[1]刘 慧,杨更社,叶万军,等.冻融循环条件下原状黄土强度损伤试验研究[J].西安科技大学学报,2016,(05):633-639.[doi:10.13800/j.cnki.xakjdxxb.2016.0505]
 LIU Hui,YANG Geng-she,YE Wan-jun,et al.Experimental study on strength damage of undisturbed loess under freeze-thaw cycles condition[J].Journal of Xi'an University of Science and Technology,2016,(05):633-639.[doi:10.13800/j.cnki.xakjdxxb.2016.0505]
点击复制

冻融循环条件下原状黄土强度损伤试验研究(/HTML)
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2016年05期
页码:
633-639
栏目:
出版日期:
2016-09-30

文章信息/Info

Title:
Experimental study on strength damage of undisturbed loess under freeze-thaw cycles condition
文章编号:
1672-9315(2016)05-0633-07
作者:
刘 慧杨更社叶万军魏 尧田俊峰
西安科技大学 建筑与土木工程学院,陕西 西安 710054
Author(s):
LIU HuiYANG Geng-sheYE Wan-junWEI YaoTIAN Jun-feng
College of Civil and Architectural Engineering,Xi'an University of Science and Technology,Xi'an 710054,China
关键词:
黄土 冻融循环 损伤 弹性模量
Keywords:
loess freeze-thaw cycles damage modulus of elasticity
分类号:
P 642.14
DOI:
10.13800/j.cnki.xakjdxxb.2016.0505
文献标志码:
A
摘要:
受昼夜小周期及季节大周期交替气温循环作用的影响,黄土体的损伤对低温黄土工程建设的影响不可忽视。冻融循环过程对黄土体原生结构产生不可逆的改变,导致黄土物理力学性能劣化。开展阳曲高含水率黄土在冻融循环条件下的力学性能进行试验研究,通过分析黄土原生结构逐渐丧失和次生结构逐渐形成的过程,探讨了黄土体在加载和温度等因素作用下的变形发展规律,提出以冻融循环次数表示冻融损伤,用弹性模量定义损伤变量,描述冻融循环后黄土强度损伤演化。所提出的方法为正确评价黄土结构在冻融循环作用下损伤机理分析提供了科学依据。
Abstract:
Affected by alternating temperature cycling because of day and night cycle and seasonal cycle,loess engineering at low temperature will inevitably undergo problem of damage.Freezing and thawing cycles produce irreversible change in primary structure of loess.Moreover,it causes deterioration of physical and mechanical properties of loess.Experiment of loess with high water content was carried out to study its mechanical properties.By analysis the process of gradual loss of primary structure and formation of secondary structure,discussion on the development of deformation is done under the combined effect of freeze-thaw cycles and loads.It is proposed that freeze-thaw damage can represented in number of freeze-thaw cycles,and damage variable can defined by modulus of elasticity to describe damage evolution of loess strength.The method proposed in this paper provides scientific basis for damage mechanism analysis of structure of loess under the action of freezing and thawing cycles.

参考文献/References:

