Abstract
This study makes clear the way of calculation for the shear strength of an RC member with a large angle, which is used in Reinforced Concrete (RC) rigid-frame viaducts and box-culverts.
According to the current Specifications by the Japan Society of Civil Engineers, only one-thud of the horizontal part of the haunch is to be included as effective for calculating the strength. However, this way of calculation is not well-founded, and is felt to be unrealistic based on the authors' experience in railway constriction. In order to establish the actual shear strength, experiments were carried out by using forty-three RC member models with haunches that have various sizes and shapes.
From the results, a proposal was derived for the calculation of the shear strength of RC members with various effective depths.
