Author(s)

Yi Ruyi ¹, Ren Ruile ²

Affiliation(s)

¹ Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing, 100142, China
² Key Laboratory of Urban Security and Disaster Engineering of the Ministry of Education, Beijing, 100142, China

Corresponding Author

Yi Ruyi

ABSTRACT

As the medium of train vibration propagation, it is an important basis to study the vibration of the surrounding environment to clarify the propagation attenuation law of train-induced vibration in the formation.In this paper, a refined three-dimensional finite element numerical model of the overall track bed-lining structure-stratum is established, the train load is simplified into a series of moving excitations, and the train moving load is linked with the ABAQUS program through the Dload subprogram to realize the application of the train load, which reveals the vertical and horizontal vibration response laws of the soil and lining structure around the tunnel caused by the train vibration load, and analyzes the influence of different train running speeds on the vibration propagation law.The results show that in the lining structure between the central axes of the two rails, the vibration acceleration reaches the maximum, and the horizontal vibration caused by the vertical vibration load cannot be ignored; for the vertical vibration, the attenuation rate is 65%-70% from the tunnel wall R along the soil layer above the tunnel vault and below the tunnel bottom; for the horizontal vibration, the attenuation rate of the soil layer along the tunnel waist is about 35% in the range of R from the tunnel wall; and the vibration acceleration decreases significantly with the increase of train speed.

KEYWORDS

Shield tunnels; train loads; Infinite Element; numerical simulation; Power response

CITE THIS PAPER

Yi Ruyi, Ren Ruile, Vibration Response Analysis of Soil Mass in Shield Tunnel under Subway Load. Journal of Civil Engineering and Urban Planning (2024) Vol. 6: 118-127. DOI: http://dx.doi.org/10.23977/jceup.2024.060217.

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Sponsors, Associates, and Links

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• Journal of Sustainable Development and Green Buildings
  
  
• Landscape and Urban Horticulture
  
  
• Bridge and Structural Engineering
  
  
• Soil Mechanics and Geotechnical Engineering
  
  
• Journal of Municipal Engineering
  
  
• Heating, Ventilation and Air Conditioning
  
  
• Indoor Air Quality and Climate
  
  
• Computer Aided Architecture Design