不同小主应力和负温条件下冻结粉质黏土平面应变试验研究

doi:10.13722/j.cnki.jrme.2023.0475

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1267 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要针对冻结法施工中的平面应变问题，利用改进的安徽理工大学冻土真三轴仪进行平面应变试验，分析冻结粉质黏土在不同小主应力和负温条件下的强度和变形特性，建立基于Weibull分布和Drucker-Prager强度准则的冻结粉质黏土损伤本构模型。理论和试验结果表明：同一温度下，不同小主应力下的应力–应变曲线呈现不同程度的硬化特征。破坏强度随小主应力的增加表现出先增后减的规律，随温度的降低呈线性增长的趋势。建立的非线性莫尔–库仑强度准则可以近似描述冻结粉质黏土的强度随小主应力增大而呈现出的非线性变化特征。不同试验条件下小主应力方向的应变均为膨胀变形，体应变均呈现剪缩的特性。随着小主应力的增大，试样的变形模量呈现先增后减的趋势；当小主应力相同时，其值随温度的降低而增大。当温度相同时，破坏时的中主应力随小主应力的增大同样表现出先增后减的趋势。建立的损伤本构模型可以较好地反映复杂应力路径下小主应力和温度对冻结粉质黏土强度和变形特性的影响。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	马芹永1
	2
	3
	张鸿朋1
	2
	3
	黄坤4
	马冬冬1
	2
	3
	姚兆明1
	2
	3
	吴飞1
	2
	3

关键词 ：土力学, 冻结粉质黏土, 力学性能, 平面应变, 强度准则, 损伤本构模型

Abstract：Aiming at the plane strain problem in freezing method construction，the plane strain tests were carried out by using the improved true triaxial apparatus of frozen soil in Anhui University of Science and Technology. Subsequently，the strength and deformation of frozen silty clay were analyzed under different principal stresses and temperatures. Based on Weibull distribution and Drucker-Prager strength criterion，a damage constitutive model was established for frozen silty clay. The theoretical and experimental results demonstrate that the stress-strain curves under different minor principal stress exhibit different degrees of hardening characteristics at the same negative temperature. The failure strength increases first and then decreases with the increase of the minor principal stress，while it increases linearly with decreasing temperature. The established nonlinear Mohr-Coulomb strength criterion can describe the nonlinear correlation between the strength of frozen silty clay and the minor principal stress. Under different test conditions，the strain along the minor principal stress is expansion deformation，and the volume strain exhibits shear contraction. As the minor principal stress increases，the deformation modulus of the sample increases first and then decreases. For the same minor principal stress，the deformation modulus exhibits a negative correlation with temperature. Under the same temperature，the intermediate principal stress at failure also increases first and then decreases with increasing minor principal stress. The performed analysis revealed that the established damage constitutive model effectively considers the influence of minor principal stress and temperature on the strength and deformation of frozen silty clay under complex stresses.

Key words： soil mechanics frozen silty clay mechanical properties plane strain strength criterion damage constitutive model

引用本文:

马芹永1，2，3，张鸿朋1，2，3，黄坤4，马冬冬1，2，3，姚兆明1，2，3，吴飞1，2，3. 不同小主应力和负温条件下冻结粉质黏土平面应变试验研究[J]. 岩石力学与工程学报, 2024, 43(3): 768-780.
MA Qinyong1，2，3，ZHANG Hongpeng1，2，3，HUANG Kun4，MA Dongdong1，2，3，YAO Zhaoming1，2，3，WU Fei1，2，3. Experimental study on plane strain of frozen silty clay under different minor principal stresses and negative temperatures. , 2024, 43(3): 768-780.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.0475 或 http://rockmech.whrsm.ac.cn/CN/Y2024/V43/I3/768

