Title: Three-dimensional micromodel of clay block masonry wall

Authors: Davorin Penava; Filip Anić; Domagoj Trajber; Mirko Vig; Vladimir Sigmund; Ivica Kožar

Addresses: Faculty of Civil Engineering Osijek, Josip Juraj Strossmayer University of Osijek, Kralja Petra Svačića 1h, Drinska 16a, HR-31000 Osijek, Croatia ' Faculty of Civil Engineering Osijek, Josip Juraj Strossmayer University of Osijek, Kralja Petra Svačića 1h, Drinska 16a, HR-31000 Osijek, Croatia ' Faculty of Civil Engineering Osijek, Josip Juraj Strossmayer University of Osijek, Kralja Petra Svačića 1h, Drinska 16a, HR-31000 Osijek, Croatia ' Faculty of Civil Engineering Osijek, Josip Juraj Strossmayer University of Osijek, Kralja Petra Svačića 1h, Drinska 16a, HR-31000 Osijek, Croatia ' Faculty of Civil Engineering Osijek, Josip Juraj Strossmayer University of Osijek, Kralja Petra Svačića 1h, Crkvena 21, HR-31000 Osijek, Croatia ' Faculty of Civil Engineering, University of Rijeka, Radmile Matejčić 53, HR-51000 Rijeka, Croatia

Abstract: In designing and implementing earthquake resistance for clay block masonry infill integrated into a structural frame, with or without openings, the infill wall should be taken into account. Presumably, simplified models, acceptable for practical use, could be applied for that purpose. However, the anisotropy of clay block masonry units, masonry mortar joints, and unit contact properties as well as the high variance of material properties limit their ability to describe the actual earthquake resistance of clay block masonry. In this work, we consider a three-dimensional micromodel of a clay block masonry wall, with the inclusion of masonry unit anisotropy and masonry mortar joint and unit contact properties. To avoid the excessive calibration procedure of the wall micromodel, the wall constituents were calibrated separately beforehand, which resulted in a high correlation of computational and experimental results without further need for calibration. Using a calibrated micromodel, the influence of variance in material properties on the wall's resistance was investigated. The influence was showed not to be negligible, which may significantly affect the presumed behaviour of the whole structure.

Keywords: calibration; clay block masonry walls; sensitivity analysis; 3D micromodelling; earthquake resistance; earthquakes; infill walls; mortar joints; unit contact properties; wall modelling; material properties; seismic behaviour.

DOI: 10.1504/IJMRI.2016.081270

International Journal of Masonry Research and Innovation, 2016 Vol.1 No.4, pp.282 - 305

Received: 14 Dec 2015
Accepted: 03 Jul 2016

Published online: 01 Jan 2017 *

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