Flexural Behavior of Reinforced Masonry Walls and Beams

by Tuneo Okada, Univ of Tokyo, Tokyo, Japan,
Hisahiro Hiraishi, Univ of Tokyo, Tokyo, Japan,
Takashi Kaminosono, Univ of Tokyo, Tokyo, Japan,
Masaomi Teshigawara, Univ of Tokyo, Tokyo, Japan,

Abstract: Many reinforced masonry walls and beams were tested as a part of the U. S. -Japan cooperative research program on masonry building structures. Six concrete block and two clay brick masonry walls, one reinforced concrete wall, and four concrete block masonry beams were tested in order to evaluate their deformation capacity after yielding by flexure. Major findings are that: increases in amount of shear reinforcement and spiral reinforcement were effective on deformation capacity; existence of splices did not affect badly on deformation capacity; and ultimate shear stress increased, but deterioration of strength at large deformation became large by decrease in shear span ratio of beam.

Subject Headings: Reinforced concrete | Masonry | Shear stress | Walls | Concrete blocks | Concrete beams | Shear strength

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