[1] 贾嘉陵,孙国富,邓 坤.湿陷性黄土地层二元结构本构模型[J].西安科技大学学报,2009,29(1):180-184. JIA Jia-ling,SUN Guo-fu,DENG Kun.Constitutive model of dualistic structure of collapsed loess[J].Journal of Xi'an University of Science and Technology,2009,29(1):180-184.
[2] 计 宏,余学义.厚黄土覆盖层采动破坏数值模拟研究[J].西安科技大学学报,2012,32(2):209-213. JI Hong,YU Xue-yi.Numerical simulation of surface subsidence in thick loess mining seam[J].Journal of Xi'an University of Science and Technology,2012,32(2):209-213.
[3] 方祥位,申春妮,李春海,等.陕西蒲城黄土微观结构特征及定量分析[J].岩石力学与工程学报,2013,32(9):1 917-1 925. FANG xiang-wei,SHEN chun-ni,LI chun-hai,et al.Quantitative analysis of microstructure characteristics of Pucheng loess in Shaanxi Province[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(9):1 917-1 925.
[4] 李识博,王常明,马建全,等.陇西黄土三轴剪切过程微观变化研究[J].岩土力学,2013,34(11):3 299-3 305. LI Shi-bo,WANG Chang-ming,MA Jian-quan,et al.Microscopic changes of Longxi loess during triaxial shear process[J].Rock and Soil Mechanics,2013,34(11):3 299-3 305.
[5] 方祥位,申春妮,汪 龙,等.Q2黄土浸水前后微观结构变化研究[J].岩土力学,2013,34(5):1 319-1 324. FANG Xiang-wei,SHEN Chun-ni,WANG Long,et al.Research on microstructure of Q2 loess before and after wetting[J].Rock and Soil Mechanics,2013,34(5):1 319-1 324.
[6] 张少华,苏楠楠,董晓强.不同固结压力作用下黄土微观结构试验研究[J].科学技术与工程,2015,15(31):74-78. ZHANG Shao-hua,SU Nan-nan,DONG Xiao-qiang.Microstructure test of loess under different consolidation pressures[J].Science Technology and Engineering,2015,15(31): 74-78.
[7] 方祥位,欧益希,李春海,等.浸湿对原状Q2黄土微观结构与力学性质的影响研究[J].岩土力学,2015,36(S2):111-117. FANG Xiang-wei,OU Yi-xi,LI Chun-hai,et al.Research on influence of soaking on microstructure and mechanical behavior of Q2 loess[J].Rock and Soil Mechanics,2015,36(S2):111-117.
[8] 宋彦辉,李忠生.长安地裂缝带黄土的微观结构特征研究[J].安全与环境工程,2012,19(6):17-21. SONG Yan-hui,LI Zhong-sheng.Research on the micro-texture characteristics of loess located in the ground fissure zone of Chang'an Area[J].Safety and Environmental Engineering,2012,19(6):17-21.
[9] 倪万魁,师华强.冻融循环作用对黄土微结构和强度的影响[J].冰川冻土,2014,36(4):922-927. NI Wan-kui,Shi hua-qiang.Influence of freezing-thawing cycles on microstructure and shear strength of loess[J].Journal of Glaciology and Geocryology,2014,36(4): 922-927.
[10]肖东辉,冯文杰,张 泽.冻融循环作用下黄土孔隙率变化规律[J].冰川冻土,2014,36(4): 907-912. XIAO Dong-hui,FENG Wen-jie,ZHANG Ze.The changing rule of loess's porosity under freezing-thawing cycles[J].Journal of Glaciology and Geocryology,2014,36(4): 907-912.
[11]叶万军,杨更社,郭西山.黄土边坡剥落病害的类型及其发育特征[J].西安科技大学学报,2010,30(1):52-57. YE Wan-jun,YANG Geng-she,GUO Xi-shan.Style of spalling hazard in loess slope and its develop characteristic[J].Journal of Xi'an University of Science and Technology,2010,30(1): 52-57.
[12]方祥位,陈正汉,申春妮,等.原状Q2黄土结构损伤演化的细观试验研究[J].水利学报,2008,39(8):940-946. FANG Xiang-wei,CHEN Zheng-han,SHEN Chun-ni,et al.Meso-testing research on structure damage evolution of natural Q2 loess[J].Journal of Hydraulic Engineering,2008,39(8):940-946.
[13]王朝阳,许 强,倪万魁,等.非饱和原状黄土的非线性损伤本构模型研究[J].岩土力学,2010,31(4):1 108-1 111. WANG Zhao-yang,XU Qiang,NI Wan-kui,et al.A nonlinear damage constitutive model of unsaturated undisturbed loess[J].Rock and Soil Mechanics,2010,31(4): 1 108-1 111.
[14]罗爱忠,邵生俊.结构性黄土损伤演化规律试验研究[J].太原理工大学学报,2011,42(1):79-41. LUO Ai-zhong,SHAO Sheng-jun.Study on structural damage of structural loess[J].Journal of Taiyuan University of Technology,2011,42(1):79-41.
[15]罗爱忠,邵生俊.湿载耦合作用下黄土结构性损伤演化及本构关系[J].岩石力学与工程学报,2012,31(4): 841-847. LUO Ai-zhong,SHAO Sheng-jun.Structural damage evolution and constitutive relation of loess under coupling of stress and moisture[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(4): 841-847.
[16]刘志彬,张 勇,方 伟,等.黄土电阻率与其压实特性间关系试验研究[J].西安科技大学学报,2013,33(1):84-90. LIU Zhi-bin,ZHANG Yong,FANG Wei,et al.Experimental research on relationship between electrical resistivity and compatibility of loess[J].Journal of Xi'an University of Science and Technology,2013,33(1): 84-90.
[17]徐湘田,赖远明,周志伟,等.循环与单调加载作用下冻结黄土的变形与损伤特性[J].冰川冻土,2014,36(5): 1 184-1 191. XU Xiang-tian,LAI Yuan-ming,ZHOU Zhi-wei,et al.Laboratory investigation on the deformation and damage characteristics of frozen loess under triaxial cyclic and monotonic loading conditions[J].Journal of Glaciology and Geocryology,2014,36(5):1 184-1 191.
[18]杨更社,魏 尧,田俊峰,等.冻融循环对结构性黄土构度指标影响研究[J].西安科技大学学报,2015,35(6): 675-681. YANG Geng-she,WEI Yao,TIAN Jun-feng,et al.Effect of the freeze-thaw cycles on structural loess structure index[J].Journal of Xi'an University of Science and Technology,2015,35(6):675-681.

