THERMAL SCIENCE

International Scientific Journal

Ning Li

,

Zhi-Qiang Liu

,

Guo-Dong Niu

,

Jian Zhang

,

Jun-Ping Li

,

Fan Zhang

NUMERICAL SIMULATION CONSIDERING THE EFFECT OF UNEVEN FROST HEAVE ON TUNNEL STRUCTURE IN COLD REGIONS

ABSTRACT
Freezing damage is one of the main diseases of tunnels in cold regions. Water storage behind the lining is a necessary condition for freezing damage. Compared with the previous condition of uniform water storage behind the lining, this paper explores the influence of water storage and frost heave at different positions on tunnel structure in cold regions. Based on the theory of thermo-hydro-mechan­ical coupling. The finite element model of tunnel surrounding rock in cold area under different positions and different water content is established and compared by using COMSOL software, the mechanical characteristics of tunnel lining under different water storage positions behind the lining are studied, and the influence of frost heave at different positions on tunnel structure is explored. The numerical simulation results show that no matter where the local water storage area is lo­cated, the area with the largest frost heave force is located in the lining structure, close to the surrounding rock. Different local water storage positions will also have different influences on the tunnel structure. In the same water storage area, the frost heave force will increase with the decrease of temperature.
KEYWORDS
uneven frost heave, frozen soil, thermal-hydro-mechanical coupling, comsol, tunnel, local water storage
PAPER SUBMITTED: 2021-03-02
PAPER REVISED: 2021-04-05
PAPER ACCEPTED: 2021-06-22
PUBLISHED ONLINE: 2021-12-24
DOI REFERENCE: https://doi.org/10.2298/TSCI2106545L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4545 - 4552]
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Numerical simulation considering the effect of uneven frost heave on tunnel structure in cold regions

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence