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Sensors 2017, 17(3), 597; doi:10.3390/s17030597

Application of FBG Sensing Technology in Stability Analysis of Geogrid-Reinforced Slope

College of Transportation Science & Engineering, Nanjing Tech University, Nanjing 210009, China
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Received: 15 December 2016 / Revised: 18 February 2017 / Accepted: 2 March 2017 / Published: 15 March 2017
(This article belongs to the Special Issue Recent Advances in Fiber Bragg Grating Sensing)
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Abstract

By installing FBG sensors on the geogrids, smart geogrids can both reinforce and monitor the stability for geogrid-reinforced slopes. In this paper, a geogrid-reinforced sand slope model test is conducted in the laboratory and fiber Bragg grating (FBG) sensing technology is used to measure the strain distribution of the geogrid. Based on the model test, the performance of the reinforced soil slope is simulated by finite element software Midas-GTS, and the stability of the reinforced soil slope is analyzed by strength reduction method. The relationship between the geogrid strain and the factor of safety is set up. The results indicate that the measured strain and calculated results agree very well. The geogrid strain measured by FBG sensor can be applied to evaluate the stability of geogrid-reinforced sand slopes. View Full-Text
Keywords: FBG; geogrid; slope; numerical modeling; stability analysis FBG; geogrid; slope; numerical modeling; stability analysis
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Sun, Y.; Xu, H.; Gu, P.; Hu, W. Application of FBG Sensing Technology in Stability Analysis of Geogrid-Reinforced Slope. Sensors 2017, 17, 597.

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