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Disturbance Effect on Existing Buildings Caused by Tunneling of Shield Superimposed Tunnel in Water-rich Sand Layer
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Youchao DU1, Limin SHI1, Xiangxun KONG2, 3, 4, Changrui YAO2, Jinji MA2, Yunsheng LEI1, Chunchao LI1, Yuhui LIU1
Science Technology and Industry | 2025, 25(8) : 64 - 72
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Science Technology and Industry | 2025, 25(8): 64-72
• Technology Innovation •
Disturbance Effect on Existing Buildings Caused by Tunneling of Shield Superimposed Tunnel in Water-rich Sand Layer
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Youchao DU1, Limin SHI1, Xiangxun KONG2, 3, 4, Changrui YAO2, Jinji MA2, Yunsheng LEI1, Chunchao LI1, Yuhui LIU1
Affiliations
  • 1 CCCC First Harbor Engineering Co. Ltd., Tianjin 300461, China
  • 2 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
  • 3 Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, China
Published: 2025-04-25
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The construction forms of overlapping sections of shield tunnels are complicated, so it is urgent to investigate the response rules of existing buildings to the disturbance of tunnel construction, so as to reduce the potential construction risks. In this paper, the finite element method was used to simulate the influence of mud-water shield machine on the existing building foundation when the superimposed shield tunnel was driven. First, the down tunnel was excavated, then the up tunnel was excavated, and the concrete influence of this sequence on the stability of the foundation was studied. The simulation results are compared with the field monitoring data to verify the reliability of the model. The results show that the foundation bottom continues to settle when the tunnel is excavated. When the tunnel is excavated, the settlement of the foundation slows down and a slight uplift occurs. After the completion of the ascending tunnel, the settlement at the bottom of the foundation presents a linear distribution. In addition, the vertical load increases on the basis of the main influence of the stacked tunnel under the existing buildings, which makes the lining stress and deformation increase. The research results will provide design and reference value for cascade tunnel engineering.

water-rich sand layer  /  shield  /  overlapping crossing  /  existing buildings  /  ground subsidence
Youchao DU, Limin SHI, Xiangxun KONG, Changrui YAO, Jinji MA, Yunsheng LEI, Chunchao LI, Yuhui LIU. Disturbance Effect on Existing Buildings Caused by Tunneling of Shield Superimposed Tunnel in Water-rich Sand Layer[J]. Science Technology and Industry, 2025 , 25 (8) : 64 -72 .
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Article Info
  • Receive Date：2024-09-19
  • Online Date：2025-07-19
  • Published：2025-04-25
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  • Received：2024-09-19
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Affiliations
    1 CCCC First Harbor Engineering Co. Ltd., Tianjin 300461, China
    2 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
    3 Chongqing Research Institute, Harbin Institute of Technology, Chongqing 401135, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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