Volume 38 Issue 1
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Zhuang Xuzhe, Yuan Congcong, He Xiaohui, Zeng Chen, Shi Yufeng, Ding Haibin, Meng Fanshi. Analysis of Force and Deformation of a Double-row Steel Pipe Pile Cofferdam in a Foundation Pit in a Lake[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2024, 38(1): 1-6. doi: 10.3969/j.issn.1007-2993.2024.01.001
Citation: Zhuang Xuzhe, Yuan Congcong, He Xiaohui, Zeng Chen, Shi Yufeng, Ding Haibin, Meng Fanshi. Analysis of Force and Deformation of a Double-row Steel Pipe Pile Cofferdam in a Foundation Pit in a Lake[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2024, 38(1): 1-6. doi: 10.3969/j.issn.1007-2993.2024.01.001
shu

Analysis of Force and Deformation of a Double-row Steel Pipe Pile Cofferdam in a Foundation Pit in a Lake

doi: 10.3969/j.issn.1007-2993.2024.01.001
  • 1.

    China Railway 14th Bureau Group 4th Engineering Co., Ltd., Jinan 250002, Shandong, China

  • 2.

    Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China

  • 3.

    Nanchang Rail Transit Group Co., Ltd., Nanchang 330038, Jiangxi, China

  • Received Date: 2022-06-18
  • Accepted Date: 2023-05-06
  • Rev Recd Date: 2023-03-27
    • Available Online: 2024-02-05
  • Publish Date: 2024-02-05
    Abstract
  • Cofferdams need to be used to ensure the dry construction site for foundation pit located in water areas. However, the study on cofferdams deformation is still not perfect. Based on the research background of Aixihu Tunnel project in Nanchang, Midas GTS NX finite element software was used to study the influence of cofferdam width and tie bar position on the deformation law of double-row steel pipe pile cofferdam. The model is proved to be correct by comparing the simulation results with the actual measurements. The results show that the cofferdam width has an appropriate range, too small and too large will cause the cofferdam deformation is too large. In this project, the reasonable width of cofferdam should be 3.5～4.5 m. The change of cofferdam width has little influence on the excavation deformation of cofferdam foundation. Considering the deformation of both sides of the steel pipe pile, the deformation of the tie rod is small when it is set at 0.8 m on the top of the cofferdam.

     

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