THREE-DIMENSIONAL VISUALIZATION SYSTEM OF BRIDGE DYNAMIC BEHAVIOR WITH WIRELESS MEMS SENSORS

Tatsunao Takamoto1, Masato Kawahara2, Kazuyuki Nakahata3 and Mitao Ohga4

1) Doctor course student, Dept. of Civil & Environmental Engineering, Ehime University, Matsuyama, Ehime, Japan.
2) Master course student, Dept. of Civil & Environmental Engineering, Ehime University, Matsuyama, Ehime, Japan.
3) Dr. Eng., Associate Professor, Dept. of Civil & Environmental Engineering, Ehime University, Japan.
4) Dr. Eng., Professor, Dept. of Civil & Environmental Engineering, Ehime University, Japan.

Abstract: To better understand the soundness of a bridge from vibration data, a three-dimensional visualization system of a bridge's condition has been developed using acceleration sensors located at multiple points on the bridge. Our system is portable and inexpensive because it involves the use of wireless data connection and the micro electromechanical system technology. In this research, the feasibility of the system is checked on ten pedestrian bridges in Matsuyama city. We can identify high vibration modes of bending, twisting, and translating at the same time by adding an impact shock.

Keywords: MEMS, Wireless measurement, Vibration, Three-dimensional visualization, Pedestrian bridge, Natural frequency mode

Bibliographical Reference:
Tatsunao Takamoto, Masato Kawahara, Kazuyuki Nakahata, and Mitao Ohga. “THREE-DIMENSIONAL VISUALIZATION SYSTEM OF BRIDGE DYNAMIC BEHAVIOR WITH WIRELESS MEMS SENSORS.” In Proceedings of International Conference on Civil and Building Engineering Informatics (ICCBEI 2015), 61. Tokyo, Japan, 2015.

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