整体式U形渠道不同断面结构抗冻胀性研究

doi:10.12068/j.issn.1005-3026.2020.09.021

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (9): 1341-1347.DOI: 10.12068/j.issn.1005-3026.2020.09.021

整体式U形渠道不同断面结构抗冻胀性研究

王玉宝^1,2，王亮^1,2，程森浩^1,2，胡战峰³

(1. 西北农林科技大学旱区农业水土工程教育部重点实验室，陕西杨凌712100; 2. 西北农林科技大学中国旱区节水农业研究院，陕西杨凌712100; 3. 陕西省桃曲坡水库灌溉管理局，陕西铜川727031)

收稿日期:2020-01-02 修回日期:2020-01-02 出版日期:2020-09-15 发布日期:2020-09-15
通讯作者: 王玉宝
作者简介:王玉宝(1975-)，男，河南信阳人，西北农林科技大学研究员，博士生导师.
基金资助:
国家重点研发计划项目(2016YFC0400205)；国家自然科学基金资助项目(41871207).

Study on Frost Heave Resistance of Different Section Structures of U-Shaped Canal

WANG Yu-bao^1,2， WANG Liang^1,2， CHENG Sen-hao^1,2， HU Zhan-feng³

1. Key Laboratory of Agricultural Soil and Water Engineering in Arid Areas， Ministry of Education， Northwest A & F University， Yangling 712100， China; 2. Institute of Water-Saving Agriculture in Arid Regions of China， Northwest A & F University， Yangling 712100， China; 3. Taoqupo Reservoir Irrigation Management Bureau of Shaanxi Province， Tongchuan 727031， China.

Received:2020-01-02 Revised:2020-01-02 Online:2020-09-15 Published:2020-09-15
Contact: WANG Liang
About author:-
Supported by:
-

摘要/Abstract

摘要： 针对倾角与渠道衬砌抗冻胀性定量关系存在不足的问题，以河套灌区D80整体式U形渠道为例，结合力学模型和数值模拟，分析不同条件下适用于当地冻胀环境的整体式U形渠道断面结构.结果表明:倾角越小渠道越窄深，渠顶水平冻胀量越大，渠底应力越大；反之，倾角越大渠道越宽浅，渠底竖向冻胀量越大.渠基土冻胀性、渠道混凝土衬砌强度和厚度对渠道抗冻胀性影响较大.对于亚黏土基土，选择0.07m厚衬砌，10°倾角为宜；对于粉土基土，选择0.08m厚衬砌，13°倾角为宜.

关键词: U形渠道, 力学模型, 数值模拟, 冻胀

Abstract: Aiming at the insufficient quantitative relationship between the obliquity and frost heave performance of canal lining， the mechanical model and numerical simulation were combined to study suitable U-shaped canal cross-section structure for local frost heave environment under different conditions， taking the D80 U-shaped canal as an example in Hetao irrigation district， Inner Mongolia. The results show that the smaller the obliquity and the narrower and deeper the canal， the greater the horizontal frost heave at the top of canal and the lager the stress at the bottom of canal. Conversely， the larger the obliquity and the wider and shallower the canal， the greater the vertical frost heave at the bottom of canal. The frost heave property of foundation soil and strength and thickness of concrete lining have a great effect on the frost heave resistance of canal. For loam soil， it is appropriate to choose 0.07m thick lining， 10° obliquity， and for silt soil， choose 0.08m thick lining， 13° obliquity.

Key words: U-shaped canal, mechanical model, numerical simulation, frost heave

中图分类号:

王玉宝，王亮，程森浩，胡战峰. 整体式U形渠道不同断面结构抗冻胀性研究[J]. 东北大学学报:自然科学版, 2020, 41(9): 1341-1347.

WANG Yu-bao， WANG Liang， CHENG Sen-hao， HU Zhan-feng. Study on Frost Heave Resistance of Different Section Structures of U-Shaped Canal[J]. Journal of Northeastern University Natural Science, 2020, 41(9): 1341-1347.

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整体式U形渠道不同断面结构抗冻胀性研究

Study on Frost Heave Resistance of Different Section Structures of U-Shaped Canal

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