Mechanical Characteristics Analysis of Fully Assembled Inverted Arch Structure in Highway Tunnels

DOI

10.2991/978-94-6463-932-2_20How to use a DOI?

Keywords

Highway tunnel; Monolithic prefabricated invert; Distress remediation; Mechanical behavior; Numerical simulation

Abstract

Aiming at the cracking and water leakage distresses caused by insufficient invert thickness and material weakening in highway tunnels, this paper proposes a monolithic fully prefabricated invert structure scheme. A refined load-structure model is established based on Abaqus to systematically analyse the mechanical response of the structure. The research results show that the mid-span thickening design controls the peak tensile stress in the pure bending section at 1.98 MPa, which is lower than the tensile strength of C35 concrete (2.2 MPa), effectively suppressing through cracks caused by insufficient thickness. The steel bar stress still maintains a continuous distribution of 390–420 MPa after concrete damage, verifying the amelioration effect of ductility design on material weakening distresses. The jointless structure eliminates the risk of water leakage and enhances the overall stiffness. This scheme provides a solid technical support for the remediation of invert distresses in small and medium-section tunnels.

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  - Zhishun He
AU  - Yichun Huang
AU  - Sanfeng Quan
AU  - Kai Xu
AU  - Rongchao Li
AU  - Wenqian Li
AU  - Meng Wang
PY  - 2025
DA  - 2025/12/22
TI  - Mechanical Characteristics Analysis of Fully Assembled Inverted Arch Structure in Highway Tunnels
BT  - Proceedings of the 2025 2nd International Conference on Civil Engineering Structures and Concrete Materials (CESCM 2025)
PB  - Atlantis Press
SP  - 185
EP  - 196
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-932-2_20
DO  - 10.2991/978-94-6463-932-2_20
ID  - He2025
ER  -