2023 Volume 79 Issue 7 Article ID: 22-00348
It is important to understand vibration characteristics of bridges for estimation of the stiffness of the entire bridge. Generally equipments for vibration measurement are so expensive that everyone can not easily carry out the measurement using the equipments. In this study, we try vibration measurement with enough accuracy using tablet devices with accelerometer for a timber pedestrian bridge. For the most dominant vertically-antisymmetrical mode, error of measured value by the tablet devices to the numerically calculated value is about −4.0%. It shows the utility of vibration measurement using tablet devices with accelerometer. Besides, we discuss vibration characteristics for the measured timber pedestrian bridge, comparing values of natural frequency and of damping constant with the values obtained by the approximate equation for steel/concrete bridges.
