Health monitoring system for a tall building with Fiber Bragg grating sensors

D. S. Li; H. N. Li; L. Ren; D. S. Guo; G. B. Song

doi:10.1117/12.816092

30 March 2009 Health monitoring system for a tall building with Fiber Bragg grating sensors

D. S. Li, H. N. Li, L. Ren, D. S. Guo, G. B. Song

Proceedings Volume 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009; 729249 (2009) https://doi.org/10.1117/12.816092
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

Fiber Bragg grating (FBG) sensors demonstrate great potentials for structural health monitoring of civil structures to ensure their structural integrity, durability and reliability. The advantages of applying fiber optic sensors to a tall building include their immunity of electromagnetic interference and multiplexing ability to transfer optical signals over a long distance. In the work, FBG sensors, including strain and temperature sensors, are applied to the construction monitoring of an 18-floor tall building starting from its construction date. The main purposes of the project are: 1) monitoring the temperature evolution history within the concrete during the pouring process; 2) measuring the variations of the main column strains on the underground floor while upper 18 floors were subsequently added on; and 3) monitoring the relative displacements between two foundation blocks. The FBG sensors have been installed and interrogated continuously for more than five months. Monitoring results of temperature and strains during the period are presented in the paper. Furthermore, the lag behavior between the concrete temperature and its surrounding air temperature is investigated.

Citation Download Citation

D. S. Li, H. N. Li, L. Ren, D. S. Guo, and G. B. Song "Health monitoring system for a tall building with Fiber Bragg grating sensors", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 729249 (30 March 2009); https://doi.org/10.1117/12.816092

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KEYWORDS

Fiber Bragg gratings

Sensors

Temperature metrology

Temperature sensors

Environmental sensing

Calibration

Structural health monitoring

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