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Volume 46 Issue S1
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LI Jiandong, YUAN Guangzong, BIAN Tianqi, ZHAO Yue, AN Xiaoyu. Influences of twin-tunnel excavation on settlement of shallow foundation buildings[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 147-151. DOI: 10.11779/CJGE2024S10015
Citation: LI Jiandong, YUAN Guangzong, BIAN Tianqi, ZHAO Yue, AN Xiaoyu. Influences of twin-tunnel excavation on settlement of shallow foundation buildings[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 147-151. DOI: 10.11779/CJGE2024S10015
shu

Influences of twin-tunnel excavation on settlement of shallow foundation buildings

  • 1.

    Tianjin Research Institute for Water Transport Engineering, MOT, Tianjin 300456, China

  • 2.

    School of Civil Engineering, Tianjin University, Tianjin 450001, China

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  • Received Date: April 28, 2024
    Graphical Abstract
    • Abstract
  • Based on the centrifugal model tests and numerical calculations, the settlement laws of the upper shallow foundation buildings and ground caused by twin tunnel excavation are studied. The results show that the settlements of different monitoring points in the shallow foundation buildings increase with the increase of soil loss rate. As the soil loss rate increases, the uneven settlements of the upper shallow foundation buildings increase, the vertical displacements of the soil above the tunnel gradually increase, and the range of the settlement trough gradually increases. Under the tunnel spacing of 1D in this project, changes in the excavation sequence of the two tunnels have a relatively small impact on the settlements of the upper buildings and the maximum ground settlement. However, the ground settlements at the tunnel vault excavated first is greater than those at the tunnel vault excavated later.
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