket, R.I.
ASCE. (1985). “Design of structures to resist nuclear weapons effects.” ASCE manual 42, ASCE, Reston, Va.
Biggs, J. M. (1964). Introduction to structural dynamics, McGraw-Hill, New York.
Hilleborg, A., Modeer, M., and Petersson, P. E. (1976). “Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements.” Cem. Concr. Res., 6, 773–782.
Kottegoda, N. T., and Rosso, R. (1996). Statistical, probability, and reliability for civil and environmental engineers, McGraw-Hill, New York.
Li, B., Huang, Z., Rong, H.-C., and Huang, Z. (2006). “Deformation-controlled design of RC flexural members subjected to blast loadings.” Proc., 2nd Int. Conf. on Design and Analysis of Protective Structures, November 13–15, Singapore.
Malvar, L. J., and Crawford, J. E. (1998a). “Dynamic increase factors for concrete.” Proc., 28th of the Department of Defense Explosives Safety Board Seminar, Orlando, Fla., U.S. Department of Defense, Washington, D.C.
Malvar, L. J., and Crawford, J. E. (1998b). “Dynamic increase factors for steel reinforcing bars.” Proc., 28th of the Department of Defense Explosives Safety Board Seminar, Orlando, Fla., U.S. Department of Defense, Washington, D.C.
MATLAB. (2001). The language of technical computing, The MathWorks, Inc., Natick, Mass.
Naval Facilities Engineering Command (NFEC). (1986). “Blast resistant structures.” Design Manual 2.08, NFEC, Alexandria, Va.
Rong, H.-C. (2005). “Performance-based blast resistant design of reinforced concrete frame structures under distant explosions.” Ph.D. thesis, Nanyang Technological Univ., Singapore.
Rong, H.-C., and Li, B. (2007). “Probabilistic response evaluation for RC flexural members subjected to blast loadings.” Struct. Safety, 29(2), 146–163.
Schmidt, J. A. (2003). “Structural design: Structural design for external terrorist bomb attacks.” Structure Magazine (A Joint Publication of ), March, 1–5.
U.S. Army. (1986). “Fundamentals of protective design for conventional weapons.” TM5-855-1, U.S. Army, Washington, D.C.
U.S. Army. (1990). “Structures to resist the effects of accidental explosions.” TM-1300, U.S. Army, Washington, D.C.
Information & Authors
Information
Published In
Copyright
© 2008 ASCE.
History
Received: May 9, 2007
Accepted: Feb 29, 2008
Published online: Oct 1, 2008
Published in print: Oct 2008
Notes
Note. Associate Editor: Gary Consolazio
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.