Three dimensional visualization of dynamic behavior of bridge deck using multisite simultaneous measurement system and its demonstration at pedestrian bridge

• Kawahara Masato

  愛媛大学大学院　理工学研究科生産環境工学専攻

• Nakahata Kazuyuki

  愛媛大学大学院　理工学研究科生産環境工学専攻

• Ohga Mitao

  愛媛大学大学院　理工学研究科生産環境工学専攻

Bibliographic Information

Other Title

• 多点同時計測による橋梁床板の動的挙動の3次元可視化と歩道橋における実験的検証

Abstract

Using a MEMS sensor network, we develop a three dimensional visualization system of dynamic behavior for a bridge deck. In our system, time series of acceleration data measured simultaneously at multisite are transferred to a laptop computer at a base-station with the wireless data connection, and then converted to displacement data by a numerical integral method. From the visualization results, the characteristic vibration modes including bending and torsional higher modes can be identified by applying digital filters of narrow bands. Here, the data measurement for the deck of a pedestrian bridge is conducted, and some characteristic vibration modes are extracted from the visualization results. The vibration modes obtained from the experiment show good agreements with numerical results obtained by a finite element method based on the Lanczos method.

Journal

• Journal of Structural Engineering, A

  Journal of Structural Engineering, A 59A (0), 1170-1178, 2013

  Japan Society of Civil Engineers

Keywords

• 3-D visualization, dynamic behavior
• bridge deck
• multisite simultaneous data measurement
• MEMS acceleration sensor
• higher modes of natural vibration

Details

• CRID: 1390282680260203264
• NII Article ID: 130005438814
• DOI: 10.11532/structcivil.59a.1170
• ISSN: 1881820X
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed