Visualization of a deformed structure by the Photogarmmetry

Abstract

Photogrammetry is the technique to measure the form of 3-dimensional objects by analyze the pictures of reflective targets on the objests. Conventional measures need three divices to measure the 3-D deformations, however Photogrammetry can measure the deformations by one device. We tried to apply this technique for measuring 3-D deformation of a concrete structure under the cyclic load. The expected failure mode is due to buckling of enclosed reinforcements. 3-D deformations are necessary to clarify the behavior of specimen. As the results, it was possible that this technique has an accuracy and can visualize the process of deformation.