Optimized Design Charts for Fully Restrained Slabs by FE Predictions
Publication: Journal of Structural Engineering
Volume 124, Issue 5
Abstract
Previous test results of two-way fully restrained reinforced concrete slabs are used to optimize the model parameter values involved in a finite element program. The parameters whose sensitivities control the simulation process are identified through extensive parametric studies using both the displacement and load control strategies, and values are identified for them. Use of such values has been shown to guarantee reliable predictions of both the peak load and the corresponding deflection of arbitrary fully restrained rectangular slabs. A series of numerical predictions of over 850 “computer model” slabs are undertaken, varying the geometric and material properties, as well as the reinforcement ratios. The result is used for developing charts that may be used for the strength and displacement determination of arbitrary fully restrained slabs. The charts are used for the predictions of 36 previously tested slabs, in which the slab strength is predicted to within a mean accuracy of 2%, and the deflection is predicted to within a mean accuracy of 4%. Other practical applications of reliable numerical predictions are discussed.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
“Building code requirements for reinforced concrete.” (1989). ACI 318-89, American Concrete Institute, Detroit, Mich.
2.
Cedolin, L., and Deipoli, S.(1977). “Finite element studies of shear-critical R/C beams.”J. Engrg. Mech. Div., ASCE, 103(3), 395–410.
3.
“Design of concrete structures for buildings.” (1984). CAN3-A23.3 M84, Canadian Standard Association, Rexdale, Ontario, Canada.
4.
“Design of concrete structures, Part 1. General rules and rules for buildings.” (1992). Eurocode 2 DD ENV 1992-1-1, Comité Européen de Normalisation, Brussels, Belgium.
5.
Hossain, K. M. A., and Famiyesin, O. O. R. (1996a). “Finite element simulation of isotropically reinforced concrete slabs.”Res. Rep. No. EG-SE96-1, Department of Engineering, University of Aberdeen, Aberdeen, U.K.
6.
Hossain, K. M. A., and Famiyesin, O. O. R. (1996b). “Finite element simulation of anisotropically reinforced concrete slabs.”Res. Rep. No. EG-SE96-2, Department of Engineering, University of Aberdeen, Aberdeen, U.K.
7.
Hossain, K. M. A., and Famiyesin, O. O. R. (1996c). “Load control finite element simulation of slabs under different clamped support conditions.”Res. Rep. No. EG-SE96-5, Department of Engineering, University of Aberdeen, Aberdeen, U.K.
8.
Hossain, K. M. A., and Famiyesin, O. O. R. (1996d). “Reliability of finite element prediction based on direct simulation of fully clamped reinforced concrete slabs.”Res. Rep. No. EG-SE96-7, Department of Engineering, University of Aberdeen, Aberdeen, U.K.
9.
Hossain, K. M. A., and Famiyesin, O. O. R. (1996e). “Design charts for fully clamped reinforced concrete slabs.”Res. Rep. No. EG-SE96-8, Department of Engineering, University of Aberdeen, Aberdeen, U.K.
10.
Hung, T. Y., and Nawy, E. G. (1971). “Limit strength and serviceability factors in uniformly loaded, iso-tropically reinforced two way slabs.”ACI SP-30, American Concrete Institute, Detroit, Mich., 301–324.
11.
Johansen, K. W. (1962). “Yield line theory.” Cement and Concrete Association, London, U.K.
12.
Keenan, W. A. (1969). “Strength and behavior of restrained reinforced concrete slabs under static and dynamic loading.”Tech. Rep. R621, U.S. Naval Civil Engineering Laboratory, Port Hueneme, Calif.
13.
Kirkpatrick, J., et al. (1984). “Strength evaluation of M-beam bridge deck slabs.”The Struct. Engr., London, U.K., 62B(3), 60–68.
14.
Kupfer, K. H., Hilsdorf, K. H., and Rush, H.(1969). “Behavior of concrete under biaxial stresses.”Proc., Am. Concrete Inst., 66(8), 656–666.
15.
Leet, K. M., and Bernal, D. (1996). Reinforced concrete design, 3rd Ed., McGraw-Hill, Inc., New York, N.Y.
16.
Moy, S. S. J., and Mayfield, B.(1972). “Load-deflection characteristics of rectangular reinforced concrete slabs.”Mag. of Concrete Res., London, U.K., 24(81), 209–218.
17.
Niblock, R. A. (1986). “Compressive membrane action and the ultimate capacity of uniformly loaded reinforced concrete slabs,” PhD thesis, The Queen's University of Belfast, Belfast, U.K.
18.
“Norwegian standard for design of concrete structures.” (1989). NS 3473, The Norwegian Council for Building Standardisation, N. B. R., Oslo, Norway.
19.
Ockleston, A. J. (1958). “Loading tests on reinforced concrete slabs spanning in two directions.”Paper No. 6. Portland Cement Institute, Richmond, South Africa.
20.
Owen, D. R. G., and Figueriras, J. A. (1984). “Ultimate load analysis of reinforced concrete plates and shells including geometric nonlinear effects.”Finite element software for plates and shells, E. Hinton and D. R. J. Owen, eds., Pineridge Press, Swansea, U.K.
21.
Park, R. (1964). “Ultimate strength of rectangular concrete slabs under short term uniform loading with edges restrained against lateral movement.”Proc., Inst. of Civ. Engrs., London, U.K., 125–150.
22.
Powell, D. S. (1956). “Ultimate strength of concrete panels subjected to uniformly distributed loads,” PhD thesis, Cambridge University, Cambridge, U.K.
23.
Rankin, G. B.(1991). “Compressive membrane action strength enhancement in uniformly loaded laterally restrained slabs.”The Struct. Engr., London, U.K., 69(16), 287–295.
24.
Skates, A. S. (1986). “Development of a design method for restrained concrete slab systems subject to concentrated and uniform loading,” PhD thesis, The Queen's University of Belfast, Belfast, U.K.
25.
“Structural use of concrete, Part 1. Code of practice for design and construction.” (1985). BS8110, British Standard Institute, London, U.K.
26.
Whitney, C. S.(1937). “Design of reinforced concrete members under flexure or combined and direct compression.”Proc., Am. Concrete Inst., 33, 483–498.
27.
Wood, R. H. (1961). Plastic and elastic design of slabs and plates. Thames and Hudson, London, U.K.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 124 • Issue 5 • May 1998
Pages: 560 - 569
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: May 1, 1998
Published in print: May 1998
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.