構造物調査・診断(3)／振動

[V-666] Study on development of multi-point displacement and vibration measurement system of bridge using corner cube

〇Koichi Miyahama¹, Hiroshi Matsuda¹, Aoi Koga¹, Akira Demizu¹, Idaku Ishii², Kohei Shimazaki² (1.Nagasaki University, 2.Hiroshima University)

Keywords:displacement measurement, high frame rate, natural frequency

Though the contact type measuring instrument has been generally used until now, the time and cost become a problem, because the scaffold is required in the work in the high place. In recent years, the measurement method using camera and laser as a non-contact type measurement increases, but the short time measurement is difficult, because there are many methods for only a part of bridge.The objective of the bridge measurement system developed in this study is to enable simultaneous measurement of multiple points by a single-field camera, and to realize measurement in a shorter time and at a lower cost compared with the above measurement method.