The Algorithm of Tunnel Heave Deformation Caused by Soil Unloading After Deep Excavation

WANG Zhenfeng; ZHAO Ting; XU Mingxia; LIU Hongxia

doi:10.13204/j.gyjzG20122322

Volume 52 Issue 3

Jul. 2022

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WANG Zhenfeng, ZHAO Ting, XU Mingxia, LIU Hongxia. The Algorithm of Tunnel Heave Deformation Caused by Soil Unloading After Deep Excavation[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 53-59,104. doi: 10.13204/j.gyjzG20122322

Citation:

WANG Zhenfeng, ZHAO Ting, XU Mingxia, LIU Hongxia. The Algorithm of Tunnel Heave Deformation Caused by Soil Unloading After Deep Excavation[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(3): 53-59,104. doi: 10.13204/j.gyjzG20122322

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The Algorithm of Tunnel Heave Deformation Caused by Soil Unloading After Deep Excavation

doi: 10.13204/j.gyjzG20122322

1. Shaanxi Institute of Technology, Xi’an 710300, China;
2. Xi’an Wenchang Libao Information Technology Co., Ltd., Xi’an 710065, China

Received Date: 2020-12-23

Abstract

Abstract

To improve the safety of tunnel construction, the calculation methods for tunnel deformation caused by calculation methods deep aucavation construction were discussed. The influencing factors of heave deformation on tunnels were analyzed, and the for heave deformation caused by unloading during excavation were simplifien. The additional load on tunnels and foundation beam stiffness of tunnels caused by unloading in excavation were analyzed by two-stage analysis method. Finally, the finite element analysis method was used to analyze the tunnel deformation caused by municipal construction of Line 2 in Xi’an. The results showed that: The application of two-stage stress analysis method successfully calculated the additional load on the tunnel caused by unloading deep excavation. The Pasternak model, Winkler model, and Kerr model were used, and the Kerr model was more accurate.
- Kerr model,
- finite element analysis method,
- two-stage analysis method,
- tunnel deformation

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References(31)

References

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