Volume 39 Issue 1
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Kang Kai, Li Ning, Shi Wei, Tan Tianxiang, Wang Shujing. Stability analysis of deep foundation pit excavation on adjacent buildings[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(1): 89-96. doi: 10.20265/j.cnki.issn.1007-2993.2023-0822
Citation: Kang Kai, Li Ning, Shi Wei, Tan Tianxiang, Wang Shujing. Stability analysis of deep foundation pit excavation on adjacent buildings[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(1): 89-96. doi: 10.20265/j.cnki.issn.1007-2993.2023-0822
shu

Stability analysis of deep foundation pit excavation on adjacent buildings

doi: 10.20265/j.cnki.issn.1007-2993.2023-0822
  • 1.

    School of Civil and Architectural Engineering, Xi’an University of Technology, Xi’an 710048, Shaanxi, China

  • 2.

    Shaanxi Engineering Technology Research Center for Urban Geology and Underground Space, Xi’an 710068, Shaanxi, China;

  • 3.

    .Shaanxi Hydrogeolog Engineering Geology and Environment Geology Survey Center, Xi’an 710068, Shaanxi, China

  • 4.

    China Construction Eighth Engineering Bureau Co., Ltd., Shanghai 200112, China

  • Received Date: 2023-10-31
  • Accepted Date: 2024-05-09
  • Rev Recd Date: 2024-04-15
  • Publish Date: 2025-02-21
    Abstract
  • The deformation of adjacent existing buildings induced by deep foundation pit excavation and unloading poses a significant and challenging issue in urban infrastructure construction. A numerical analysis model was established based on the reconstruction and expansion project of a building in Xi’an. Different supporting structures and the spacing between buildings and the foundation pit were investigated as research variables to analyze the impact characteristics of deep foundation pit excavation on adjacent existing buildings under various working conditions. The results revealed that the pile-anchor support system exhibited the best enclosure effect, while double-row piles could also achieve good supporting performance under appropriate pile spacing. Furthermore, the disturbance caused by foundation pit excavation has a limited range; specifically, buildings located beyond 12 m from the excavation site experienced negligible disturbance that did not compromise their safe use.

     

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