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Journal of Sensors
Volume 2015, Article ID 610473, 6 pages
http://dx.doi.org/10.1155/2015/610473
Research Article

Distributed Measurement of Temperature for PCC Energy Pile Using BOFDA

1Key Laboratory of Geomechanics and Embankment Engineering, Ministry of Education, Hohai University, Nanjing 210098, China
2Faculty of Petroleum and Mining Engineering, Suez University, Suez 34721, Egypt
3Engineering College, Jazan University, Jazan 45142, Saudi Arabia

Received 16 November 2014; Revised 15 December 2014; Accepted 16 January 2015

Academic Editor: Fei Dai

Copyright © 2015 Lei Gao et al. 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.

Abstract

PCC energy pile is a new technology for sustainable development of urban areas. Learning and understanding the temperature variation of PCC energy pile are very important to its development and application. In this study, the Brillouin optical frequency domain analysis (BOFDA) technology is firstly used to measure the temperature variation of PCC energy pile from a model test. The aim is to provide an optical fiber sensing method for monitoring the temperature distribution of PCC energy pile. When the temperatures of circulating water are 70°C, 60°C, 50°C, and 40°C, the result shows that the temperatures of PCC energy pile under different conditions are measured well by the optical fiber sensor. It will help to master the temperature distribution and thermomechanical characteristic of PCC energy pile. It can also provide the important scientific and theoretical basis for the design and application of PCC energy pile.