A. TRAD

Assistant Professor, Department of Civil Engineering, Beirut Arab University, Beirut, Lebanon  a.trad@bau.edu.lb

ABSTRACT: In order to assess the structural behaviour and to evaluate the seismic vulnerability of old masonry structures located in Lebanon, a historical masonry mosque was analysed under earthquake loading. A numerical model using the finite element method associated with Abaqus software was developed on the basis of previously published experimental studies. It was concluded that the numerical model can predict maximum stresses with reasonable accuracy, when compared to test results from a full-scale wall model. This analysis shows that the stresses generated in the joints between the blocks exceed the ultimate shear stress of the mortar, resulting in cracks in the joints. The choice of an adequate structural rehabilitation method was limited because the mosque is of archaeological importance and its original appearance could not be modified. Therefore, a seismic retrofit solution using internal or external post tensioned tendons was recommended.

KEYWORDS: Natural Stone, Lime mortar, Earthquake, Rehabilitation, Post-Tension.