考虑冰膜厚度的桩–土界面剪切特性及冻拔计算

doi:10.13722/j.cnki.jrme.2022.1318

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摘要冻土–桩基接触界面的剪切力学行为是冻土区桩基冻拔计算模型建立的重要依据。开展一系列不同界面冰膜厚度的冻结砂土–混凝土负温直剪试验，分析冰膜厚度对界面剪切力学变形特性的影响，结合多元回归方法建立多因素影响的三折线剪切本构模型。基于剪切位移法，引入三折线剪切本构模型，构建季节性冻土地基单向冻结过程中单桩冻拔效应的理论计算模型，并进行算例分析。研究表明：冰膜厚度对界面的剪切行为影响显著，峰值剪切强度及残余剪切强度与冰膜厚度的关系可近似为双曲线函数关系；构建的剪切本构模型可较好地反映界面温度、法向应力及冰膜厚度对冻土–混凝土界面剪切行为的影响；桩周土体冻结过程中部分桩土界面会产生滑移，切向冻胀力的峰值位置随冻深的发展而下移；冰膜厚度对桩基的冻拔效应影响显著，冻拔力随冻胀率的增大并非呈线性增大，主要受桩土界面剪切强度的影响。

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	周亚龙1
	2
	王旭1
	3
	蒋代军1
	刘德仁1
	何菲1
	胡渊1
	刘平1

关键词 ：桩基础, 冻土&ndash, 混凝土界面, 冰膜, 直剪试验, 剪切本构模型, 切向冻胀力

Abstract：The shear behavior of the contact interface between frozen soil and pile is an important basis for establishing the frost jacking calculation model of piles in frozen soil regions. A series of negative temperature direct shear tests of frozen sand soil and concrete with different ice film thickness at the contact interface were carried out to analyze the influence of the ice film thickness on the shear mechanical deformation characteristics of the interface. Combined with multiple regression method，a trilinear shear constitutive model with multiple factors was established. Based on the shear-displacement method，the trilinear shear constitutive model is introduced to establish a theoretical calculation model for the frost jacking behaviour of single pile during the process of unidirectional freezing of seasonal frozen soil，and an example is analyzed. The results show that the ice film thickness has a significant effect on the shear behavior of the interface，and the relationship between the peak shear strength and the residual shear strength and the ice film thickness can be approximated as hyperbolic functions. The shear constitutive model can better reflect the effects of interface temperature，normal stress and ice film thickness on the shear behavior of frozen soil-concrete interface. Some pile-soil interface will slip during the freezing process of the soil around pile，and the peak position of tangential frost heaving force moves downward with the development of frost depth. The thickness of ice film has significant influence on the frost jacking effect of pile foundation. The frost jacking force does not increase linearly with the increase of frost heaving ratio，which is mainly affected by the shear strength between pile and frozen soil.

Key words： pile foundation frozen soil-concrete interface ice film direct shear test shear constitutive model tangential frost-heave stress

引用本文:

周亚龙1，2，王旭1，3，蒋代军1，刘德仁1，何菲1，胡渊1，刘平1. 考虑冰膜厚度的桩–土界面剪切特性及冻拔计算[J]. 岩石力学与工程学报, 2023, 42(11): 2806-2819.
ZHOU Yalong1，2，WANG Xu1，3，JIANG Daijun1，LIU Deren1，HE Fei1，HU Yuan1，LIU Ping1. Shear behavior of pile-soil interface considering ice film thickness and frost jacking calculation of piles in frozen soil regions. , 2023, 42(11): 2806-2819.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2022.1318 或 http://rockmech.whrsm.ac.cn/CN/Y2023/V42/I11/2806

