部材レベルの加速度二乗平均値を用いた簡易構造物診断法の検討

抄録

Infrastructure built in 1950s has exceeded its service life and has become a social problem because of its deterioration. To solve the problem, it is important to expand inspection technology and to make efficient repair plans for infrastructure such as water pipes and bridges. Especially research and development of inspection technology related to digitization using ICT is expected. In a previous study, we conducted experiments using a IoT sensor to determine the mean square value of acceleration for rings which have different pipe thicknesses and observed that the mean square value of acceleration changes as the pipe thickness changed. Thus, we will attempt to expand the area of application of the inspection method using the mean square value of acceleration for structural components such as beams and others. In this study, we conducted a formulation of the mean square value of acceleration for several structural components and discussed its physical importance in terms of sensing. As a result, it was confirmed that the spatial distribution of the mean square value of acceleration for simple support beams converges to a certain shape as the upper frequency limit increases. It was also confirmed that the magnitude of the absolute value of mean square value of acceleration is greatly affected by the maximum mode order.