TITLE

Lateral strength force of URM structures based on a constitutive model for interface element

AUTHOR(S)
Akhaveissy, A.H.
PUB. DATE
December 2011
SOURCE
Latin American Journal of Solids & Structures;Dec2011, Vol. 8 Issue 4, p445
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This paper presents the numerical implementation of a new proposed interface model for modeling the behavior of mortar joints in masonry walls. Its theoretical framework is fully based on the plasticity theory. The Von Mises criterion is used to simulate the behavior of brick and stone units. The interface laws for contact elements are formulated to simulate the softening behavior of mortar joints under tensile stress; a normal linear cap model is also used to limit compressive stress. The numerical predictions based on the proposed model for the behavior of interface elements correlate very highly with test data. A new explicit formula based on results of proposed interface model is also presented to estimate the strength of unreinforced masonry structures. The closed form solution predicts the ultimate lateral load of unreinforced masonry walls less error percentage than ATC and FEMA-307. Consequently, the proposed closed form solution can be used satisfactorily to analyze unreinforced masonry structures.
ACCESSION #
73470962

 

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