[2]	马巍，王大雁. 冻土力学[M]. 北京：科学出版社，2014：286- 302.(MA Wei，WANG Dayan. Frozen soil mechanics[M]. Beijing：Science Press，2014：286-302.(in Chinese))
[25]	ANDERSLAND O B，ANDERSON D M. Geotechnical engineering for cold regions[M]. New York：McGraw-Hill College，1978：1-66.
[7]	LIU J K，LV P，CUI Y H，et al. Experimental study on direct shear behavior of frozen soil-concrete interface[J]. Cold Regions Science and Technology，2014；104：1-6.
[1]	徐斆祖，王家澄，张立新. 冻土物理学[M]. 北京：科学出版社，2001：1-2.(XU Xiaozu，WANG Jiacheng，ZHANG Lixin. Freezing and frozen soil physics[M]. Beijing：Science Press，2001：1-2.(in Chinese))
[11]	杨平，赵联桢，王国良. 冻土与结构接触面循环剪切损伤模型[J]. 岩土力学，2016，37(5)：1 217-1 223.(YANG Ping，ZHAO Lianzhen，WANG Guoliang. A damage model for frozen soil-structure interface under cyclic shearing[J]. Rock and Soil Mechanics，2016，37(5)： 1 217-1 223.(in Chinese))
[21]	何菲，王旭，蒋代军，等. 正冻粉质黏土与介质间冰膜形成机制的试验研究[J]. 地下空间与工程学报，2016，12(3)：698-704. (HE Fei，WANG Xu，JIANG Daijun，et al. Experimental research on the formation mechanism of ice film between freezing silty clay and different mediums[J]. Chinese Journal of Underground Space and Engineering，2016，12(3)：698-704.(in Chinese))
[30]	戴惠民，田德廷. 切向冻胀力及其对桩基的作用[J]. 桥梁建设，1986，(4)：46-55.(DAI Huimin，TIAN Deting. Tangential frost heave force and its effect on pile foundation[J]. Bridge Construction，1986，(4)：46-55.(in Chinese))
[31]	崔托维奇 H A. 冻土力学[M]. 张长庆，朱元林，译. 北京：科学出版社，1985：1-28.(TRITOVICH H A. Mechanics of frozen soil[M]. Translated by ZHANG Changqing and ZHU Yuanlin. Beijing：Science Press，1985：1-28.(in Chinese))
[3]	陈肖柏，刘建坤. 土的冻结作用与地基[M]. 北京：科学出版社，2006：442-468.(CHEN Xiaobo，LIU Jiankun. Frost action of soil and foundation engineering[M]. Beijing：Science Press；2006：442- 468.(in Chinese))
[5]	何鹏飞，马巍，穆彦虎，等. 冻土-混凝土界面冻结强度特征与形成机制研究[J]. 农业工程学报，2018，34(23)：127-133.(HE Pengfei，MA Wei，MU Yanhu，et al. Study on freezing strength characteristics and formation mechanism of frozen soil-concrete interface[J]. Transactions of the Chinese Society of Agricultural Engineering，2018，34(23)：127-133.(in Chinese))
[8]	吕鹏，刘建坤. 冻土与混凝土接触面直剪试验研究[J]. 铁道学报，2015，(2)：106-110.(LV Peng，LIU Jiankun. An experiment study on direct shear tests of frozen soil-concert interface[J]. Journal of the China Railway Society，2015，(2)：106-110.(in Chinese))
[10]	温智，俞祁浩，张建明，等. 青藏直流输变电工程基础冻结强度试验研究[J]. 岩土工程学报，2013，35(12)：2 262-2 267.(WEN Zhi，YU Qihao，ZHANG Jianming，et al. Experimental study on adfreezing bond strength of interface between silt and foundation of Qinghai—Tibetan transmission line[J]. Chinese Journal of Geotechnical Engineering，2013，35(12)：2 262-2 267.(in Chinese))
[13]	石泉彬，杨平，王国良. 人工冻结砂土与结构接触面冻结强度试验研究[J]. 岩石力学与工程学报，2016，35(10)：2 142-2 151.(SHI Quanbin，YANG Ping，WANG Guoliang. Experimental study on adfreezing strength of the interface between artificial frozen sand and structure[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(10)：2 142-2 151.(in Chinese))
[15]	SUN T，GAO X，LIAO Y，et al. Experimental study on adfreezing strength at the interface between silt and concrete[J]. Cold Regions Science and Technology，2021，190：103346.
[17]	何鹏飞，马巍，穆彦虎，等. 冻融循环对冻土-混凝土界面冻结强度影响的试验研究[J]. 岩土工程学报，2020，42(2)：299-307.(HE Pengfei，MA Wei，MU Yanhu，et al. Experiment study on effects of freeze-thaw cycles on adfreezing strength at frozen soil-concrete interface[J]. Chinese Journal of Geotechnical Engineering，2020，42(2)：299-307.(in Chinese))
[18]	张琪，张建明，张斌，等. 高温冻土-现浇混凝土接触面影响因素及本构模型[J]. 中南大学学报：自然科学版，2022，53(8)： 3 021-3 030.(ZHANG Qi，ZHANG Jianming，ZHANG Bin，et al. Influencing factors and constitutive model of interface between warm frozen soil and cast-in-place concrete[J]. Journal of Central South University：Science and Technology，2022，53(8)：3 021-3 030.(in Chinese))
[20]	石泉彬，杨平. 冻结粉细砂与钢板接触面剪切统计损伤模型构建[J]. 铁道科学与工程学报，2021，18(10)：2 591-2 599.(SHI Quanbin，YANG Ping. Construction of statistical shear damage model at the interface between frozen fine sand and steel plate[J]. Journal of Railway Science and Engineering，2021，18(10)：2 591-2 599.(in Chinese))
