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Proceedings Paper

Vibration measurement of railway bridge with seismic low-frequency transducer based on signal reconstruction technique
Author(s): Yi Xie; Puchiang Yan; Hai-yun Zhang; Qian Yang; Duan Zhang; Zaitian Ke
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Paper Abstract

Aiming at the characteristic of bridge dynamic deflection signal, and the requirement for the frequency characteristics of measuring transducer, after reviewing several measuring methods, the authors put forward a convenient and effective method for measurement of bridge dynamic deflection with seismic low frequency vibration transducers. Signal recovery technique is adopted to compensate the output which is distorted because of the frequency characteristics of seismic transducer. Spectrum extrapolation technique for time-limited signal is employed to reconstruct some low frequency spectral lines which are contaminated seriously by low frequency noise. The work in this paper provides a new way for the measurement of bridge dynamic deflection, which lays the foundation for the measurement and research of bridge spatial vibration excited by a train passing by.

Paper Details

Date Published: 22 April 1996
PDF: 8 pages
Proc. SPIE 2719, Smart Structures and Materials 1996: Smart Systems for Bridges, Structures, and Highways, (22 April 1996); doi: 10.1117/12.238839
Show Author Affiliations
Yi Xie, Tsinghua Univ. (Singapore)
Puchiang Yan, Tsinghua Univ. (China)
Hai-yun Zhang, Tsinghua Univ. (China)
Qian Yang, Tsinghua Univ. (China)
Duan Zhang, Railway Engineering Research Institute (China)
Zaitian Ke, Railway Engineering Research Institute (China)

Published in SPIE Proceedings Vol. 2719:
Smart Structures and Materials 1996: Smart Systems for Bridges, Structures, and Highways
Larryl K. Matthews, Editor(s)

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