Cover
Vol. 10 No. 1 (2010)

Published: June 30, 2010

Pages: 97-111

Original Article

Experimental Investigation of the Strength and Behavior of Reinforced Concrete Spandrel Beams Under Repeated Loads

Abstract

The main objective of this study is to investigate the effect of repeated load on the strength and behavior of the spandrel beam by considering eight specimens divided into four groups based on the design methods; type of cross-section of the spandrel beam and the type of loading. Two design methods, two types of loading and two types of cross sel.1ions for spandrel beam are considered, the first is a solid rectangular section, while the other is a hollow rectangular section. The effect of repeated loads on the crack's width, deflections, torque, and angle of twist is studied using two stages of loading, the first stage is at the soft-cracking stage after the occurring of cracks in the spandrel beam and the second stage is the yielding of the bottom longitudinal reinforcement of the floor beam.

References

  1. Charles H. Norris, "Structural Design for Dynamic Loads", McGraw-Hill Civil Engineering Series, 1959, pp. 20.
  2. Saether, K. and Prachand, N. M., "Torsion in Spandrel Beam", ACI Journal, Vol. 66, No. 1, January 1969, pp. 24-30.
  3. Collins, M.P. and Lampert, P., "Redistribution of Moments at Cracking - The Key to Simpler Torsion Design", Analysis of Structural Systems for Torsion, ACI publications, SP-35, Detroit, 1973, pp. 343-384.
  4. Hsu, T.T.C., and Burton, K. T., "Design of Reinforced Concrete Spandrel Beam", Journal of Structural Division, Proc. of ASCE, Vol. 100, No. St1, January 1974, pp. 209-229.
  5. American Concrete Institute, "Building Code Requirement for Reinforced Concrete", ACI 318-77, Detroit, October 1977.
  6. Hsu, T.T.C., "Torsion of Structural Concrete - Behavior of Reinforced Concrete Rectangular Members", Special Publications, SP-18, ACI, Detroit, 1968.
  7. Hsu, T.T.C., "Background and Practical Application of Tentative Design Criteria for Torsion", ACI Structural Journal, Vol. 66, No. 1, January 1969, pp. 12-23.
  8. Mansur, M. A. and Rangan, B. V., "Repeated Loading of Reinforced Concrete Spandrel Beams", The University of New South Wales Sydney, Australia, Pres, Reinforced Concrete Component, 1981, pp. 323-341.
  9. Mohamad Ali, A.A., "Strength and Behavior of Reinforced Concrete Spandrel Beam", Ph.D. Thesis, University of Edinburgh, 1983.
  10. American Concrete Institute, "Building Code Requirements for Reinforced Concrete", ACI 318-05, Detroit, November 2005.