Experimental and Numerical study of Confined Masonry Wall under Cyclic Loading

Authors: Miha Tomazevic and Iztok Klemenc

Reference: Earthquake Engg.and Structural Dynamics,Wiley Interscience, March 1997

Summary:

Experimental & Numerial simulation were carried out to investigate the response of CM walls on three speciemens (size 870x1330mm) each of red brick, concrete block and concrete wall with horizontal reinforcement.  The models were excited cyclically according to certain dispacement history. Lateral force withstand by these spcimens were 5.6kN,4.29kN and 1.92kN. First significant cracks is further studied numerically to analyse the CM wall.

Conclusion and future Scope:

Based on the study, lateral strength, load-displacement curves, stiffness degradation, and energy dissipation capacity were evaluated.  The stiffness degradation and energy dissipation capacity is highest in RB, followed by CW and CWHR.  Stress-strain relationship alongwith guidance for analysis of CM walls like modulus of elasticity, masonry yield strength (thereby yield strain), limiting strain, ultimate strain, stress-strain curve etc., were outlined.