Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (3): 94-98.

• Architecture & Civil Engineering • Previous Articles     Next Articles

Development of Digital Monitoring System of Strong Motion for Long-Span Bridges

He Zhi-yong  Lan Yan-liang  Dai Shao-ping     

  1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-10-07 Revised:2008-11-10 Online:2009-03-25 Published:2009-03-25
  • Contact: 贺志勇（1964-），男，博士，副教授，主要从事桥隧健康监测系统研究． E-mail:zhyhe@scut．edu．cn
  • About author:贺志勇（1964-），男，博士，副教授，主要从事桥隧健康监测系统研究
  • Supported by:

    国家自然科学基金资助项目（10472033）

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Abstract:

Both the observation of strong motion of bridges and the vibration monitoring of bridge structures help to reach the final goal of reducing the earthquake disaster. In this paper, based on the earthquake response analyses of cable bridges, the scheme of a digital strong-motion monitoring system for long-span bridges is investigated in terms of the choice of monitoring sections, the main technical indexes, the early-warning system of strong motion, the data processing of observed strong-motion data and the submission of reports, etc. The proposed system not only offers accurate and quantitative ground acceleration data for post-earthquake relief and structural seismic design codes but also provides an effective means for avoiding the earthquake disaster, revealing the working state and removing the hidden danger of bridges.

Key words: long-span bridge, strong motion, digital monitoring system, diagnosis