刘政;申向东;薛慧君;王仁远;刘倩;韩超;

• 1:内蒙古农业大学水利与土木建筑工程学院

摘要(Abstract)：

通过室内冻结试验,研究渠道混凝土衬砌与渠床基土两材料相互接触界面的温度变化,分析试验结果可知界面温度时程变化可划分为3个阶段:急速阶段、缓慢阶段和平稳阶段。结合材料力学、冻土力学等理论,利用温度场、温度梯度和温度应力计算公式得出界面温度应力变化特性。在冷端温度降低过程初期,混凝土内部温度变化较基土更为敏感;界面温度达-12℃时,界面温度应力的增速由快变慢且存在转折点,该转折点使温度应力对界面的破坏速率减慢,温度应力大于0.4MPa时会对界面有破坏效应;界面温度达-15℃时,应力达到最大值。室内冻结试验与灌区渠道冻胀变化趋势基本一致,具有实践应用价值。

关键词(KeyWords)： 界面;温度场;温度梯度;温度应力;渠道混凝土

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51569021,51769025)

作者(Author): 刘政;申向东;薛慧君;王仁远;刘倩;韩超;

Email:

DOI:

参考文献(References)：

• [1]戈雪良,苏文德,陆采荣.气候变化条件下水工混凝土的抗冻性能[J].水利水电科技进展,2015,35(6):37-40.GE Xueliang,SU Wende,LU Cairong.Frost resistance properties of hydraulic concrete under climate change conditions[J].Advances in Science and Technology of Water Resources,2015,35(6):37-40.(in Chinese)
• [2]郑郧,马巍,邴慧.冻融循环对土结构性影响的机理与定量研究方法[J].冰川冻土,2015,37(1):132-137.ZHENG Yun,MA Wei,BING Hui.Impact of freezing and thawing cycles on the structures of soil and a quantitative approach[J].Journal of Glaciology and Geocryology,2015,37(1):132-137.(in Chinese)
• [3]王正中.梯形渠道砼衬砌冻胀破坏的力学模型研究[J].农业工程学报,2004,20(3):24-29.WANG Zhengzhong.Establishment and application of mechanics models of frost heaving damage of concrete lining trapezoidal open canal[J].Transactions of the Chinese Society of Agricultural Engineering,2004,20(3):24-29.(in Chinese)
• [4]宁建国,王慧,朱志武,等.基于细观力学方法的冻土本构模型研究[J].北京理工大学学报,2005,25(10):847-851.NING Jianguo,WANG Hui,ZHU Zhiwu,et al.Investigation of the constitutive modle of frozen soil based on meso-mechanics[J].Transactions of Beijing Institute of Technology,2005,25(10):847-851.(in Chinese)
• [5]何平,程国栋,俞祁浩,等.饱和正冻土中的水、热、力场耦合模型[J].冰川冻土,2000,22(2):135-138.HE Ping,CHENG Guodong,YU Qihao,et al.A couple model of heat,water and stress fields of saturated soil during freezing[J].Journal of Glaciology and Geocryology,2000,22(2):135-138.(in Chinese)
• [6]蔡中民,朱元林,张长庆.冻土的黏弹塑性本构模型以及材料参数的确定[J].冰川冻土,1990,12(1):31-40.CAI Zhongmin,ZHU Yuanlin,ZHANG Changqing.Viscoelastoplastic constitutive model of frozen soil and determination of its parameters[J].Journal of Glaciology and Geocryology,1990,12(1):31-40.(in Chinese)
• [7]申向东,张玉佩,王丽萍.混凝土预制板衬砌梯形断面渠道的冻胀破坏受力分析[J].农业工程学报,2012,28(16):80-85.SHEN Xiangdong,ZHANG Yupei,WANG Liping.Stress analysis of frost heave for precast concrete panel lining trapezoidal cross-section channel[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(16):80-85.(in Chinese)
• [8]赖远明,刘松玉,邓学钧,等.寒区大坝温度场和渗流场耦合问题的非线性数值模拟[J].水利学报,2001(8):26-31.LAI Yuanming,LIU Songyu,DENG Xuejun,et al.Numerical simulation for the coupled problem of temperature and seepage fields in dams located in cold area[J].Journal of Hydraulic Engineering,2001(8):26-31.(in Chinese)
• [9]刘雄,宁建国,马巍.冻土地区水渠的温度场和应力场数值分析[J].冰川冻土,2005,27(6):932-938.LIU Xiong,NING Jianguo,MA Wei.Numerical analysis of temperature field and stress field in permafrost regions[J].Journal of Glaciology and Geocryology,2005,27(6):932-938.(in Chinese)
• [10]GB175—2007.通用硅酸盐水泥[S].北京:中国标准出版社,2007.GB175-2007.Common portland cement[S].Beijing:China Standards Press,2005.(in Chinese)
• [11]GB/T 50123—2002.土工试验方法标准[S].北京:中国计划出版社,2002.GB/T 50123-2002.Standard for soil test method[S].Beijing:China Planning Press,2002.(in Chinese)
• [12]张泽,马巍,齐吉琳.冻融循环作用下土体结构演化规律及其工程性质改变机理张泽[J].吉林大学学报(地球科学版),2013,43(6):1904-1914.ZHANG Ze,MA Wei,QI Jilin.Structure evolution and mechanism of engineering properties change of soils under effect of freeze-thaw cycle[J].Journal of Jilin University(Earth Science Edition),2013,43(6):1904-1914.(in Chinese)
• [13]唐益群,洪军,杨坪,等.人工冻结作用下淤泥质黏土冻胀特性试验研究[J].岩土工程学报,2009,31(5):772-776.TANG Yiqun,HONG Jun,YANG Ping,et al.Experimental study on frost heave characteristics of mucky clay under artificial freezing[J].Journal of Geotechnical Engineering,2009,31(5):772-776.(in Chinese)
• [14]张宇,李东庆,明锋.冻融循环作用下土体冻结锋面移动规律试验研究[J].冰川冻土,2016,38(3):679-684.ZHANG Yu,LI Dongqing,MING Feng.Experimental study of the freezing front movement owing to freezingthawing cycles[J].Journal of Glaciology and Geocryology,2016,38(3):679-684.(in Chinese)
• [15]李东庆,周家作,张坤,等.土冻结过程中的水热力三场耦合数值分析[J].中国公路学报,2012,25(1):1-7.LI Dongqing,ZHOU Jiazuo,ZHANG Kun,et al.Modelling and numerical analysis of moisture,heat and stress in seasonal frozen soil[J].China Journal of Highway and Transport,2012,25(1):1-7.(in Chinese)
• [16]李洪升,杜小振.冰体材料损伤与断裂破坏的本构理论[J].冰川冻土,2003,25(S2):304-307.LI Hongsheng,DU Xiaozhen.Constitutive model of damage and fracture ofice[J].Journal of Glaciology and Geocryology,2003,25(S2):304-307.(in Chinese)
• [17]刘旭东,王正中,闫长城,等.基于数值模拟的双层薄膜防渗衬砌渠道抗冻胀机理探讨[J].农业工程学报,2011,27(1):29-35.LIU Xudong,WANG Zhengzhong,YAN Changcheng,et al.Exploration on anti-frost heave mechanism of lining canal with double films based on computer simulation[J].Transactions of the CSAE,2011,27(1):29-35.(in Chinese)