Research on the Adaptability of Mechanized Construction Methods for Highway Tunnel Sections with Shallow Burial and Asymmetric Loading

DOI

10.2991/978-94-6463-726-7_82How to use a DOI?

Keywords

highway tunnel; mechanized construction; method adaptability; numerical simulation

Abstract

To address the mismatch between construction techniques and efficiency in the context of mechanized construction, as well as the construction risks associated with significant uneven deformation faced by tunnels in shallow-buried and biased portal sections, an innovative approach using the “double-sided heading method for the upper hemisection and bench method for the lower hemisection” is proposed to replace traditional construction methods. Numerical simulations were conducted to calculate the deformation characteristics of the tunnel structure and surrounding rock. The results indicate: (1) The deformation of the surrounding rock gradually increases as tunnel excavation progresses, but within the construction cycle, the settlement deformation of the surrounding rock remains within a controllable range; (2) The maximum lateral deformation of temporary support increases initially with the advancement of construction steps, then decreases, and ultimately stabilizes by the sixth construction step; (3) The settlement deformation of the pipe shed exhibits a similar trend to the deformation of the surrounding rock, both gradually increasing as construction progresses. These findings suggest that the application of the new construction method in the context of mechanized construction not only improves construction efficiency but also ensures construction safety.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yichun Huang
AU  - Xiaoyue Kang
AU  - Kai Xu
AU  - Xingyu Chen
AU  - Dongxing Liu
PY  - 2025
DA  - 2025/06/13
TI  - Research on the Adaptability of Mechanized Construction Methods for Highway Tunnel Sections with Shallow Burial and Asymmetric Loading
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 814
EP  - 825
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_82
DO  - 10.2991/978-94-6463-726-7_82
ID  - Huang2025
ER  -