Numerical Analysis of Stress and Deformation of Tunnel Supporting Structures Passing Through Existing Anti-Slide Piles

WANG Pan; WANG Huaizheng; SONG Zhanping; GAN Langju; MEI Shujie

doi:10.13204/j.gyjzG22081603

Volume 53 Issue 11

Nov. 2023

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WANG Pan, WANG Huaizheng, SONG Zhanping, GAN Langju, MEI Shujie. Numerical Analysis of Stress and Deformation of Tunnel Supporting Structures Passing Through Existing Anti-Slide Piles[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(11): 36-41,96. doi: 10.13204/j.gyjzG22081603

Citation:

WANG Pan, WANG Huaizheng, SONG Zhanping, GAN Langju, MEI Shujie. Numerical Analysis of Stress and Deformation of Tunnel Supporting Structures Passing Through Existing Anti-Slide Piles[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(11): 36-41,96. doi: 10.13204/j.gyjzG22081603

Citation:

WANG Pan, WANG Huaizheng, SONG Zhanping, GAN Langju, MEI Shujie. Numerical Analysis of Stress and Deformation of Tunnel Supporting Structures Passing Through Existing Anti-Slide Piles[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(11): 36-41,96. doi: 10.13204/j.gyjzG22081603

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Numerical Analysis of Stress and Deformation of Tunnel Supporting Structures Passing Through Existing Anti-Slide Piles

doi: 10.13204/j.gyjzG22081603

1. Sinohydro Bureau 7 Co., Ltd., Chengdu 611130, China;
2. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
3. Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi'an 710055, China

Received Date: 2022-08-16

Abstract

Abstract

The force and deformation forms of the supporting structure of tunnels are usually complicated in complex conditions. Especially in the landslide area, the supporting structure is in a eccentrically compressive state. Based on the entrance section of Sunshine Tunnel in Panzhihua, the force and deformation characteristics of the supporting structure of tunnels in the condition of existing anti-slide piles cut off by shallowly burized tunnels were studied. A three-dimensional model was constructed by the numerical simulation software MIDAS GTS NX to analyze the internal forces and stress in the supporting structure and predict the weakness of the supporting structure in the tunnelling process. According to the simulation results, the shed-pipe support produced overall displacement, and the maximum deformation was 35.35 mm. The initial support produced extrusion deformation, and the maximum deformation was 34.36 mm. The internal force in the left arch waist of the supporting structure was larger due to stress concentration, while the removal of temporary supports had a greater impact on the stress at the vault and invert. The monitored data showed that the pressure in surrounding rock was uneven, and the contact pressure at the vault was largest. The pressure on the right side of the supporting structure was greater than that on the left side, and the maximum pressure was 268.60 kPa.
- tunnel engineering,
- numerical simulation,
- anti-slide pile,
- supporting structure

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References(13)

References

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