Experimental In-Plane Shear Strength Investigation of Reinforced Concrete Masonry Walls
Publication: Journal of Structural Engineering
Volume 132, Issue 3
Abstract
This paper presents test results of ten single-story reinforced concrete masonry shear walls. Test results are summarized and compared with design formulae specified by the New Zealand masonry design standard NZS 4230:1990 and by the National Earthquake Hazards Reduction Program. It was determined that the test walls exhibited shear strength significantly exceeding the NZS 4230:1990 maximum permissible shear stress, confirming that NZS 4230:1990 was overly conservative in accounting for masonry shear strength. It was also confirmed from the test results that masonry shear strength increases with the magnitude of applied axial compressive stress and the amount of shear reinforcement, but that the shear strength decreases inversely in relation to an increase in wall aspect ratio. In addition, it was shown that the postcracking performance of shear dominated walls was substantially improved when uniformly distributing the shear reinforcement up the height of the walls.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was funded by the Earthquake Commission Research Foundation (EQC). Materials and construction labor associated with the testing of masonry walls was provided by Firth Industries Ltd., W. Stevenson and Sons Ltd., and Ready Mix Concrete Ltd. Their contributions are gratefully acknowledged. The authors also wish to acknowledge contributions by Hank Mooy and Tony Daligan, who were responsible for the practical aspects in relation to testing of the wall specimens in the Civil Test Hall of the University of Auckland.
The opinions and conclusions presented herein are those of the authors, and do not necessarily reflect those of the University of Auckland or any of the sponsoring parties to this project.
References
Chen, Shi-Wen J., Hidalgo, P. A., Mayes, R. L., Clough, R. W., and McNiven, H. D. (1978). “Cyclic loading tests of masonry single piers, vol. 2: Height to width ratio of 1.” Report No. UCB/EERC-78/28, Earthquake Engineering Research Center, Univ. of California, Berkeley, Calif.
Hidalgo, P. A., Mayes, R. L., McNiven, H. D., and Clough, R. W. (1979). “Cyclic loading tests of masonry single piers. Vol. 3: Height to width ratio of 0.5.” Report No. UCB/EERC-79/12, Earthquake Engineering Research Center, Univ. of California, Berkeley, Calif.
Hiraishi, H. (1985). “Flexural behaviour of reinforced masonry walls.” Proc., 1st Meeting of the U.S.–Japan Joint Technical Coordinating Committee on Masonry Research, Tokyo.
Matsumura, A. (1988). “Shear strength of reinforced masonry walls.” Proc., 9th World Conf. on Earthquake Engineering, Vol. 7, 121–126.
Mayes, R. L., Omote, Y., and Clough, R. W. (1976). “Cyclic shear tests on masonry piers. Vol. 1: Test results.” Report No. UCB/EERC-76/8, Earthquake Engineering Research Center, Univ. of California, Berkeley, Calif.
National Earthquake Hazards Reduction Program (NEHRP). (1997). “Recommended provisions for seismic regulations for new buildings and other structures. Part 1: Provisions.” Building Seismic Safety Council, Washington, D.C.
Priestley, M. J. N. (1977). “Seismic resistance of reinforced concrete masonry shear walls with high steel percentages.” Bulletin of the New Zealand National Society for Earthquake Engineering, 10(1), 1–16.
Priestley, M. J. N. (1980). “Seismic design of masonry buildings—background to the draft masonry design code DZ 4210.” Bulletin of the New Zealand National Society for Earthquake Engineering, 13(4), 329–346.
Shing, P. B., Schuller, M., and Hoskere, V. S. (1990). “In-plane resistance of reinforced masonry shear walls.” J. Struct. Eng., 116(3), 619–640.
Sveinsson, B. I., Mayes, R. L., and McNiven, H. D. (1985). “Cyclic loading of masonry single piers. Vol. 4: Additional test with Height to Width Ratio of 1.” Report No. UCB/EERC-85/15, EarthquakeEngineering Research Center, Univ. of California, Berkeley, Calif.
Voon, K. C., and Ingham, J. M. (2001). “Toward suitable shear strength provisions for inclusion in the New Zealand masonry design standard.” Proc., 6th Australasian Masonry Conference, Adelaide, South Australia, 393–402.
Voon, K. C., and Ingham, J. M. (2003). “Shear strength of concrete masonry walls.” School of Engineering Report No. 611, Univ. of Auckland, Auckland, New Zealand.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 3 • March 2006
Pages: 400 - 408
Copyright
© 2006 ASCE.
History
Received: Aug 16, 2004
Accepted: Jul 26, 2005
Published online: Mar 1, 2006
Published in print: Mar 2006
Notes
Note. Associate Editor: Rob Y. H. Chai
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.