Application of Brillouin Scattering-Based Distributed Optical Fiber Strain Sensor to Actual Concrete Piles(Special Issue on Optical Fibers and Devices)

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概要

• 論文の詳細を見る

• We applied a Brillouin-OTDR, which is a distributed optical fiber strain sensor, to two actual concrete piles. The piles were made for use as highway foundations by on-site-pouring at construction sites and underwent load testing to ensure that their characteristics satisfied the required levels. Compressive strain caused by the load exerted on the piles was measured to an accuracy of 0.01% and a spatial resolution of 1 m. This measurement was obtained by embedding a strain-sensing optical fiber in the piles during construction. The results showed that there was good agreement between the measured strain and both the theoretical values and the values obtained with a conventional strain gauge based on electric resistance. Furthermore, the obtained strain distribution reflected the effects of friction between the pile surface and the ground. These results demonstrate the effectiveness of the Brillouin-OTDR for this kind of testing and also as a means of obtaining detailed data on the strain in concrete piles.

• 社団法人電子情報通信学会の論文
• 2002-04-01

著者

• OHNO Hiroshige

  NTT Access Network Service Systems Laboratories

• NARUSE Hiroshi

  NTT Access Network Service Systems Laboratories

• Ohno Hiroshige

  Ntt Access Network Service Systems Laboratories Ntt Corporation

• Kurashima T

  Nhk Tokyo Jpn

• Naruse H

  The Authors Arc With Ntt Access Network Service Systems Laboratories Ntt Corporation

• KURASHIMA Toshio

  NTT Access Network Service Systems Laboratories, NTT Corporation

• NOBIKI Atsushi

  Marketing Headquarter V, NTT-ME Corporation

• UCHIYAMA Yasuomi

  Chiba branch office, East NTT Corporation

• KUSAKABE Yuki

  Civil Engineering Research Institute of Hokkaido

• Nobiki Atsushi

  Marketing Headquarter V Ntt-me Corporation

• Kurashima Toshio

  Ntt Access Network Service Systems Laboratories Ntt Corporation

• NARUSE Hiroshi

  Access Network Service Systems Laboratories, NTT

• Naruse H

  Access Network Service Systems Laboratories Ntt

• Uchiyama Yasuomi

  Chiba Branch Office East Ntt Corporation

関連論文

• Brillouin Optical-Fiber Time Domain Reflectometry (Special Issue on Optical Fiber Cables and Related Technologies)
• Damage Detection for International America's Cup Class Yachts Using a Fiber Optic Distributed Strain Sensor
• Spatial Resolution Enhancement of Distributed Strain Measurement Using BOTDR by Partially Gluing Optical Fiber
• Concrete Pipe Strain Measurement Using Optical Fiber Sensor (Special Issue on Optical Fiber Sensors)
• Bending-Loss Insensitive Fiber with Hole-Assisted Structure
• Health monitoring of large composite structures by using fiber optic distributed strain sensors : Experiences at America's Cup 2000
• Application of Brillouin Scattering-Based Distributed Optical Fiber Strain Sensor to Actual Concrete Piles(Special Issue on Optical Fibers and Devices)
• River Levee Change Detection Using Distributed Fiber Optic Strain Sensor (Special Issue on Optical Fiber Sensors)
• Deformation of the Brillouin Gain Spectrum Caused by Parabolic Strain Distribution and Resulting Measurement Error in BOTDR Strain Measurement System(Optoelectronics)
• Optimum Temporal Pulse Shape of Launched Light for Optical Time Domain Reflectometry Type Sensors Using Brillouin Backscattering
• WDM transmission in 1.0.MU.m band over PCF using supercontinuum source
• 1.0.MU.m band supercontinuum light as WDM pulse source generated by using photonic crystal fibers

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