Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (2): 541-545.doi: 10.13278/j.cnki.jjuese.201502202

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Research on Construction Spatial Effects in Long Foundation Pit

Yang Lichun1, Pang Yubin1, Li Shengang2   

  1. 1. China Northeast Architectural Design & Research Institute CO., LTD, Shenyang 110003, China;
    2. School of Resources&Civil Engineering, Northeastern University, Shenyang 110819, China
  • Received:2014-09-25 Published:2015-03-26

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Abstract:

Using the numerical simulation, we calculated and analyzed the process of excavation by section and block of foundation pit at Panjin underground commercial street. The results show that with the increase of the excavation section length, the maximum lateral displacement of supporting piles shows the tendency of reduction at first and increase afterwards; while the basement uplift shows the tendency of inereasing. With the increase of the excavation block length, the lateral displacement of supporting piles on protected sides shows the same tendency of reducing at first and increasing afterwards. Taking into account the spatial effect in the excavation, the long foundation pits can mitigate the deformation of supporting structure and formation effectively. Considering whether the excavated soil has enough strength to limit the deformation of supporting structure and formation in the process of foundation pit excavation with different section and block could make spatial effect significantly.

Key words: foundation pit excavation, spatial effects, numerical simulation, section construction

CLC Number: 

  • TU94.1

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