[3]	杨更社，屈永龙，奚家米. 白垩系地层煤矿立井冻结壁的力学特性及温度场研究[J]. 岩石力学与工程学报，2014，33(9)：1 873-1 879. (YANG Gengshe，QU Yonglong，XI Jiami. Study of mechanical properties and temperature field of frozen wall in cretaceous strata[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1 873-1 879.(in Chinese))
[5]	张博，杨维好，蒋成. 考虑井帮收敛的深冻结壁弹塑性设计方法[J]. 采矿与安全工程学报，2023，40(1)：112-119.(ZHANG Bo，YANG Weihao，JIANG Cheng. An elastoplastic design method for deep frozen wall considering shaft-flank displacement convergence[J]. Journal of Mining and Safety Engineering，2023，40(1)：112-119.(in Chinese))
[8]	WANG B X，XU X T，WANG X S，et al. Mechanical behavior and strength criterion of frozen silty clay under complex stress paths[J]. Geoderma，2023，435：116506.
[12]	姜景山，左永振，程展林，等. 应力状态对粗粒料力学特性影响的大型真三轴试验[J] .岩土力学，2020，41(11)：3 563-3 572.(JIANG Jingshan，ZUO Yongzhen，CHENG Zhanlin，et al. Effects of stress state on mechanical properties of coarse granular material using large-scale true triaxial tests[J]. Rock and Soil Mechanics，2020，41(11)：3 563-3 572.(in Chinese))
[14]	牛亚强，赖远明，王旭，等. 冻结粉质黏土三轴抗压强度和变形特性试验研究[J]. 冰川冻土，2016，38(2)：424-430.(NIU Yaqiang，LAI Yuanming，WANG Xu，et al. Experimental study on triaxial compressive strength and deformation behaviors of frozen silty clay[J]. Journal of Glaciology and Geocryology，2016，38(2)：424-430.(in Chinese))
[17]	马芹永，黄坤，马冬冬，等. 不同中主应力系数和负温条件下冻结砂土真三轴试验研究[J]. 岩土工程学报，2022，44(5)：870-878. (MA Qinyong，HUANG Kun，MA Dongdong，et al. True triaxial tests on frozen sandy soil under different intermediate principal stress coefficients and negative temperatures[J]. Chinese Journal of Geotechnical Engineering，2022，44(5)：870-878.(in Chinese))
[21]	吴旭阳，梁庆国，牛富俊，等. 黄土剪切应变硬化-软化分类试验研究[J]. 地下空间与工程学报，2017，13(6)：1 457-1 466.(WU Xuyang，LIANG Qingguo，NIU Fujun，et al. Study on hardened and softened classification in shear test[J]. Chinese Journal of Underground Space and Engineering，2017，13(6)：1 457-1 466.(in Chinese))
[27]	LEMAITRE J. How to use damage mechanics[J]. Nuclear Engineering and Design，1984，80(2)：233-245.
[7]	NI P P，MEI G X，ZHAO Y L，et al. Plane strain evaluation of stress paths for supported excavations under lateral loading and unloading[J]. Soils and Foundations，2018，58(1)：146-159.
[1]	马芹永. 多年冻土和人工冻土的爆破试验与方法研究[J]. 土木工程学报，2004，37(9)：75-78.(MA Qinyong. A study on blasting tests and methods for permafrost and artificially frozen soils[J]. China Civil Engineering Journal，2004，37(9)：75-78.(in Chinese))
[2]	鲁先龙，陈湘生，陈曦. 人工地层冻结法风险预控[J]. 岩土工程学报，2021，43(12)：2 308-2 314.(LU Xianlong，CHEN Xiangsheng，CHEN Xi. Risk prevention and control of artificial ground freezing(AGF)[J]. Chinese Journal of Geotechnical Engineering，2021，43(12)：2 308-2 314.(in Chinese))
