Michele Godio and Katrin Beyer
Michele Godio, Postdoctoral researcher, Earthquake Engineering and Structural Dynamics Laboratory (EESD), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), EPFL ENAC IIC EESD, GC B2 495, Station 18, CH-1015 Lausanne, Switzerland, michele.godio@epfl.ch
Katrin Beyer, Associate Professor, Earthquake Engineering and Structural Dynamics Laboratory (EESD), School of Architecture, Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), EPFL ENAC IIC EESD, GC B2 495, Station 18, CH-1015 Lausanne, Switzerland, katrin.beyer@epfl.ch
ABSTRACT
The assessment of the out-of-plane stability of unreinforced masonry walls is a key element in the seismic assessment of existing buildings. This paper investigates the validity and accuracy of a displacement-based approach for out-of-plane loaded unreinforced masonry walls against the results of numerical simulations. A discrete element model of a vertically-spanning masonry wall that is able to represent the peak strength, joint crack-initiation up to the complete joint detachment and rocking of the wall is first validated and next benchmarked against several configurations. Results from static pushover analyses are presented in view of the displacement-based assessment procedure. The displacement-based procedure is next tested against non-linear time-history dynamic analyses. Its applicability to different wall configurations is discussed.
147
