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Sensors 2018, 18(6), 1968; https://doi.org/10.3390/s18061968

Deformation Monitoring for Chinese Traditional Timber Buildings Using Fiber Bragg Grating Sensors

1
College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
2
College of Architecture, Fuzhou University, Fuzhou 350108, China
*
Author to whom correspondence should be addressed.
Received: 6 May 2018 / Revised: 12 June 2018 / Accepted: 14 June 2018 / Published: 19 June 2018
(This article belongs to the Special Issue Smart Sensors and Smart Structures)
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Abstract

The Fiber Bragg Grating (FBG) sensing technique is suitable for a wide variety of measurements, including temperature, pressure, acceleration, liquid level, etc., and has been applied to many bridges and buildings in the past two decades. The fact that the FBG technique can only monitor and measure strain data for most cases when it is used for deformation measurements impedes application of the FBG sensing technique in civil infrastructures. This paper proposes FBG sensing-based deformation monitoring methods that are applicable to monitoring beam deflection, column inclination angle and mortise-tenon joint dislocation for Chinese traditional timber structures. On the basis of improved conjugated beam theory and geometrical trigonometric function relationship, the relationships between the FBG sensing strain values and the deflection of beam, inclination angle of column, as well as the amount of dislocation of mortise-tenon joint are deducted for Chinese traditional buildings. A series of experiments were conducted to verify the applicability and effectiveness of the proposed deformation monitoring methods. The results show that a good agreement is obtained between the values given by the methods proposed in this paper and other methods. This implies that the proposed deformation monitoring methods are applicable and effective in the health monitoring of Chinese traditional timber structures. View Full-Text
Keywords: deformation monitoring; FBG sensing; mortise-tenon joint; inclination angle; amount of dislocation; semi-rigid joint; Chinese traditional timber buildings deformation monitoring; FBG sensing; mortise-tenon joint; inclination angle; amount of dislocation; semi-rigid joint; Chinese traditional timber buildings
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Li, N.-L.; Jiang, S.-F.; Wu, M.-H.; Shen, S.; Zhang, Y. Deformation Monitoring for Chinese Traditional Timber Buildings Using Fiber Bragg Grating Sensors. Sensors 2018, 18, 1968.

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