Implementation of a vibration-based bridge health monitoring system on scour issue

Tzu-Kang Lin, Yen-Po Wang, Ming Chih Huang*, Chen An Tsai

*Corresponding author for this work

研究成果: Conference contribution同行評審

4 引文 斯高帕斯(Scopus)

摘要

Bridges are prone to suffer from multiple hazards such as earthquake, wind, or floods for the special structural characteristic. To guarantee the stability of bridge structure, how to precisely evaluate the scour depth of bridge foundation has become an important issue recently as most of the unexpected damage or collapse of bridges are caused by hydraulic issue. In this paper, a vibration-based bridge health monitoring system considering the response of superstructure only is proposed to rapidly evaluate the embedded depth of bridge column. To clarify the complex fluid-solid coupling phenomenon, the effect of embedded depth and water level was first verified through a series of static experiment. A finite element model with confinement simulated by soil spring was then established to illustrate the relationship between the fundamental frequency and the embedded depth. With the proposed algorithm, the health condition of the bridge can be inferred by processing the ambient vibration response of the superstructure. To implement the proposed algorithm, a SHM prototype system monitoring the environmental factors such as temperature, water level, and inclination was developed to support on-line processing. The performance of the proposed system was verified by a series of dynamic bridge scour experiment conducted in laboratory flume and compared with the reading from water-proof camera. The result has shown that by using the proposed vibration-based bridge health monitoring system, the embedded depth of bridge column during complex scour process can be reliably reflected.

原文English
主出版物標題Innovation for Applied Science and Technology
頁面1351-1357
頁數7
DOIs
出版狀態Published - 20 二月 2013
事件2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012 - Kaohsiung, Taiwan
持續時間: 2 十一月 20126 十一月 2012

出版系列

名字Applied Mechanics and Materials
284-287
ISSN(列印)1660-9336
ISSN(電子)1662-7482

Conference

Conference2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012
國家Taiwan
城市Kaohsiung
期間2/11/126/11/12

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