Abstract
This research aims the clarification of the shear mechanism of reinforced concrete beams by means of experimental works with the image processing and analytical methods. With a combination of Modified compression field theory and Fiber model nonlinear analysis program for reinforced concrete beams, experimental results are examined. Focusing on the interaction of a bending moment and shearing force, influence of bending moment is especially taken into consideration to MCFT as the equivalent axial force calculated from fiber strains. Extraction of flexural components and shear components are by means of measurement of the noncontact displacement and image processing. As a result, the displacement by the direct measurements and that by the image processing agree with each other up to ultimate load.
