Design of Concrete Frames Infilled With Confined Masonry Walls

Abstract eng:
Based on recent experimental evidence, a design procedure of concrete frames infilled with masonry walls is proposed. The strength of the system is estimated as the sum of strength of the masonry walls and the strength of the frame. The strength of the masonry walls is estimated using Canadian code while the frame strength is equal to the force required for the bare frame to undergo a prescribed drift. The frame strength is calculated with an elastic analysis. Nonlinear behavior is taken into account through reduction of inertia for the columns. Using this procedure, estimations for cracking and maximum strengths are obtained. Experimental results show that the contribution of horizontal reinforcement to the strength of the system is dependent on the relative stiffness of wall and frame. Current estimations of strength do not consider that parameter leading to overestimation of strength when flexible frames are used.

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