Sciences in Cold and Arid Regions ›› 2017, Vol. 9 ›› Issue (3): 192–196.doi: 10.3724/SP.J.1226.2017.00192

• ARTICLES • 上一篇    

Laboratory investigations of the thermal strain of frozen soils, using fiber-optic strain gauges based on Bragg gratings

Aleksey Marchenko1, Nicolai Vasiliev2, Artem Nesterov3, Yuri Kondrashov4, Nikolay Belyaev5   

  1. 1. Department of Arctic Technology, UNIS, P.O. Box 156, Longyearbyen, N-9171, Norway;
    2. The Laboratory of Static Research of Soils, JSC "Vedeneev VNIIG", 21, Gzhatskaya, St. Petersburg 195220, Russia;
    3. Peter the Great St. Petersburg Polytechnic University (SPbPU), 29, Politechnicheskaya, St. Petersburg 195251, Russia;
    4. The Laboratory of Static Research of Soils, JSC "Vedeneev VNIIG", 21, Gzhatskaya, St. Petersburg 195220, Russia;
    5. Peter the Great St. Petersburg Polytechnic University (SPbPU), 29, Politechnicheskaya, 195251 St. Petersburg, Russia
  • 收稿日期:2016-11-19 修回日期:2016-12-19 发布日期:2018-11-23
  • 通讯作者: Vasiliev Nicolai, Nicolai Vasiliev, Ph.D., head of the Static Research of Soils Laboratory, JSC "Vedeneev VNIIG", 21, Gzhatskaya, St. Petersburg 195220, Russia. E-mail: nicolaivasiliev@hotmail.com E-mail:nicolaivasiliev@hotmail.com

Laboratory investigations of the thermal strain of frozen soils, using fiber-optic strain gauges based on Bragg gratings

Aleksey Marchenko1, Nicolai Vasiliev2, Artem Nesterov3, Yuri Kondrashov4, Nikolay Belyaev5   

  1. 1. Department of Arctic Technology, UNIS, P.O. Box 156, Longyearbyen, N-9171, Norway;
    2. The Laboratory of Static Research of Soils, JSC "Vedeneev VNIIG", 21, Gzhatskaya, St. Petersburg 195220, Russia;
    3. Peter the Great St. Petersburg Polytechnic University (SPbPU), 29, Politechnicheskaya, St. Petersburg 195251, Russia;
    4. The Laboratory of Static Research of Soils, JSC "Vedeneev VNIIG", 21, Gzhatskaya, St. Petersburg 195220, Russia;
    5. Peter the Great St. Petersburg Polytechnic University (SPbPU), 29, Politechnicheskaya, 195251 St. Petersburg, Russia
  • Received:2016-11-19 Revised:2016-12-19 Published:2018-11-23
  • Contact: Vasiliev Nicolai, Nicolai Vasiliev, Ph.D., head of the Static Research of Soils Laboratory, JSC "Vedeneev VNIIG", 21, Gzhatskaya, St. Petersburg 195220, Russia. E-mail: nicolaivasiliev@hotmail.com E-mail:nicolaivasiliev@hotmail.com

摘要: Measurements of the thermal deformations of frozen soil samples were performed in the cold laboratory in temperature range from 0℃ to -12℃. Fiber Bragg Gratings strain and temperature sensors were used to measure the deformation and temperature inside the samples. A number of tests with the samples prepared from Kaolin and Cambrian clay saturated with fresh water, and prepared from fine and silt sand saturated with fresh or saline water, are performed. Thermal deformations of the samples are analyzed depending on the cyclic changes of their temperature.

关键词: thermal expansion, frozen soil, sand, clay, fiber-optic sensors, hysteresis

Abstract: Measurements of the thermal deformations of frozen soil samples were performed in the cold laboratory in temperature range from 0℃ to -12℃. Fiber Bragg Gratings strain and temperature sensors were used to measure the deformation and temperature inside the samples. A number of tests with the samples prepared from Kaolin and Cambrian clay saturated with fresh water, and prepared from fine and silt sand saturated with fresh or saline water, are performed. Thermal deformations of the samples are analyzed depending on the cyclic changes of their temperature.

Key words: thermal expansion, frozen soil, sand, clay, fiber-optic sensors, hysteresis

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