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Method and Application of Spatial Positioning for Valid Temperature-measuring Optical Fibers in Concrete Dams

  • Structural Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

Spatial positioning of Valid Temperature-measuring Optical Fiber (VTOF) is of great significance for accurately grasping the real temperature distribution of a concrete dam. However, there is barely an effective way to accurately locate the measuring points of optical fiber in concrete dams. A comprehensive data symmetry analysis technique is presented for determining the optimal spatial positioning of valid temperature-measuring optical fibers (VTOFs) in concrete dams. This approach includes a mathematical model to confirm the center of symmetry in monitoring data, which is required to reconstruct the real spatial temperature distribution. This process can identify VTOF locations and verify the reliability of temperature predictions. Experimental validation was conducted using findings from research on a new mathematical model, site measurements from a concrete dam, and corresponding data from distributed optical fibers. These results were successfully applied to the construction of the Baihetan dam; the concrete temperature from 405 pouring blocks in 5 typical dam monoliths was accurately monitored, and the temperature-measuring points of VTOFs were more than 24711. Meanwhile, the optical fiber temperature measurement and temperature field analysis system of Baihetan dam located in southwest China was developed based on accurately acquired temperature measurement data, which provides data basis and engineering application platform support for temperature evolution and temperature field analysis and precise temperature control management of pouring blocks.

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Acknowledgments

This research work was supported by the Youth Fund project of National Natural Science Foundation of China (No. 52109157). We thank LetPub (http://www.letpub.com) for its linguistic assistance during the preparation of this manuscript. The authors thank the reviewers and editors for useful comments and suggestions that assisted to improve the paper.

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Correspondence to Chunju Zhao.

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Zhou, H., Zhao, C., Liang, Z. et al. Method and Application of Spatial Positioning for Valid Temperature-measuring Optical Fibers in Concrete Dams. KSCE J Civ Eng 27, 3484–3500 (2023). https://doi.org/10.1007/s12205-023-2336-6

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  • DOI: https://doi.org/10.1007/s12205-023-2336-6

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