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Proceedings Paper

Field investigation of a vibration monitoring wireless sensor network on a huge cantilever structure
Author(s): H. F. Zhou; J. L. Liu; Y. Q. Ni; D. P. Zhu
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Paper Abstract

To advance wireless structural monitoring systems mature into a reliable substitute to wired structural monitoring systems, efforts should be paid to investigate their in-field performance on real civil structures, especially complex mega structures. This study carries out an investigation into a vibration monitoring wireless sensor network (WSN) for modal identification of a huge cantilever structure. The testbed under study is the New Headquarters of Shenzhen Stock Exchange (NHSSE). One outstanding feature of NHSSE is its huge floating platform, which is a steel truss structure with an overall plan dimension of 98x162 m and a total height of 24 m. It overhangs from the main tower 36 m along the long axis and 22 m along the short axis at a height of 36 m above the ground, making it the largest cantilever structure in the world. Recognizing the uniqueness of this floating platform, the performance of the WSN for ambient vibration measurement of this structure is examined. A preliminary two-point simultaneous acceleration measurement using the WSN is reported in this paper. The preliminary study demonstrates that the WSN is capable of measuring the ambient vibration and identifying the modal properties of a huge cantilever structure.

Paper Details

Date Published: 13 April 2011
PDF: 10 pages
Proc. SPIE 7981, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011, 79810H (13 April 2011); doi: 10.1117/12.881748
Show Author Affiliations
H. F. Zhou, PolyU Technology & Consultancy Co., Ltd. (Hong Kong, China)
J. L. Liu, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Y. Q. Ni, The Hong Kong Polytechnic Univ. (Hong Kong, China)
D. P. Zhu, Georgia Institute of Technology (United States)


Published in SPIE Proceedings Vol. 7981:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2011
Masayoshi Tomizuka, Editor(s)

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