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2013-01-28 - Colloque/Article dans les actes avec comité de lecture - Anglais - 1 page(s)

Bultot Elodie , Degée Hervé, VanParys Laurent , "Experimental study of out-of-plane bending carried out on dry and stacked masonry walls" in Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics, Vienne, Autriche, 2013

  • Codes CREF : Stabilité des constructions [construction génie civil] (DI2120)
  • Instituts UMONS : Institut des Sciences et du Management des Risques (Risques)

Abstract(s) :

(Anglais) Experimental study of out-of-plane bending carried out on dry and stacked masonry walls. Elodie BULTOT, Hervé DEGEE, Laurent VAN PARYS Unreinforced masonry walls are acknowledged as highly vulnerable to out-of-plane loading. Depending to their boundary conditions, under transversal loads, they may be subjected to a combination of horizontal, vertical and diagonal bending that are likely to lead to collapse. This paper presents an experimental investigation carried out on masonry walls of about 1m² subjected to an out-of-plane loading. The specific lab device combines a gravity-based approach in order to apply an in-plane pre-compression (with or without eccentricity) with a jack-base approach for managing the out-of-plane loading (horizontal, vertical or diagonal capabilities). The objectives of this study are to highlight the modes of rupture, to quantify the bearing capacity under horizontal, vertical and diagonal bending in relationship with different parameters as the wall thickness and the pre-compression rate. This experimental research takes place in connection with the development of specific computational features that could eventually derive to an enrichment of related codes. Tests were conducted on dry and stacked masonry walls. Different pre-compression rate are applied and three types of bricks and two different sizes are used in order to experimentally outline the influence of key parameters. In the first part of the study, loads are statically applied, until the collapse of the walls. Tests were then carried out by applying pseudo-cyclical loadings in order to highlight the effect of the progressive damages appearing inside the bricks.