相似文献/References:

[1]邱继生,王民煌,关 虓,等.钢纤维煤矸石混凝土冻融后本构关系试验研究[J].西安科技大学学报,2018,(05):743.[doi:10.13800/j.cnki.xakjdxxb.2018.0508]
 QIU Ji-sheng,WANG Min-huang,GUAN Xiao,et al.Experimental study on constitutive relationship after freeze-thaw of steel fiber gangue concrete[J].Journal of Xi'an University of Science and Technology,2018,(05):743.[doi:10.13800/j.cnki.xakjdxxb.2018.0508]
[2]贾嘉陵,孙国富,邓 坤.湿陷性黄土地层二元结构本构模型[J].西安科技大学学报,2009,(02):180.
 JIA Jia-ling,SUN Guo-fu,DENG Kun.Constitutive model of dualistic structure of collapsed loess[J].Journal of Xi'an University of Science and Technology,2009,(05):180.
[3]张慧梅,杨更社.岩石冻融循环及抗拉特性试验研究[J].西安科技大学学报,2012,(06):691.
 ZHANG Hui-mei,YANG Geng-she.Research on rock freeze-thaw cycle andanti-tensile characteristics test[J].Journal of Xi'an University of Science and Technology,2012,(05):691.
[4]李喜安,郑惠芳,康景辉,等.黄土地层突涌破坏机理物理模拟[J].西安科技大学学报,2010,(05):560.
 LI Xi-an,ZHENG Hui-fang,KANG Jing-hui,et al.Physical simulation on the mechanism of soil-bursting failure in loess[J].Journal of Xi'an University of Science and Technology,2010,(05):560.
[5]叶万军,王贵荣,温乃宁,等.黄土路堑高边坡坡体排水断面优化计算方法[J].西安科技大学学报,2008,(01):55.[doi:10.3969/j.issn.1672-9315.2008.01.013]
 YE Wan-jun WANG Gui-rong WEN Nai-ning LI Guo-rong.An optimization method for drainage section in cutting loess high slope[J].Journal of Xi'an University of Science and Technology,2008,(05):55.[doi:10.3969/j.issn.1672-9315.2008.01.013]
[6]王朝阳,倪万魁,蒲毅彬.三轴剪切条件下黄土结构特征变化细观试验[J].西安科技大学学报,2006,(01):51.[doi:10.3969/j.issn.1672-9315.2006.01.013]
 WANG Zhao-yang NI Wan-kui PU Yi-bin.Microscopic experiment under triaxial test conditions of loess structure characteristic[J].Journal of Xi'an University of Science and Technology,2006,(05):51.[doi:10.3969/j.issn.1672-9315.2006.01.013]
[7]叶万军,李长清,李 晓,等.溶蚀作用对黄土体物理力学性质影响的试验[J].西安科技大学学报,2019,(04):60.[doi:10.13800/j.cnki.xakjdxxb.2019.0408]
 YE Wan-jun,LI Chang-qing,LI Xiao,et al.Experiment on the effect of rainfall erosion on physical and mechanical properties of loess[J].Journal of Xi'an University of Science and Technology,2019,(05):60.[doi:10.13800/j.cnki.xakjdxxb.2019.0408]
[8]杨更社,田俊峰,叶万军.冻融循环对阳曲隧道黄土细观损伤演化规律影响研究[J].西安科技大学学报,2014,(06):635.[doi:10.13800/j.cnki.xakjdxxb.2014.0601]
 YANG Geng-she,TIAN Jun-feng,YE Wan-jun.Influence of freeze-thaw cycles on Yangqu tunnel loess meso-damage evolution[J].Journal of Xi'an University of Science and Technology,2014,(05):635.[doi:10.13800/j.cnki.xakjdxxb.2014.0601]
[9]杨更社,魏尧,田俊峰,等.冻融循环对结构性黄土构度指标影响研究[J].西安科技大学学报,2015,(06):675.[doi:10.13800/j.cnki.xakjdxxb.2015.0601]
 YANG Geng-she,WEI Yao,TIAN Jun-feng,et al.Effect of the freeze-thaw cycles onstructural loess structure index[J].Journal of Xi'an University of Science and Technology,2015,(05):675.[doi:10.13800/j.cnki.xakjdxxb.2015.0601]

备注/Memo

备注/Memo:
收稿日期:2016-03-23 责任编辑:李克永
基金项目:国家自然科学基金(41272340, 41172262); 陕西省科技创新团队(2014KCT-30); 中国博士后科学基金面上资助项目(2013M532070)
通讯作者:刘 慧(1981-),女,山东微山县人,讲师,E-mail:woaiwojialiu@126.com
更新日期/Last Update: 2015-10-30