[4]	范长新，温智，王旭，等. 人工冻结法调控多年冻土区桩基础地温场的效果分析[J]. 中国安全生产科学技术，2022，18(8)：106-113.(FAN Changxin，WEN Zhi，WANG Xu，et al. Effect analysis of artificial freezing method to regulate ground temperature field of pile foundation in permafrost regions[J]. Journal of Safety Science and Technology，2022，18(8)：106-113.(in Chinese))
[6]	郜新军，李铭远，张景伟，等. 富水粉质黏土中地铁联络通道冻结法试验研究[J]. 岩石力学与工程学报，2021，40(6)：1 267-1 276. (GAO Xinjun，LI Mingyuan，ZHANG Jingwei，et al. Field research on artificial freezing of subway cross passages in water-rich silty clay layers[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(6)：1 267-1 276.(in Chinese))
[9]	陈敦，马巍，王大雁，等. 定向剪切应力路径下冻结黏土变形特性试验[J]. 岩土力学，2018，39(7)：2 483-2 490.(CHEN Dun，MA Wei，WANG Dayan，et al. Experimental study of deformation characteristics of frozen clay under directional shear stress path[J]. Rock and Soil Mechanics，2018，39(7)：2 483-2 490.(in Chinese))
[10]	潘家军，程展林，余挺，等. 不同中主应力条件下粗粒土应力变形特性试验研究[J]. 岩土工程学报，2016，38(11)：2 078-2 084. (PAN Jiajun，CHENG Zhanlin，YU Ting，et al. Experimental study on stress-strain characteristics of coarse-grained soil under different intermediate principal stresses[J]. Chinese Journal of Geotechnical Engineering，2016，38(11)：2 078-2 084.(in Chinese))
[11]	张玉，邵生俊. 平面应变条件下黄土的竖向加载变形与强度特性分析[J]. 土木工程学报，2016，49(3)：112-121.(ZHANG Yu，SHAO Shengjun. An analysis of vertical loading deformation and strength characteristics of loess under plain strain condition[J]. China Civil Engineering Journal，2016，49(3)：112-121.(in Chinese))
[13]	徐湘田，白瑞强，赖远明，等. 含盐冻结粉质砂土力学性质的试验研究[J]. 煤炭学报，2016，41(4)：836-842.(XU Xiangtian，BAI Ruiqiang，LAI Yuanming，et al. Experimental study on mechanical properties of saline frozen silty sand[J]. Journal of China Coal Society，2016，41(4)：836-842.(in Chinese))
[15]	张德，刘恩龙，刘星炎，等. 基于修正Mohr-Coulomb屈服准则的冻结砂土损伤本构模型[J]. 岩石力学与工程学报，2018，37(4)：978-986.(ZHANG De，LIU Enlong，LIU Xingyan，et al. A damage constitutive model for frozen sandy soils based on modified Mohr-Coulomb yield criterion[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(4)：978-986.(in Chinese))
[18]	姚兆明，付祥宾，李南. 冻结饱和砂土真三轴试验及本构模型研究[J]. 安徽理工大学学报：自然科学版，2022，42(3)：1-9.(YAO Zhaoming，FU Xiangbin，LI Nan. True triaxial test and constitutive model of frozen saturated sand[J]. Journal of Anhui University of Science and Technology：Natural Science，2022，42(3)：1-9.(in Chinese))
[19]	中华人民共和国行业标准编写组. JGJ/T 50123－2019土工试验方法标准[S]. 北京：中国计划出版社，2019.(The Professional Standards Compilation Group of People?s Republic of China. JGJ/T 50123－2019 Standard for geotechnical testing method[S]. Beijing：China Planning Press，2019.(in Chinese))
[20]	HUANG K，MA Q Y，MA D D，et al. Strength and deformation properties of frozen sand under a true triaxial stress condition[J]. Soils and Foundations，2022，62(1)：101089.
[16]	姚兆明，余文，麻世垄，等. 冻结黏土单轴抗压试验及损伤本构模型分析[J]. 力学与实践，2020，42(2)：196-201.(YAO Zhaoming，YU Wen，MA Shilong，et al. Uniaxial compression test and damage constitutive model for analysis of frozen clay[J]. Mechanics in Engineering，2020，42(2)：196-201.(in Chinese))
