Volume 39 Issue 1
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Zhang Jiangtao, Pu Zhenhua, Zhang Yudong, Li Quanchao, Jiang Jie, Wei Dengtao. Influence of shallow tunnel construction on adjacent pile foundation and reinforcement measures[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(1): 55-62. doi: 10.20265/j.cnki.issn.1007-2993.2023-0794
Citation: Zhang Jiangtao, Pu Zhenhua, Zhang Yudong, Li Quanchao, Jiang Jie, Wei Dengtao. Influence of shallow tunnel construction on adjacent pile foundation and reinforcement measures[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(1): 55-62. doi: 10.20265/j.cnki.issn.1007-2993.2023-0794
shu

Influence of shallow tunnel construction on adjacent pile foundation and reinforcement measures

doi: 10.20265/j.cnki.issn.1007-2993.2023-0794
  • 1.

    China Railway Tunnel Bureau Group Construction Co., Ltd., Nanning 530003, Guangxi, China

  • 2.

    School of Civil Engineering and Architecture, Guangxi University, Nanning 530004, Guangxi, China

  • Received Date: 2023-10-19
  • Accepted Date: 2024-08-29
  • Rev Recd Date: 2024-01-31
  • Publish Date: 2025-02-21
    Abstract
  • To study the influence of the shallow tunnel construction on the adjacent pile foundation and the reinforcement measures, this research relies on the Lu’ao Road underpassing Maqing Road project to establish a finite element model. The surface settlement caused by shallow tunnel excavation and the deformation and internal force distribution law of the pile foundation were analyzed. It was found that the maximum horizontal displacement of the pile foundation (3.63 mm) exceeded the deformation control index (3 mm) and had a large impact on the internal force of the adjacent pile foundation. The protective measures of grouting reinforcement were proposed, and the protective effects of different reinforcement depths were compared and analyzed. The results show that grouting reinforcement of the soil around the pile foundation can significantly reduce the deformation and internal force of the pile foundation, and better results can be achieved when the depth of grouting reinforcement is 15 m. The reliability of the model and the rationality of reinforcement measures are verified by comparing them with the field monitoring data.

     

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