Two-dimensional finite element modeling of long-term frost heave beneath chilled gas pipelines

Dayarathne, Rajith; Hawlader, Bipul; Phillips, Ryan; Robert, Dilan

doi:10.1016/j.coldregions.2023.103781

Cited by 7 publications

(1 citation statement)

References 38 publications

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“…Studies on the mechanical behavior of buried pipelines under low temperature have been conducted using numerical simulations [20][21][22][23][24][25][26][27], experimental methods [22,[28][29][30][31] and analytical methods [23,32,33]. Wu et al [23] investigated the mechanical behavior of underground oil pipeline in permafrost region using an elastic-plastic finite element model, considering the effects of temperature and moisture fields.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the thermal response and Mechanical Behavior of Water Distribution Pipelines subjected to extreme Cold Wave

Qunfang,

Ayinde,

Fei

et al. 2024

Preprint

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Water distribution pipelines play a critical role in delivering safe drinking water to communities, yet their susceptibility to extreme climate events presents significant safety and structural challenges. Recent observations have noted an increase in pipe failures during cold waves, underscoring the need to address these risks. While much research has focused on statistical analysis of pipe failures due to low temperatures, limited attention has been given to the mechanical behavior of pipelines under thermal-induced stress during cold waves. This study addresses this gap by developing a 3D finite element model to investigate the thermal responses and mechanical behavior of buried water distribution pipelines under cold wave conditions. Key parameters including temperature differences, soil temperature reduction rates, pipe wall thickness, and internal water pressure are examined to understand their effects on pipeline stress, strain, and displacement. Results show that as pipe temperature decreases, the pipe contracts, particularly impacting the springline. Over time, pipeline stress transitions from tension to compression. A temperature difference of approximately 18℃ leads to an 85% increase in axial strain and a 6.5% increase in Mises stress. Increasing the rate of temperature reduction minimally affects pipeline stress but significantly impacts displacements. Moreover, increasing pipe wall thickness effectively reduces pipeline stress by 102.8% and axial strain by 17.4%. Higher internal water pressure results in elevated pipeline stress but reduced displacement. These findings underscore the importance of considering thermal-mechanical interactions during cold waves to prevent failures and ensure operational integrity in water distribution pipelines.

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Section: Introductionmentioning

confidence: 99%

Numerical investigation of the thermal response and Mechanical Behavior of Water Distribution Pipelines subjected to extreme Cold Wave

Qunfang,

Ayinde,

Fei

et al. 2024

Preprint

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State of the Art of Coupled Thermo–hydro-Mechanical–Chemical Modelling for Frozen Soils

Li,

Yin

2024

Arch Computat Methods Eng

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Numerous studies have investigated the coupled multi-field processes in frozen soils, focusing on the variation in frozen soils and addressing the influences of climate change, hydrological processes, and ecosystems in cold regions. The investigation of coupled multi-physics field processes in frozen soils has emerged as a prominent research area, leading to significant advancements in coupling models and simulation solvers. However, substantial differences remain among various coupled models due to the insufficient observations and in-depth understanding of multi-field coupling processes. Therefore, this study comprehensively reviews the latest research process on multi-field models and numerical simulation methods, including thermo-hydraulic (TH) coupling, thermo-mechanical (TM) coupling, hydro-mechanical (HM) coupling, thermo–hydro-mechanical (THM) coupling, thermo–hydro-chemical (THC) coupling and thermo–hydro-mechanical–chemical (THMC) coupling. Furthermore, the primary simulation methods are summarised, including the continuum mechanics method, discrete or discontinuous mechanics method, and simulators specifically designed for heat and mass transfer modelling. Finally, this study outlines critical findings and proposes future research directions on multi-physical field modelling of frozen soils. This study provides the theoretical basis for in-depth mechanism analyses and practical engineering applications, contributing to the advancement of understanding and management of frozen soils.

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Measurement and modeling of excess pore-water pressure in warm saturated frozen soil based on dynamic loading effect

Zhang,

Hu,

et al. 2025

Alexandria Engineering Journal

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Two-dimensional finite element modeling of long-term frost heave beneath chilled gas pipelines

Cited by 7 publications

References 38 publications

Numerical investigation of the thermal response and Mechanical Behavior of Water Distribution Pipelines subjected to extreme Cold Wave

Numerical investigation of the thermal response and Mechanical Behavior of Water Distribution Pipelines subjected to extreme Cold Wave

State of the Art of Coupled Thermo–hydro-Mechanical–Chemical Modelling for Frozen Soils

Measurement and modeling of excess pore-water pressure in warm saturated frozen soil based on dynamic loading effect

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