Behavior of Fully Grouted Reinforced Concrete Masonry Shear Walls Failing in Flexure: Experimental Results
Publication: Journal of Structural Engineering
Volume 134, Issue 11
Abstract
In this paper, the possibility of achieving a high level of ductility by flexural yielding in fully grouted reinforced concrete masonry shear walls is evaluated. Six full-scale walls were tested to failure under reversed cyclic lateral loading to investigate the effects of amount and distribution of vertical reinforcement and the level of axial compressive stress on the inelastic behavior and ductility. Results showed that yielding of the outermost vertical bars extended to a height equivalent to half the wall length. Also, the top wall displacement (drift) at the onset of yielding of the vertical reinforcement was highly dependent on the amount of reinforcement, but only minimally affected by the level of axial compressive load. However, at maximum loads, the displacements were less sensitive to either the amount of vertical reinforcement or the level of axial compression. Correspondingly, the displacement ductility was found to be very sensitive to the amount of vertical reinforcement, but was not dependent on the level of axial compression. In general, high levels of ductility and energy dissipation capabilities accompanied by relatively small strength degradation were observed for the test specimens.
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Acknowledgments
This study forms a part of an ongoing research program in McMaster University Centre for Effective Design of Structures (CEDS) funded through the Ontario Research and Development Challenge Fund (ORDCF). This research falls under CEDS Focus Area I: Masonry Structures, and CEDS Focus Area II: Earthquake Engineering. The financial support of the Centre is greatly appreciated. Provision of mason time by Ontario Masonry Contractors Association and Canada Masonry Design Centre is appreciated. The supply of concrete blocks and grout by Boehmer Block Ltd. is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 11 • November 2008
Pages: 1754 - 1767
Copyright
© 2008 ASCE.
History
Received: Feb 21, 2007
Accepted: Apr 15, 2008
Published online: Nov 1, 2008
Published in print: Nov 2008
Notes
Note. Associate Editor: Li Bing
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