Experimental Study of 3D Confined Masonry Building under Cyclic Loading

Document Type : Research articles

Authors

1 Professor, Faculty of Engineering at Shoubra, Benha University.

2 Professor, Faculty of Engineering at Shoubra, Benha University

3 bAssistant Professor, Faculty of Engineering at Shoubra, Benha University.

4 Assistant Lecturer, Faculty of Engineering at Shoubra, Benha University

Abstract

Since the dawn of human civilization, masonry has been used to construct all types of buildings, bridges, roadways and other engineering works. Confined masonry (CM) is considered one of the popular forms of low-cost and low-rise construction throughout the world. Confined masonry consists of non-reinforced masonry walls surrounded by concrete tie-columns, in the vertical direction, and tie-beams, in the horizontal direction. In some countries confined masonry walls may include joint reinforcement. The behavior of constrained masonry structures under cyclic lateral loads was investigated in this experimental research. The two-story half-scale model was made using local materials and standards in consideration. With increasing displacement, lateral cyclic loads were applied to the model. Crack pattern, failure mechanism, lateral capacity, energy dissipation, ductility, and overall structural performance were all evaluated. Out of plane walls provided additional restrictions for wall movements and increased structural performance, while masonry infill walls provided significant strength and ductility. The findings show that confined masonry structures constructed to the standard will withstand the design lateral loads successfully. The case study for the tested assembly was verified using finite element model verification using experimental results. The developed model is capable of accurately capturing the maximum load and its related deformation of the tested structure, according to the results of the finite element analysis. For fracture patterns and failure mechanisms, the suggested model agrees well with the results of laboratory tests.

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