Volume 37 Issue 5
Oct.  2023
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Article Navigation >  GEOTECHNICAL ENGINEERING TECHNIQUE  > 2023  >  37(5): 609-613
Sun Jielong, Wang Hongqi, Li Shengbin, Li Dawei, Qiu Mingming. Deterioration Characteristics of High-fill Loess Shear Strength under Freeze-thaw[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(5): 609-613. doi: 10.3969/j.issn.1007-2993.2023.05.015
Citation: Sun Jielong, Wang Hongqi, Li Shengbin, Li Dawei, Qiu Mingming. Deterioration Characteristics of High-fill Loess Shear Strength under Freeze-thaw[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(5): 609-613. doi: 10.3969/j.issn.1007-2993.2023.05.015
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Deterioration Characteristics of High-fill Loess Shear Strength under Freeze-thaw

doi: 10.3969/j.issn.1007-2993.2023.05.015
  • 1.

    School of Architecture and Civil Engineering, Yan’an University, Yan’an 716000, Shaanxi, China

  • 2.

    SCEGC No.13 Construction Engineering Group Company Ltd., Yan’an 716000, Shaanxi, China

  • Received Date: 2022-07-13
  • Accepted Date: 2023-05-06
  • Rev Recd Date: 2023-02-22
  • Publish Date: 2023-10-16
    Abstract
  • Taking the high-fill loess in Yan'an New Area as an example, the experimental study on the shear strength of high-fill loess under freeze-thaw action was carried out, and the influence of freeze-thaw action on shear strength index of high-fill loess and its deterioration characteristics were analyzed. The results show that the cohesive force of high-fill loess decreases gradually with the increase of freeze-thaw cycles under the action of freeze-thaw, after the fourth freeze-thaw cycle the cohesive force damage increases to the maximum, and then decreases gradually with the continuation of freeze-thaw. When the dry density is the same, the smaller the water content, the greater the cohesion, and the smaller the moisture content under freeze-thaw, the greater the amplitude and rate of cohesion deterioration. The internal friction angle has no obvious regular change under the action of freeze-thaw. The cohesive damage degradation model of high-fill loess under freeze-thaw action is given and verified by independent test data. The results show that the model can effectively describe the cohesive force degradation characteristics of high-fill loess under freeze-thaw.

     

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    • References(21)
  • [1]
    谢定义. 试论我国黄土力学研究中的若干新趋向[J]. 岩土工程学报,2001,23(1):3-13.
    [2]
    郑 方,邵生俊,王松鹤. 复杂应力条件下冻融作用对黄土强度的影响[J]. 岩土工程学报,2021,43(S1):224-228. doi: 10.11779/CJGE2021S1041
    [3]
    许 健,张明辉,李彦锋,等. Na2SO4盐渍原状黄土冻融过程劣化特性试验研究[J]. 岩土工程学报,2020,42(9):1642-1650. doi: 10.11779/CJGE202009008
    [4]
    李宝平,平高权,张 玉,等. 平面应变条件下冻融循环对黄土力学性质的影响[J]. 土木与环境工程学报(中英文),2021,43(2):41-48.
    [5]
    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.
    [6]
    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.
    [7]
    董晓宏,张爱军,连江波,等. 长期冻融循环引起黄土强度劣化的试验研究[J]. 工程地质学报,2010,18(6):887-893. doi: 10.3969/j.issn.1004-9665.2010.06.012
    [8]
    周 泓,张豫川,张 泽,等. 冻融作用下冻结黄土黏聚力长期强度变化规律[J]. 岩土力学,2014,35(8):2241-2246,2254.
    [9]
    张 泽,周 乱,秦 琦,等. 冻融循环作用下黄土的孔隙特征试验[J]. 吉林大学学报(地球科学版),2017,47(3):839-847.
    [10]
    李国玉,马 巍,李 宁,等. 冻融对压实黄土工程地质特性影响的试验研究[J]. 水利与建筑工程学报,2010,8(4):5-7,20.
    [11]
    宋春霞,齐吉琳,刘奉银. 冻融作用对兰州黄土力学性质的影响[J]. 岩土力学,2008,29(4):1077-1086. doi: 10.3969/j.issn.1000-7598.2008.04.042
    [12]
    庞旭卿,胡再强,刘 寅. 冻融循环作用对黄土力学性质损伤的试验研究[J]. 铁道科学与工程学报,2016,13(4):669-674. doi: 10.3969/j.issn.1672-7029.2016.04.012
    [13]
    VIKLANDER P. Permeability and volume changes in till due to cyclic freeze-thaw[J]. Canadian Geotechnical Journal,1998,35(3):471-477. doi: 10.1139/t98-015
    [14]
    雷胜友,唐文栋. 黄土在受力和湿陷过程中微结构变化的CT扫描分析[J]. 岩石力学与工程学报,2014,23(24):4166-4169.
    [15]
    王朝阳,许 强,倪万魁. 原状黄土CT试验中应力–应变关系的研究[J]. 岩土力学,2010,31(2):387-396. doi: 10.3969/j.issn.1000-7598.2010.02.010
    [16]
    赵淑萍,马 巍,郑剑锋,等. 基于CT单向压缩试验的冻结重塑兰州黄土损伤耗散势研究[J]. 岩土工程学报,2012,34(11):2019-2025.
    [17]
    王铁行,罗少锋,刘小军. 考虑含水率影响的非饱和原状黄土冻融强度试验研究[J]. 岩土力学,2010,31(8):2378-2382. doi: 10.3969/j.issn.1000-7598.2010.08.005
    [18]
    王掌权,许 健,郑 翔,等. 反复冻融条件下黄土边坡稳定性分析[J]. 中国地质灾害与防治学报,2017,28(2):15-21. doi: 10.16031/j.cnki.issn.1003-8035.2017.02.03
    [19]
    折海成,胡再强,薛 婷,等. 增湿–冻融劣化原状黄土结构强度试验研究[J]. 科学技术与工程,2020,20(4):1558-1566.
    [20]
    赵鲁庆,杨更社,吴 迪,等. 冻融黄土微观结构变化规律及分形特性研究[J]. 地下空间与工程学报,2019,15(6):1680-1690.
    [21]
    周春梅,王琴华,张静波,等. 干湿和冻融循环对压实黄土路用性能影响的试验研究[J]. 防灾减灾工程学报,2019,39(3):533-540.
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