[23]	WANG T，LIU J，TAI B，et al. Frost jacking characteristics of screw piles in seasonally frozen regions based on thermo-mechanical simulations[J]. Computers and Geotechnics，2017，91：27-38.
[27]	张乾青，张忠苗. 抗拔单桩受力性状的解析算法[J]. 岩土工程学报，2011，33(2)：308-313.(ZHANG Qianqing，ZHANG Zhongmiao. Analytical prediction approach for response of single pile under tension[J]. Chinese Journal of Geotechnical Engineering，2011，33(2)：308-313.(in Chinese))
[28]	江杰，侯凯文，欧孝夺，等. 膨胀土地基中单桩承载特性非线性分析[J]. 应用基础与工程科学学报，2021，29(3)：741-751.(JIANG Jie，HOU Kaiwen，OU Xiaoduo，et al. Nonlinear analysis of bearing characteristics of single pile in expansive soil[J]. Journal of Basic Science and Engineering，2021，29(3)：741-751.(in Chinese))
[4]	GUO L，XIE Y，YU Q，et al. Displacements of tower foundations in permafrost regions along the Qinghai—Tibet power transmission line[J]. Cold Regions Science and Technology，2016，121：187- 195.
[6]	周亚龙，郭春香，王旭，等. 基于热棒功率变化下多年冻土区输电塔热棒桩基的长期降温效果预测[J]. 岩石力学与工程学报，2019，38(7)：1 461-1 469.(ZHOU Yalong，GUO Chunxiang，WANG Xu，et al. Prediction of long-term cooling effect of thermal pipe foundation of transmission tower in permafrost regions considering the change of thermal pipe power[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(7)：1 461-1 469.(in Chinese))
[9]	温智，俞祁浩，马巍，等. 青藏粉土-玻璃钢接触面力学特性直剪试验研究[J]. 岩土力学，2013，34(增2)：45-50.(WEN Zhi，YU Qihao，MA Wei，et al. Direct shear tests for mechanical characteristics of interface between Qinghai—Tibetan silt and fiberglass reinforced plastics[J]. Rock and Soil Mechanics，2013，34(Supp.2)：45-50.(in Chinese))
[19]	ZHANG Q，ZHANG J，WANG H，et al. Mechanical behavior and constitutive relation of the interface between warm frozen silt and cemented soil[J]. Transportation Geotechnics，2021，30：100624.
[29]	童长江，管枫年. 土的冻胀与建筑物冻害防治[M]. 北京：水利电力出版社，1985：3-70.(TONG Changjiang，GUAN Fengnian. Soil frost heave and building frost damage prevention[M]. Beijing：Water Resources and Electric Power Press，1985：3-70.(in Chinese))
[12]	孙厚超，杨平，王国良. 冻土与结构接触界面层力学试验系统研制及应用[J]. 岩土力学，2014，35(12)：3 636-3 641.(SUN Houchao，YANG Ping，WANG Guoliang. Development of mechanical experimental system for interface layer between frozen soil and structure and its application[J]. Rock and Soil Mechanics，2014，35(12)：3 636- 3 641.(in Chinese))
[16]	孙兆辉，卞汉兵，王宸宇，等. 粉质黏土-混凝土衬砌接触面冻结强度影响因素显著性分析[J]. 冰川冻土，2020，42(2)：508-514. (SUN Zhaohui，BIAN Hanbing，WANG Chenyu，et al. Significance analysis of factors of freezing strength between silty clay and concrete lining[J]. Journal of Glaciology and Geocryology，2020，42(2)：508-514.(in Chinese))
[26]	刘鸿绪. 对切向冻胀力沿桩侧表面分布的探讨[J]. 冰川冻土，1993，(2)：289-292.(LIU Hongxu. Discussion on the distribution of tangential frost heaving force along the pile side surface[J]. Journal of Glaciology and Geocryology，1993，(2)：289-292.(in Chinese))
[14]	孙铁成，高晓静，岳祖润，等. 粉土-混凝土接触面冻结强度试验研究[J]. 岩石力学与工程学报，2020，39(5)：1 032-1 039.(SUN Tiecheng，GAO Xiaojing，YUE Zurun，et al. Experimental study on the adfreezing strength of the interface between silt and concrete[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(5)：1 032-1 039.(in Chinese))
[22]	冯大阔，侯文峻，张建民，等. 不同法向边界条件接触面三维力学特性的试验研究[J]. 岩土力学，2010，31(8)：2 419-2 424.(FENG Dakuo，HOU Wenjun，ZHANG Jianmin，et al. Experimental study of 3D cyclic behavior of interface under different normal boundary conditions[J]. Rock and Soil Mechanics，2010，31(8)：2 419-2 424. (in Chinese))
[24]	ZHOU Y L，WANG X，NIU F，et al. Frost jacking characteristics of transmission tower pile foundations with and without thermosyphons in permafrost regions of Qinghai—Tibet plateau[J]. Journal of Cold Regions Engineering，2021，35(2)：04021004.
[32]	张明礼，温智，薛珂，等. 青藏铁路多年冻土区润湿地段斜坡路基温度与变形分析[J]. 岩石力学与工程学报，2016，35(8)： 1 677-1 687.(ZHANG Mingli，WEN Zhi，XUE Ke，et al. Temperature and deformation analysis on slope subgrade with rich moisture of Qinghai—Tibet railway in permafrost regions[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(8)：1 677-1 687.(in Chinese))