Two-Dimensional Grid Strut-Tie Model Approach for Structural Concrete
Publication: Journal of Structural Engineering
Volume 134, Issue 7
Abstract
Although approaches implementing strut-tie models are valuable tools for designing disturbed regions of structural concrete, the provisions of current design codes have to be improved because of uncertainties in terms of the selection of the strut-tie model and the structural type of strut-tie model. To improve the uncertainties, a grid strut-tie model approach is presented in this study. The presented approach, which allows for a consistent and effective design of structural concrete, employs a single type of grid strut-tie model whereby various load combinations can be considered. In addition, the approach performs an automatic selection of an optimal strut-tie model by evaluating the capacities of struts and ties using a simple optimization algorithm. The validity and effectiveness of the presented approach is verified by conducting the analyses of the eight reinforced concrete deep beams tested to failure and the design of the shear wall with two openings.
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Acknowledgments
This research was supported by the Korea Science and Engineering Foundation in Korea (KOSEFR01-2006-000-10722-0). The financial support is gratefully acknowledged.
References
Aguilar, G., Matamoros, A. B., Parra-Montesinos, G. J., and Ramirez, J. A. (2002). “Experimental evaluation of design procedures for shear strength of deep reinforced concrete beams.” ACI Struct. J., 99(4), 539–548.
Ali, M. A., and White, R. N. (2001). “Automatic generation of truss model for optimal design of reinforced concrete structures.” ACI Struct. J., 98(4), 431–442.
Alshegeir, A. (1992). “Analysis and design of disturbed regions with strut-tie models.” Ph.D. dissertation, School of Civil Engineering, Purdue Univ., West Lafayette, Ind.
AASHTO. (1998). AASHTO LRFD bridge design specifications, 2nd Ed., Washington, D.C.
American Concrete Institute (ACI). (1999). “Building code requirements for structural concrete.” ACI 318-99 and “Commentary” ACI 318R-99, Farmington Hills, Mich.
American Concrete Institute (ACI). (2005). “Building code requirements for structural concrete.” ACI 318-05 and “Commentary” ACI 318R-05, Farmington Hills, Mich.
Barnes, R. W. (2002). High wall with two openings—Examples for the design of structural concrete with strut-and-tie models, K. H. Reineck, ed., American Concrete Institute, Mich., 195–211.
Canadian Standards Association (CSA). (1984). “Design of concrete structures for buildings.” CAN3-A23.3-M84, Rexdale, Ont., Canada.
Comite Euro-International du Beton (CEB). (1990). CEB-FIP model code 1990, Telford, London.
Hong, S. G. (2000). “Strut-and-tie models and failure mechanisms for bar development in tension-tension-compression nodal zone.” ACI Struct. J., 97(1), 111–121.
Kwak, H. G., and Noh, S. H. (2003). “Determination of strut-and-tie models using evolutionary structural optimization.” J. Korean Soc. Civil Eng., 23(1), 1–11.
Liang, Q. Q., Uy, B., and Steven, G. P. (2002). “Performance-based optimization for strut-and-tie modeling of structural concrete.” J. Struct. Eng., 128(6), 815–823.
Liang, Q. Q., Xie, Y. M., and Steven, G. P. (2001). “Generating optimal strut-and-tie models in prestressed concrete beams by performance-based optimization.” ACI Struct. J., 98(2), 226–232.
Park, H. G., Kim, Y. G., and Uhm, T. S. (2005). “Direct inelastic strut-tie model using secant stiffness.” J. Korean Conc. Inst., 17(2), 201–212.
Tjhin, T. N., and Kuchma, D. A. (2002a). Alternative design for the non-slender beam—Examples for the design of structural concrete with strut-and-tie models, K. H. Reineck, ed., American Concrete Institute, Farmington Hills, Mich., 195–211.
Tjhin, T. N., and Kuchma, D. A. (2002b). “Computer-based tools for design by strut-and-tie method: Advances and challenges.” ACI Struct. J., 99(5), 586–594.
Schlaich, J., Schäfer, K., and Jennewein, M. (1987). “Towards a consistent design of structural concrete.” PCI J., 32, 74–150.
Smith, K. M., and Vantsiotis, A. S. (1982). “Shear strength of deep beams.” J. Am. Concr. Inst., 79(3), 201–213.
Yun, Y. M. (2000). “Nonlinear strut-tie model approach for structural concrete.” ACI Struct. J., 97(4), 581–590.
Yun, Y. M. (2005). “Effective strength of concrete strut in strut-tie model. I: Methods for determining effective strength of concrete strut.” J. Korean Soc. Civil Eng., 25(1), 49–59.
Yun, Y. M. (2006). “Strength of two-dimensional nodal zones in strut-tie models.” J. Struct. Eng., 132(11), 1764–1783.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 7 • July 2008
Pages: 1199 - 1214
Copyright
© 2008 ASCE.
History
Received: Jan 22, 2007
Accepted: Jul 25, 2007
Published online: Jul 1, 2008
Published in print: Jul 2008
Notes
Note. Associate Editor: Dat Duthinh
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