Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Limit load equations for partially restrained RC slabs

  • Olufemi, O.O. (School of Engineering and Physical Sciences, University of Aberdeen) ;
  • Cheung, K.L. (School of Engineering and Physical Sciences, University of Aberdeen) ;
  • Hossain, K.M.A. (Department of Civil Engineering, Ryerson University)
  • Received : 2002.05.27
  • Accepted : 2004.08.20
  • Published : 2005.01.10
⟨ Previous Next ⟩

Abstract

The expertise required in the judicious use of nonlinear finite element (FE) packages for design-assistance purposes is not widely available to the average engineer, whose sole aim may be to obtain an estimate for a single design parameter, such as the limit load capacity of a structure. Such a parameter may be required for the design of a proposed reinforced concrete (RC) floor slab or bridge deck with a given set of geometrical and material details. This paper outlines a procedure for developing design-assistance equations for carrying out such predictions for partially restrained RC slabs under uniformly distributed loading condition, based on a database of FE results previously generated from a large number of 'numerical model' slabs. The developed equations have been used for predicting the peak loads of a number of experimental RC slabs having varying degrees of edge restraints; with results showing a reasonable degree of accuracy and low level of scatter. The simplicity of the equations makes them attractive and their successful use in the field of application reported in this paper suggest that the outlined procedure may also be extended to other classes of concrete structures.

Keywords

References

  1. ACI 318-89. (1989), 'Building code requirements for reinforced concrete', ACI Committee 318, American Concrete Institute, Detroit
  2. BS8110 (1985), 'Structural use of concrete, Part 1. Code of practice for design and construction', British Standard Institute, London
  3. Famiyesin, O.O.R. and Hossain, K.M.A. (1998a), 'Optimised design charts for fully restrained slabs by FE predictions', J. Struct. Engrg., ASCE, 124(5), 560-569 https://doi.org/10.1061/(ASCE)0733-9445(1998)124:5(560)
  4. Famiyesin, O.O.R. and Hossain, K.M.A. (1998b), 'Development of charts for partially clamped slabs by FE predictions', J. Struct. Engrg., ASCE, 124(11), 1339-1349 https://doi.org/10.1061/(ASCE)0733-9445(1998)124:1(1)
  5. Herniter, ME (2001), Programming in MATLAB, Brookes/Cole - Thomson Learning, California.
  6. Hossain, K.M.A. and Famiyesin, O.O.R. (1997), 'Design charts for simply supported concrete slabs based on finite element procedures', Proc., 5th Int. Conf. on Computational Plasticity (COMPLAS), Barcelona, 1508-1513
  7. Hossain, K.M.A. and Famiyesin, O.O.R. (1998), 'Application of finite element modelling to the design of partially clamped slabs', Proc., Australasian Structural Engineering Conf., Auckland, New Zealand, 1, 281-288
  8. Hossain, K.M.A. and Famiyesin, O.O.R. (2001), 'An intelligent system for the design of RC slabs', Struct. Eng. Mech., 12(3), 297-312 https://doi.org/10.12989/sem.2001.12.3.297
  9. 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
  10. Keenan, W.A. (1969), 'Strength and behaviour of restrained reinforced concrete slabs under static and dynamic loading', Technical Report R621, U.S. Naval Civil Engineering Laboratory, Port Hueneme, California, April
  11. Nawy, E.G. and Blair, K.W. (1971), 'Further studies on flexural crack control in structural slab systems', ACI SP-30, American Concrete Inst., Detroit, Mich., 1-41
  12. Owen, D.R.J. and Figueiras, J.A. (1984), 'Ultimate load analysis of reinforced concrete plates and shells including geometric nonlinear effects', In Finite element software for plates and shells, (Editors: E. Hinton and D.R.J. Owen), Pineridge Press, Swansea, U.K., 327-388
  13. Park, R. (1964), 'Ultimate strength of rectangular concrete slabs under short term uniform loading with edges restrained against lateral movement', Proc., Institution of Civil Engrs., London, U.K., 125-150
  14. Wood, R.H. (1961), Plastic and Elastic Design of Slabs and Plates, Thames and Hudson, London

Cited by

  1. Coupling effects between wind and train transit induced fatigue damage in suspension bridges vol.70, pp.3, 2005, https://doi.org/10.12989/sem.2019.70.3.311