Temperature field spatio-temporal law and frozen-depth calculation of a tunnel in a seasonally frozen region

Xiaoming, Liang; Ye, Fei; Feng, Haolan; Han, Xingbo; Wang, Siyu; Zhang, Bingtao; Gu, Boyuan

doi:10.1016/j.coldregions.2022.103539

Cited by 13 publications

(7 citation statements)

References 18 publications

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“…The freezing damage to the lining interface includes wall cracking of the tunnel entrance, deformation and cracking of the lining, and freeze-thaw deterioration of the lining. It is caused by the frost heave inside and outside the lining [21]. Frost heave outside the lining means that the volume of the residual water between the lining and the surrounding rock increases when it freezes at low temperatures, which exerts a force on the lining structure.…”

Section: The Freezing Damage To the Lining Interfacementioning

confidence: 99%

“…This method has obvious limitations due to the influence of different geological conditions on different tunnel projects [8,[11][12][13][14][15][16][17][18]. (2) When analyzing the causes of freezing damage, these studies were mainly based on the existing engineering experience and lacked quantitative evaluation of the impact of various factors on the extent of freezing damage, which resulted in a significant limitation when they were used to guide the construction of other engineering projects [19][20][21][22][23][24]. Therefore, in tunnels in cold regions, the quantitative analysis of the factors and importance of inducing freezing damage should be paid attention to.…”

Section: Introductionmentioning

confidence: 99%

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Freezing Damage to Tunnels in Cold Regions and Weights of Influencing Factors

Shen

Dong

et al. 2022

Sustainability

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Concrete materials are widely used in tunnel engineering. In China, the cold regions have gradually become the main area for highway and railway construction. Affected by high altitude, low temperature, turbulent wind, and other conditions, freezing damage, such as tunnel icing, occurs in concrete materials, which seriously affects the quality and operational safety of tunnels in cold regions. Therefore, it is necessary to carry out a quantitative analysis of various factors affecting freezing damage to protect concrete materials in tunnels. This paper summarizes various freezing damage phenomena in tunnels in cold regions and divides them into three types: water seepage and hanging ice type freezing damage, lining interface type freezing damage, and tunnel foundation ice accumulation type freezing damage. Based on the qualitative evaluation of each factor, the affiliation of each factor was divided. Then, the influence weight of each factor on freezing damage was obtained through the analytic hierarchy process, and then each factor was ranked. This study is helpful to the selection of anti-freezing measures for tunnels in cold regions.

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Section: The Freezing Damage To the Lining Interfacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Freezing Damage to Tunnels in Cold Regions and Weights of Influencing Factors

Shen

Dong

et al. 2022

Sustainability

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“…In China, approximately 53% of the land area comprises seasonally frozen soil, primarily located in high altitude mountainous regions within the northeast, northwest, north, and southwest [1][2][3]. The construction and operation of tunnels in seasonally frozen areas are heavily influenced by frost heaving at the inlet/outlet of the tunnel, and the frequency and degree of frost damage will significantly increase with the freezing depth [4].…”

Section: Introductionmentioning

confidence: 99%

Distribution Pattern and Influencing Factors for the Temperature Field of a Topographic Bias Tunnel in Seasonally Frozen Regions

Tang¹,

Zhang

et al. 2023

Water

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In seasonally frozen regions, highway tunnels are prone to shallow buried bias pressures near the inlet/outlet, which leads to highway tunnels not only bearing asymmetric loads, but also facing the threat of extreme weather. However, there is still no clear understanding of the temperature field for topographically biased tunnel in seasonally frozen regions at present. Taking the Huitougou tunnel of Hegang-Dalian expressway as the object, this paper uses on-site monitoring, theoretical analysis, and numerical simulation to study the distribution law and influence factors of temperature field for topographically biased tunnel in seasonally frozen regions. The numerical results of the temperature field are in good agreement with the on-site monitoring data, which verified the accuracy of this numerical model based on the aerodynamic principle, turbulence model, and wall function method. Meanwhile, the effect of different slope angle and overburden thickness on the temperature field of the tunnel is further analyzed. It is found that when the slope angle increases, the temperature field in the tunnel surrounding rock changes accordingly. The connecting area between the surface and the tunnel temperature field is deflected from arch crown to the arch shoulder of the tunnel, resulting in a large change in the temperature of the shallow buried side, while minor change in the temperature of the deep buried side. The freezing depth of surrounding rock decreases with the rising slope angle. As the overburden thickness gradually increases, the temperature field of the surface surrounding rock and the tunnel surrounding rock gradually change from mutual influence to non-influence. When the overburden thickness exceeds 15 m, a “isolated temperature zone” appears in the middle with a temperature of 6~7 °C, the temperature field of the tunnel surrounding rock is basically not affected by the surface air temperature. These results can provide important theoretical and engineering guidance for the evaluation, construction, and maintenance of tunnel engineering in seasonally frozen regions.

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Section: Introductionmentioning

confidence: 99%

“…Additionally, the removal and replacement of damaged lining materials require substantial time and resources, leading to significant disruptions to tunnel operations and increased costs. Among them, lining cracking is the main form of tunnel freezing damage and causes more harm [7,8]. Cracking of the lining will cause instability of the lining structure, reduced safety and reliability, smaller tunnel headroom, tunnel leakage, and if the cracking expands further, it will produce lining off blocks or even sudden collapse, seriously threatening the safety of pedestrians and vehicles [9,10].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Cracking Mechanism and Control Measures of Tunnel Lining Cracking under the Freeze–Thaw Cycle

Yuan,

Ma,

Liu

et al. 2023

Sustainability

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With the rapid increase in the scale and number of tunnels in cold regions, the frost damage problems, such as cracking of the lining structure under the action of freeze–thaw cycles are becoming increasingly prominent. This review article collects and sorts out the frost damage phenomena that occur in the lining structure of tunnels in cold regions under the action of freezing and thawing cycles, classifies the frost damage phenomena into structural frost damage and non-structural frost damage, and proposes that the research on the mechanism of lining frost damage and its prevention measures should focus on lining cracking. According to the damage degree of the freeze–thaw cycle to the lining structure and its influence on tunnel operation, the cracking mode and cracking stage of lining are introduced. The analysis focuses on the mechanism of cracking in lining structures subjected to freeze–thaw cycles, considering the external force caused by frost heaving, the alteration of mechanical properties in lining concrete, and the internal changes in the microstructure of the concrete. Additionally, the factors that contribute to the occurrence of lining cracking are summarized. Based on this, corresponding control measures have been organized to provide reference for the development of cracking of the lining structure under the action of freeze–thaw cycle.

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Temperature field spatio-temporal law and frozen-depth calculation of a tunnel in a seasonally frozen region

Cited by 13 publications

References 18 publications

Freezing Damage to Tunnels in Cold Regions and Weights of Influencing Factors

Freezing Damage to Tunnels in Cold Regions and Weights of Influencing Factors

Distribution Pattern and Influencing Factors for the Temperature Field of a Topographic Bias Tunnel in Seasonally Frozen Regions

Recent Progress in the Cracking Mechanism and Control Measures of Tunnel Lining Cracking under the Freeze–Thaw Cycle

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