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Volume 35 Issue 11
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HU Qi, LING Dao-sheng, CHENG Ze-hai, CHEN Zheng. Effects of temperature stress on diaphragm wall of circular deep foundation pit[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(11): 2139-2143.
Citation: HU Qi, LING Dao-sheng, CHENG Ze-hai, CHEN Zheng. Effects of temperature stress on diaphragm wall of circular deep foundation pit[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(11): 2139-2143.
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Effects of temperature stress on diaphragm wall of circular deep foundation pit

  • 1. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China; 2. Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University, Hangzhou 310027, China; 3. School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, China; 4. East China Electric Power Design Institute, Shanghai 200063, China

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  • Received Date: February 04, 2013
  • Published Date: November 19, 2013
    Graphical Abstract
    • Abstract
  • The effects of temperature on retaining structure of deep foundation pits are related with the thermal-mechanical coupling problem of temperature and stress fields and the interaction of water, soils and retaining structures. Through the back analysis of the measured data of Shin-Toyosu substation deep foundation pit in Tokyo, an analysis method for the effects of temperature fields on retaining structures of circular deep foundation pit is determined, and the changing patterns of temperature fields in the retaining structures are acquired. The research results are applied to the analysis of Shanghai 2010 Expo underground substation. The results show that the inner surface of the retaining structures is exposed to the atmosphere, and that temperature difference occurs between the inner and the outside of the wall due to change of atmospheric temperature. The temperature fields vary in different positions and construction stages. There is no constraint effect of soils in the pit, so the hoop stress of diaphragm wall above the excavation face mainly depends on the water-earth pressure outside the pit, and if temperature decreases, the volume of diaphragm wall will shrink. The diaphragm wall under or near the excavation face is restricted by the soils in the pit, so the hoop stress of the diaphragm wall will decrease when the temperature decreases.
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    • References (11)
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