Out-of-Plane Behavior of One-Way Spanning Unreinforced Masonry Walls
Publication: Journal of Engineering Mechanics
Volume 139, Issue 4
Abstract
An analytical model is developed to describe the out-of-plane response of one-way spanning unreinforced masonry (URM) walls by investigating the effects of various parameters. Horizontal crack height, masonry compressive strength, and diaphragm support stiffness properties are assumed as variables, and sensitivity analyses are performed to study the influence of these parameters on the cracked wall characteristic behavior. The parametric studies show that crack height significantly influences wall stability by affecting both the instability displacement and the wall lateral resistance. The reduction in cracked wall lateral resistance and in the instability displacement caused by finite masonry compressive strength is shown to be significantly amplified by the applied overburden. A study using the typical configuration of flexible diaphragms and URM walls indicates that the wall top support flexibility does not significantly influence cracked wall out-of-plane response. An existing simplified wall behavioral model is improved, and a procedure is proposed for calculation of the wall out-of-plane response envelope.
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Acknowledgments
The authors acknowledge the financial support provided by the New Zealand Government via the Foundation for Research Science and Technology (FRST).
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 139 • Issue 4 • April 2013
Pages: 409 - 417
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jun 9, 2010
Accepted: Oct 17, 2011
Published online: Oct 20, 2011
Published in print: Apr 1, 2013
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