Analysis of Concrete Masonry Beams
Publication: Journal of Structural Engineering
Volume 121, Issue 11
Abstract
This paper presents an in-depth structural engineering and structural reliability analysis of concrete masonry beams. The ductile response of masonry beams was studied in detail. A limit-state design methodology for reinforced-concrete masonry beams is presented in this paper based on the principles of structural reliability. Recommended values of capacity-reduction factors were developed that explicitly account the design safety of the limit states. The reinforcing steel bars are uniformly distributed throughout the beam section. Three different ductility definitions (strain, curvature, and displacement) were derived and presented. This paper also formulated a structural reliability analysis method to establish limitations on the quantity of steel in masonry beams. Equations were derived for the expected capacity at yield and ultimate limit states. An important part of this paper was to quantify the uncertainty in the design capacity of concrete masonry beams of different limit states resulting from the variation of design variables. A Monte Carlo analysis was performed to incorporate the uncertainties in material properties, structural engineering equations, and construction quality control.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Am. Concrete Inst. (ACI). Building code requirement for concrete masonry structure (ACI 531-79)(revised 1981) and commentary . Detroit, Mich.
2.
Atkinson, R. H., and Kingsley, G. R. (1982). “A comparison of the behavior of clay and concrete masonry in compression.”Rep. to the Nat. Sci. Found., Atkinson-Noland and Assoc., Boulder, Colo.
3.
Hart, G. C., and Priestly, M. J. N. (1989). “Design recommendations for masonry moment resisting space frames.”Rep. No. SSRP 89/20, UCLA, Los Angeles, Calif.
4.
Hart, G. C., Sajjad, N. A., and Basharkhah, M. A. (1990). “Inelastic masonry flexural shear wall analysis computer program (IMFLEX).”EKEH Rep. No. 2.1-7, Englekirk and Hart Inc., Los Angeles, Calif.
5.
Hong, W. K. (1989). “Development of analytical methods for reinforced concrete masonry flexural walls,” PhD thesis, Univ. of California, Los Angeles (UCLA).
6.
Keller, H., and Sutter, G. T. (1981). “Variability of reinforced concrete masonry beam strength in flexural and shear.”Symp. Proc., ASTM Conf., ASTM, Philadelphia, Pa.
7.
Mirza, S. A., Hatzinikolas, M., and MacGregor, J. G.(1979). “Statistical descriptions of strength of concrete.”J. Struct. Div., ASCE, 105(6), 1021–1037.
8.
Mirza, S. A., and MacGregor, J. G.(1979). “Variability of mechanical properties of reinforcing bars.”J. Struct. Div., ASCE, 105(5), 921–937.
9.
National building code (ACI 530). (1981). Am. Concrete Inst. (ACI), Detroit, Mich.
10.
Park, R., and Pauley, T. (1975). Reinforced concrete structures. John Wiley and Sons, Inc., New York, N.Y.
11.
Priestly, M. J. N., and Hon, C. Y. (1985). “Seismic design of reinforced concrete masonry moment-resisting frames.”The Masonry Soc. J., 4(1).
12.
Priestley, M. J. N., and Park, R. (1984). “Strength and ductility of bridge substructures.”Res. Rep. 84-20, Dept. of Civ. Engrg., Univ. of Canterbury, England.
13.
Sajjad, N. A. (1990). “Confinement of concrete masonry,” PhD thesis, Univ. of California, Los Angeles (UCLA).
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 121 • Issue 11 • November 1995
Pages: 1598 - 1602
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Nov 1, 1995
Published in print: Nov 1995
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.