Load-Deflection Analyses of Double Wythe Unreinforced Masonry Walls
Publication: Journal of Structural Engineering
Volume 127, Issue 9
Abstract
A new analysis method for unreinforced masonry double wythe walls is developed and presented in this paper. The technique uses empirical formulas for the effective flexural rigidity of a masonry wall as obtained from a finite-element analysis of a masonry couplet. These formulas, together with equations that relate the moments in the block and brick wythes and the ties, are used in a 1D analysis of the masonry wall. The method rationally accounts for material nonlinearities, flexural tensile bond failure mechanism, type of ties, cavity width, load eccentricity, slenderness ratio, P-delta, and moisture and temperature deformation effects. The simplicity of the analysis technique is illustrated by instituting the procedure into a spreadsheet application. Complete load-deflection curves generated for some test walls compared well with the experimental data. The analysis method is accurate and extendable in predicting the ultimate load and the load-deflection relationships of masonry walls.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 127 • Issue 9 • September 2001
Pages: 1101 - 1108
History
Received: Aug 18, 1998
Published online: Sep 1, 2001
Published in print: Sep 2001
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