[22]	牛亚强，赖远明，王旭，等. 初始含水率对冻结粉质黏土变形和强度的影响规律研究[J]. 岩土力学，2016，37(2)：499-506.(NIU Yaqiang，LAI Yuanming，WANG Xu，et al. Research on influences of initial water content on deformation and strength behaviors of frozen silty clay[J]. Rock and Soil Mechanics，2016，37(2)：499-506.(in Chinese))
[25]	孙义强，孟上九，王淼，等. 负温和初始含水率对冻结粉质黏土力学性质的影响[J]. 应用基础与工程科学学报，2021，29(1)：193-205.(SUN Yiqiang，MENG Shangjiu，WANG Miao，et al. Effects of negative temperature and initial moisture content on mechanical properties of frozen silty clay[J]. Journal of Basic Science and Engineering，2021，29(1)：193-205.(in Chinese))
[28]	梁明纯，苗胜军，蔡美峰，等. 考虑剪胀特性和峰后形态的岩石损伤本构模型[J]. 岩石力学与工程学报，2021，40(12)：2 392- 2 401.(LIANG Mingchun，MIAO Shengjun，CAI Meifeng，et al. A damage constitutive model of rock with consideration of dilatation and post peak shape of the stress-strain curve[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(12)：2 392-2 401. (in Chinese))
[29]	杜宇翔，盛谦，付晓东，等. 半成岩变形强度特征与损伤本构模型研究[J]. 岩石力学与工程学报，2020，39(2)：239-250.(DU Yuxiang，SHENG Qian，FU Xiaodong，et al. Study on deformation and strength characteristics and damage constitutive model of semi-diagenetic rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(2)：239-250.(in Chinese))
[31]	曹文贵，赵明华，刘成学. 基于Weibull分布的岩石损伤软化模型及其修正方法研究[J]. 岩石力学与工程学报，2004，23(19)：3 226- 3 231.(CAO Wengui，ZHAO Minghua，LIU Chengxue. Study on the model and its modifying method for rock softening and damage based on Weibull random distribution[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 226-3 231.(in Chinese))
[23]	中华人民共和国行业标准编写组. MT/T 593.5—2011人工冻土物理力学性能试验第5部分：人工冻土三轴剪切强度试验方法[S]. 北京：煤炭工业出版社，2011.(The Professional Standards Compilation Group of People?s Republic of China. MT/T 593.5—2011 Physical and mechanical properties test of artificial frozen soil Part 5：Triaxial shear strength test method of artificial frozen soil[S]. Beijing：China Coal Industry Publishing House，2011.(in Chinese))
[24]	陈昌富，韦思琦，蔡焕. 温度变化对水泥土力学性能的影响[J]. 铁道科学与工程学报，2023，20(1)：190-199.(CHEN Changfu，WEI Siqi，CAI Huan. Effect of temperature change on mechanical properties of cement soil[J]. Journal of Railway Science and Engineering，2023，20(1)：190-199.(in Chinese))
[26]	张鸿朋，马芹永，黄坤，等. 冻结砂不同应力路径三轴试验强度和变形分析[J]. 岩土力学，2023，44(5)：1 477-1 486.(ZHANG Hongpeng，MA Qinyong，HUANG Kun，et al. Strength and deformation analysis of frozen sand under different stress paths using the triaxial test[J]. Rock and Soil Mechanics，2023，44(5)：1 477-1 486.(in Chinese))
[30]	曹文贵，赵明华，唐学军. 岩石破裂过程的统计损伤模拟研究[J]. 岩土工程学报，2003，25(2)：184-187.(CAO Wengui，ZHAO Minghua，TANG Xuejun. Study on simulation of statistical damage in the full process of rock failure[J]. Chinese Journal of Geotechnical Engineering，2003，25(2)：184-187.(in Chinese))