EXPERIMENTAL STUDY ON SHEAR STRENGTH OF REINFORCED CONCRETE WALL-TYPE PIER

It is known that a wall-type reinforced concrete pier generally has a small shear span ratio across its bridge axis; in this case, it is regarded as a deep beam. Previous studies have been proposing several formulae to estimate the shear strength of a deep beam, but the effect of cross-sectional shape and reinforcing bar arrangement specific to a wall-type pier has not been sufficiently examined. Therefore, we conducted various loading tests of reinforced concrete, focusing on the direction across the bridge axis of a wall-type pier. This paper reports the findings obtained from the loading tests, especially the process of cracking, the strain of reinforcing bar and concrete, load-displacement relationship, and shear strength.