Special Detailing Techniques to Improve Structural Resistance against Progressive Collapse
Publication: Journal of Structural Engineering
Volume 140, Issue 3
Abstract
Previous research work has found that catenary action can significantly increase structural resistance in addition to flexural capacity under column removal scenarios. However, whether reinforcements in beams can effectively function as ties to develop catenary action against progressive collapse is a big concern in current engineering practice because of the limited rotational capacity of RC beam-column connections. Therefore, four RC frame specimens were designed and tested to investigate their structural behavior under a column removal scenario. In addition to a specimen designed with conventional detailing in accordance with ACI 318-05, the other three specimens were designed with special detailing techniques at little or no additional cost, endeavoring to improve catenary action capacity at large deformations without reducing the structural resistance at small deformations. The special detailing included placing an additional reinforcement layer at the midheight of beam sections, partially debonding bottom reinforcing bars in the joint region, and setting partial hinges at one beam depth away from the adjacent joint interfaces. Furthermore, the nonlinear static responses obtained from the tests were used to evaluate the progressive collapse resistances of the four specimens with the consideration of dynamic effect. With systematic instrumentation, the effects of detailing techniques on structural behavior are demonstrated in this paper at different levels. In particular, the mechanism of each special detailing to affect beam-column connection rotations is illustrated and discussed in detail. Finally, suggestions on structural design against progressive collapse via catenary action are provided.
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Acknowledgments
The authors gratefully acknowledge the funding provided by Defence Science and Technology Agency, Singapore.
References
Alashker, Y., El-Tawil, S., and Sadek, F. (2010). “Progressive collapse resistance of steel-concrete composite floors.” J. Struct. Eng., 1187–1196.
American Concrete Institute (ACI). (2005). “Building code requirements for structural concrete.” ACI 318-05, Farmington Hills, MI.
Choi, H., and Kim, J. (2011). “Progressive collapse-resisting capacity of RC beam–column sub-assemblage.” Mag. Concr. Res., 63(4), 297–310.
Corley, W. G., Mlakar, P. F., Sozen, M. A., and Thornton, C. H. (1998). “The Oklahoma City bombing: Summary and recommendations for multihazard mitigation.” J. Perform. Constr. Facil., 100–112.
Debernardi, P. G., and Taliano, M. (2002). “On evaluation of rotation capacity for reinforced concrete beams.” ACI Struct. J., 99(3), 360–368.
Department of Defense (DoD). (2010). “Design of buildings to resist progressive collapse.”, Washington, DC.
General Services Administration (GSA). (2003). Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects, Washington, DC.
Hayes, J. R., Jr., Woodson, S. C., Pekelnicky, R. G., Poland, C. D., Corley, W. G., and Sozen, M. (2005). “Can strengthening for earthquake improve blast and progressive collapse resistance?” J. Struct. Eng., 1157–1177.
Izzuddin, B. A., Vlassis, A. G., Elghazouli, A. Y., and Nethercot, D. A. (2008). “Progressive collapse of multi-storey buildings due to sudden column loss—Part I: Simplified assessment framework.” Eng. Struct., 30(5), 1308–1318.
Liu, C., Fung, T. C., and Tan, K. H. (2012). “Numerical analysis on dynamic behaviour of flush end plate beam-column connections subjected to sudden column removal scenario.” 4th Int. Conf. on Design and Analysis of Protective Structures, Agency for Defense Development, Daejeon, Korea.
Lowes, L. N., Moehle, J. P., and Govindjee, S. (2004). “Concrete-steel bond model for use in finite element modeling of reinforced concrete structures.” ACI Struct. J., 101(4), 501–511.
Panagiotakos, T. B., and Fardis, M. N. (2001). “Deformations of reinforced concrete members at yielding and ultimate.” ACI Struct. J., 98(2), 135–148.
Sadek, F., Main, J. A., and Lew, H. S. (2009). “Testing and analysis of steel beam-column assemblies under column removal scenarios.” Structures Congress 2009, Structural Engineering Institute of the American Society of Civil Engineers, Reston, VA, 1708–1717.
Sadek, F., Main, J. A., Lew, H. S., and Bao, Y. (2011). “Testing and analysis of steel and concrete beam-column assemblies under a column removal scenario.” J. Struct. Eng., 137(9), 881–892.
Sasani, M., and Kropelnicki, J. (2008). “Progressive collapse analysis of an RC structure.” Struct. Des. Tall Special Build., 17(4), 757–771.
Sasani, M., and Sagiroglu, S. (2008). “Progressive collapse of reinforced concrete structures: A multihazard perspective.” ACI Struct. J., 105(1), 96–103.
Sezen, H., and Setzler, E. J. (2008). “Reinforcement slip in reinforced concrete columns.” ACI Struct. J., 105(3), 280–289.
Su, Y., Tian, Y., and Song, X. (2009). “Progressive collapse resistance of axially-restrained frame beams.” ACI Struct. J., 106(5), 600–607.
Yi, W., He, Q., Xiao, Y., and Kunnath, S. K. (2008). “Experimental study on progressive collapse-resistant behavior of reinforced concrete frame structures.” ACI Struct. J., 105(4), 433–439.
Yu, J., and Tan, K. H. (2011). “Experimental and numerical investigation on progressive collapse resistance of reinforced concrete beam column sub-assemblages.” Eng. Struct., in press.
Yu, J., and Tan, K. H. (2012). “Bar stress-slip relationship in reinforced concrete joints with large inelastic bar strains.” 4th Int. Conf. of Design and Analysis of Protective Structures, Agency for Defense Development, Daejeon, Korea.
Yu, J., and Tan, K. H. (2013). “Structural behavior of reinforced concrete beam-column sub-assemblages under a middle column removal scenario.” J. Struct. Eng., 233–250.
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© 2013 American Society of Civil Engineers.
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Received: Oct 21, 2012
Accepted: May 29, 2013
Published online: Jun 1, 2013
Published in print: Mar 1, 2014
Discussion open until: Apr 18, 2014
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