TWO-PARAMETER FROST-HEAVING MECHANICAL MODEL FOR TRAPEZOIDAL CANAL ON PASTERNAK FOUNDATION CONSIDERING DOUBLE SHEAR EFFECT UNDER OPEN SYSTEM CONDITION

被引：0
|
作者：
Xiao M. [1 ]
Wang Z.-Z. [2 ,3 ,4 ]
Wu L. [1 ]
Yang X.-S. [5 ]
Cui H. [1 ]
Ge J.-R. [6 ]
机构：
[1] College of Construction Engineering, Jiangxi S&T Normal University, Jiangxi, Nanchang
[2] Arid and Cold Regions Water Engineering Safety Research Center, Northwest A&F University, Yangling Agricultural Hi-tech Industries Demonstration Zone, Shaanxi, Xianyang
[3] Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Northwest A&F University, Yangling Agricultural Hi-tech Industries Demonstration Zone, Shaanxi, Xianyang
[4] State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, CAS, Gansu, Lanzhou
[5] College of Water Conservancy and Construction Engineering, Tarim University, Xinjiang, Alaer
[6] College of Energy and Power Engineering, Lanzhou University of Technology, Gansu, Lanzhou
来源：
Gongcheng Lixue/Engineering Mechanics | 2024年 / 41卷 / 04期
关键词：
canal; double shear effect; frost heave; frozen soil engineering; open system; Pasternak model;
D O I：
10.6052/j.issn.1000-4750.2022.04.0330
中图分类号：
学科分类号：
摘要：
Existing Winkler model cannot reflect the interaction between soil springs and needs to presuppose the distribution of tangential ad-freezing force. To overcome these shortcomings, two-parameter frost-heaving mechanical model is put forward for trapezoidal canal on Pasternak foundation considering double shear effect. Normal interaction between frozen soil and concrete lining is reflected in the model through introducing a shear layer. Tangential interaction between frozen soil and concrete lining is reflected in the model including contact interfacial layer. The frost heave displacements of lining plates are computed based on a trapezoidal canal in the Tarim irrigation area, serving as a prototype. The results obtained from the presented method, material mechanics method, and Winkler model are compared with the observed values through a comprehensive analysis. The findings suggest that the results obtained through the Pasternak method exhibit a higher level of conformity with observed values, as it takes into account the reduction in frost heave force resulting from frost-induced deformation and the interaction among Winkler soil springs. Furthermore, parameter analysis for tangential displacement of each point on concrete lining under different interface shearing stiffness kx is carried out. The results show that, as kx is smaller, tangential displacement of each point on interface tends to follow linear distribution, and tangential freezing force on interface also tends to follow linear distribution; as kx is larger, tangential displacement of each point on interface deviates from linear distribution, and tangential freezing force on interface also deviates from linear distribution, so linear distribution hypothesis is no longer applicable under such condition. The model can more adequately describe the interaction between concrete lining and frozen soil on contact interface, and therefore the computational accuracy of the model is improved effectively. © 2024 Tsinghua University. All rights reserved.
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页码：70 / 80
页数：10
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  • [1] WANG Zhengzhong, JIANG Haoyuan, WANG Yi, Et al., Research progresses and frontiers in anti-seepage and anti-frost heave of canals in cold-arid regions, Transactions of the Chinese Society of Agricultural Engineering, 36, 22, pp. 120-132, (2020)
  • [2] ZHU Zhiwu, NING Jianguo, MA Wei, Constitutive model and numerical analysis for the coupled problem water, temperature and tress fields in the process of soil freeze-thaw, Engineering Mechanics, 24, 5, pp. 138-144, (2007)
  • [3] WU Jianjun, HAN Tianyi, Numerical research on the coupled process of the moisture-heat-stress filed in saturated soil during freezing, Engineering Mechanics, 26, 4, pp. 246-251, (2009)
  • [4] LI Shunqun, ZHANG Xuncheng, CHEN Zhixiang, Et al., Model tests and similarity criteria for nonlinear freezing of rock and soil, Engineering Mechanics, 36, 1, pp. 192-199, (2019)
  • [5] LIU Quanhong, WANG Zhengzhong, LI Zhanchao, Et al., Transversely isotropic frost heave modeling with heat-moisture-deformation coupling [J], Acta Geotechnica, 15, 5, pp. 1273-1287, (2020)
  • [6] AN Peng, XING Yichuan, ZHANG Aijun, Thickness calculation and numerical simulation of insulation board for canal using partial insulation method, Transactions of the Chinese Society of Agricultural Engineering, 29, 17, pp. 54-62, (2013)
  • [7] LI Jialin, WANG Zhengzhong, Mechanical model and structure for frost-heaving damage resistance of concrete lining canals, (2013)
  • [8] SHEN Xiangdong, ZHANG Yupei, WANG Liping, Stress analysis of frost heave for precast concrete panel lining trapezoidal cross-section channel, Transactions of the Chinese Society of Agricultural Engineering, 28, 16, pp. 80-85, (2012)
  • [9] SONG Ling, OUYANG Hui, YU Shuchao, Frost heaving and capacity of frozen heaving resistance of trapezoidal concrete lining canal with water in winter, Transactions of the Chinese Society of Agricultural Engineering, 31, 18, pp. 114-120, (2015)
  • [10] TANG Shaorong, WANG Hongyu, Mechanical model of small U-shaped concrete lining canal with three arc-plates under frost heaving, Transactions of the Chinese Society of Agricultural Engineering, 24, 1, pp. 18-23, (2016)
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