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Sensors 2013, 13(3), 3739-3752; doi:10.3390/s130303739
Article

Design and Application of a Field Sensing System for Ground Anchors in Slopes

1
, 1
, 2
 and 1,*
Received: 16 February 2013; in revised form: 13 March 2013 / Accepted: 14 March 2013 / Published: 18 March 2013
(This article belongs to the Section Sensor Networks)
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Abstract: In a ground anchor system, cables or tendons connected to a bearing plate are used for stabilization of slopes. Then, the stability of a slope is dependent on maintaining the tension levels in the cables. So far, no research on a strain-based field sensing system for ground anchors has been reported. Therefore, in this study, a practical monitoring system for long-term sensing of tension levels in tendons for anchor-reinforced slopes is proposed. The system for anchor-reinforced slopes is composed of: (1) load cells based on vibrating wire strain gauges (VWSGs), (2) wireless sensor nodes which receive and process the signals from load cells and then transmit the result to a master node through local area communication, (3) master nodes which transmit the data sent from sensor nodes to the server through mobile communication, and (4) a server located at the base station. The system was applied to field sensing of ground anchors in the 62 m-long and 26 m-high slope at the side of the highway. Based on the long-term monitoring, the safety of the anchor-reinforced slope can be secured by the timely applications of re-tensioning processes in tendons.
Keywords: strain sensing; wireless sensor node; residual tensile force; ground anchor strain sensing; wireless sensor node; residual tensile force; ground anchor
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.

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MDPI and ACS Style

Choi, S.W.; Lee, J.; Kim, J.M.; Park, H.S. Design and Application of a Field Sensing System for Ground Anchors in Slopes. Sensors 2013, 13, 3739-3752.

AMA Style

Choi SW, Lee J, Kim JM, Park HS. Design and Application of a Field Sensing System for Ground Anchors in Slopes. Sensors. 2013; 13(3):3739-3752.

Chicago/Turabian Style

Choi, Se W.; Lee, Jihoon; Kim, Jong M.; Park, Hyo S. 2013. "Design and Application of a Field Sensing System for Ground Anchors in Slopes." Sensors 13, no. 3: 3739-3752.


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