Experimental and numerical investigations on frost damage mechanism of a canal in cold regions

Li, Shuangyang; Zhang, Mingyi; Tian, Yulu; Pei, Wansheng; Zhong, Hua

doi:10.1016/j.coldregions.2015.03.013

Cited by 95 publications

(28 citation statements)

References 30 publications

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“…A recent literature by Li et al [4] proves that the creep of foundation soils should also be included in estimating the total deformation during freezing period and introduces an empirical viscoplastic criterion to model the creep strain rate. It can be inferred that, at a certain depth of the irrigation canals, e.g., the normal ow depth in irrigation period, only the gravitational force of canal and ow water should be considered in predicting settlement of foundations.…”

Section: Frost Heave In Concrete Canal Liningmentioning

confidence: 99%

“…where h v is the heat source of fluid; the subscripts u and f denote soils in unfrozen and frozen states; L is the latent heat due to ice-water phase change; and θ w and θ i are the volumetric contents of water and ice, respectively. is method has been successfully used in engineering design of lifeline projects in Qinghai-Tibetan plateau such as bridges, highways, and irrigation canals [4,[37][38][39].…”

Section: Heat Transfer Incorporating Ice-water Phase Changementioning

confidence: 99%

“…e mechanical parameters used in computation are obtained based on the test data presented in the literature [43]. Following the work by Li et al [4], the empirical equation below is used in describing the mechanical behaviors of frozen soils at various temperatures:…”

Section: Determination Of Modelmentioning

confidence: 99%

“…However, the lower proportion for canals with concrete lining has led to an alarming water leakage of about 173.4 bn•m 3 per year [2,3]. Even more severe is the threatening frost damage of lining structure under seasonal frost actions [4], as presented in Figure 1. e embedded depth of foundation was generally set below the frozen depth to address this issue, and the work quantity devoted may occupy about one-third of the overall.…”

Section: Introductionmentioning

confidence: 99%

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Frost Heave of Irrigation Canals in Seasonal Frozen Regions

Wang

Ding

et al. 2019

Advances in Civil Engineering

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Soil frost heave acts as a driver of the emerged fracture in the concrete lining of irrigation canals and subsequent water leakage in seasonal frozen ground. A model test was carried out on the frost heave of a U-shaped canal with concrete lining. The heat and water migration during freezing, and frost heave-induced deformation, and force in normal direction were live monitored by high-precision transducers. The results prove that the freezing front descends downward over time at a specified thermal boundary, with considerable migration of water within the scope of 0–40 cm. The maximum deformation occurred at the bottom of the lining and decreased upward with the rate of frost heave lowering over time while the normal force showing little change in the monitoring points, implying that stress concentration does not show up during freezing. Besides, the layered settlement observation reveals that frost heave dominates the total deformation while creep, the universal source of deformation, accounts for a negligible proportion. A practical model was proposed based on a simple theoretical model for heat-water coupled transfer in a partially saturated medium and was numerically implemented in COMSOL. The computed results were compared with the monitored data including frozen depth, water content, normal displacement, and frost heave force. Finally, the rational thickness of the insulation board was determined based on the partial insulation method.

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Section: Frost Heave In Concrete Canal Liningmentioning

confidence: 99%

Section: Heat Transfer Incorporating Ice-water Phase Changementioning

confidence: 99%

Section: Determination Of Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frost Heave of Irrigation Canals in Seasonal Frozen Regions

Wang

Ding

et al. 2019

Advances in Civil Engineering

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“…Li et al [14] established a two-dimensional hydrothermal conduction model to analyze the difference between new and traditional channel linings. Li et al [15] established a hydro-thermal coupling model to simulate freezing in the melting cycle and found that the maximum frost heave occurred at the toe of the channel slope. Liu et al [16] added an equivalent heat capacity of the heat of fusion to the heat conduction equation based on the Clapeyron equation and Darcy's law using three-field coupling software.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Frost Heave of Concrete Lining Trapezoidal Channel Under an Open System

Lou

2020

Water

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To study the distribution law of frost heave in base soil with a concrete lining structure and compound geomembrane, the coupled heat–moisture–stress, capillary action, and membrane water migration were considered, and multi-field coupling software was used to simulate the frost heaving of the channel. A 67-day frost heaving process of the foundation soil considering the change of groundwater level around a channel was also considered. The displacement fields at different positions on the base soil were obtained. The results showed that the frost heave was the largest at about one-third of the slope from the bottom of the channel, and the maximum is 8.243 cm. A compound geomembrane on the lower side of the lining can reduce the frost heaving of the foundation soil to some extent, and the maximum normal displacements of the lining along the slope and at the top of the channel decreased by 14.3% and 15.5% after adding the compound geomembrane.

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Simulation of heat–water–mechanics process in a freezing soil under stepwise freezing

Bai

Lai

You

et al. 2020

Permafrost & Periglacial

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Frost heave is a process coupling heat transfer, water migration, water–ice phase change and deformation. Frost heave forms various landforms, such as frost mounds, ice pitons, sorted polygons and stone circles, and potentially induces a variety of engineering failures, such as building inclination, differential engineering foundation and pavement cracking. To understand the mechanism of frost heave under complex freezing paths, we provide a numerical heat–water–mechanics model that incorporates shrinkage in an unfrozen zone and uses a water content criterion to judge the formation of the ice lens. The model is then used to simulate the moisture, temperature, deformation and ice lens of a freezing soil during stepwise freezing. The simulated results for temperature, displacement and the ice lens are in good agreement with measured data, indicating that the model can be used to describe the heat–water–mechanics process in freezing soils under a complex freezing path. The freezing path determines the soil's water content profile in a manner like that in a stepwise freezing process, where each step produces a water‐content peak at the frozen fringe of the step. The model must consider shrinkage of the unfrozen area, or the amount of frost heave would be overestimated and the predicted ice lens would unrealistically be found in the frozen zone.

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Experimental and numerical investigations on frost damage mechanism of a canal in cold regions

Cited by 95 publications

References 30 publications

Frost Heave of Irrigation Canals in Seasonal Frozen Regions

Frost Heave of Irrigation Canals in Seasonal Frozen Regions

Numerical Simulation of Frost Heave of Concrete Lining Trapezoidal Channel Under an Open System

Simulation of heat–water–mechanics process in a freezing soil under stepwise freezing

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