Experimental, numerical and analytical investigations of masonry corners: Influence of the horizontal pseudo-static load orientation

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Experimental, numerical and analytical investigations of masonry corners: Influence of the horizontal pseudo-static load orientation
Journal
Construction and Building Materials
Title
Experimental, numerical and analytical investigations of masonry corners: Influence of the horizontal pseudo-static load orientation
Authors
C. Colombo, N. Savalle, A. Mehrotra, M. F. Funari, P. B. Lourenço
Date
July 10, 2022
Highlights
  • The influence of the seismic action direction in masonry connections is investigated experimentally for the first time through tilting table tests.
  • The paper presents a full characterisation process of dry-joint masonry structures, providing all the relevant parameters that affect the unit and joint behaviour.
  • A new integrated limit analysis tool is presented, which accounts for rocking sliding or flexural mechanism simultaneously.
  • The limit analysis results are supported by the experimental results and a detailed DEM model.
ABSTRACT

The present work aims to expand the knowledge of the behaviour of masonry corners, which are capital to obtain an integral seismic response in masonry buildings. In particular, the influence of the seismic load orientation (from π/4 to π/2) is investigated experimentally, numerically and analytically. Both units and interfaces have been subjected to a material characterisation process, following which pseudo-static 1:4 scaled experiments on a tilting table have been conducted on a symmetric dry-joint masonry corner. The experimental results have also been simulated using a discrete element model. Finally, a new analytical limit analysis model has been developed, which considers both experimental and numerical observations and accounts for rocking-sliding and flexural mechanisms. In general, a good agreement is found between the three approaches, both in terms of collapse mechanism and load multiplier.