Abstract
The present paper deals with the evaluation formula for the punching shear load-carrying capacity of RC slabs in the highway bridge by applying the ultimate limit state design method. The testing specimens of three types were prepared on the basis of the Specifications for Highway Bridges of Japan. The theoretical model and the load-carrying capacity equation for the punching shear have been determined due to the failure modes and the strains detected on the rebars ; so, the estimated values by the proposed equation considering the ultimate limit state design method agreed well to the experimental results. Thus, the design live load can be obtained by application of the material and member factors to the estimated punching shear load-carrying capacity.
