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Internal Force Response of a Pile in an Inhomogeneous Temperature Field

Author

Listed:
  • Dan Zhang

    (School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
    Nanjing University (Suzhou) High-Tech Institute, Suzhou 215123, China)

  • Yian Wang

    (School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China)

  • Jian Cheng

    (School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China)

Abstract

An inhomogeneous temperature field was built in an experimental model of sand with an embedded pile. The temperature of the soil, as well as the temperature and strain on opposite sides of the pile were investigated in the process of temperature balance. The effect of the inhomogeneous temperature field on the internal force of the pile was analyzed. The experimental results show that the inhomogeneous temperature field will cause a bending deformation in the pile body according to the FBG (fiber Bragg grating) strain sensors. The distribution of the bending moment along the length of the pile is related to the temperature difference. The maximum bending moments reached −25.7 N·m when the temperature difference was about 1.3 °C. Therefore, the influence of the inhomogeneous temperature field o· the internal force of the foundation pile should be taken into account in the applications of a ground source heat pump system.

Suggested Citation

  • Dan Zhang & Yian Wang & Jian Cheng, 2017. "Internal Force Response of a Pile in an Inhomogeneous Temperature Field," Energies, MDPI, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:gam:jeners:v:11:y:2017:i:1:p:18-:d:123939
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    References listed on IDEAS

    as
    1. Sangwoo Park & Seokjae Lee & Hyobum Lee & Khanh Pham & Hangseok Choi, 2016. "Effect of Borehole Material on Analytical Solutions of the Heat Transfer Model of Ground Heat Exchangers Considering Groundwater Flow," Energies, MDPI, vol. 9(5), pages 1-19, April.
    2. Jalaluddin, & Miyara, Akio & Tsubaki, Koutaro & Inoue, Shuntaro & Yoshida, Kentaro, 2011. "Experimental study of several types of ground heat exchanger using a steel pile foundation," Renewable Energy, Elsevier, vol. 36(2), pages 764-771.
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