膨胀土的有荷膨胀模型研究及其应用初探

李明艳 童军 徐超

李明艳, 童军, 徐超. 2023. 膨胀土的有荷膨胀模型研究及其应用初探[J]. 工程地质学报, 31(5): 1543-1551. doi: 10.13544/j.cnki.jeg.2021-0168
引用本文: 李明艳, 童军, 徐超. 2023. 膨胀土的有荷膨胀模型研究及其应用初探[J]. 工程地质学报, 31(5): 1543-1551. doi: 10.13544/j.cnki.jeg.2021-0168
Li Mingyan, Tong Jun, Xu Chao. 2023. Preliminary study on loading expansion model of expansive soil and application[J]. Journal of Engineering Geology, 31(5): 1543-1551. doi: 10.13544/j.cnki.jeg.2021-0168
Citation: Li Mingyan, Tong Jun, Xu Chao. 2023. Preliminary study on loading expansion model of expansive soil and application[J]. Journal of Engineering Geology, 31(5): 1543-1551. doi: 10.13544/j.cnki.jeg.2021-0168

膨胀土的有荷膨胀模型研究及其应用初探

doi: 10.13544/j.cnki.jeg.2021-0168
基金项目: 

国家重点研发计划项目 2017YFC0405001

安徽省引江济淮集团有限公司科技项目 YJJH-ZT-ZX-20191031216

详细信息
    作者简介:

    李明艳(1998-),女,硕士生,主要从事土工合成材料、岩土加固技术方向的研究. E-mail:2030171@tongji.edu.cn

    通讯作者:

    童军(1983-),男,博士,正高级工程师,主要从事环境岩土工程的研究咨询工作. E-mail:tongjun@mail.crsri.cn

  • 中图分类号: TU431

PRELIMINARY STUDY ON LOADING EXPANSION MODEL OF EXPANSIVE SOIL AND APPLICATION

Funds: 

National Key R&D Program of China 2017YFC0405001

Science and Technology Project of Anhui Provincial Group Limited for Yangtze-to-Huaihe Water Diversion YJJH-ZT-ZX-20191031216

  • 摘要: 膨胀土是一种具有强胀缩、多裂隙、反复变形的特殊性黏土。膨胀土对外界环境变化非常敏感,由此而产生的变形与稳定问题是膨胀土地区工程建设的主要课题。本文归纳分析了现有的膨胀模型,基于膨胀土的膨胀变形随初始干密度的增大而增大,随初始含水率与垂向压力的增大而减小的规律性,提出了多因素耦合的膨胀土有荷膨胀模型。在该模型中,用压实度来反映初始干密度的影响,在单因素作为变量时,膨胀率与压实度呈线性关系,与初始含水率、垂向压力成对数关系。对邯郸强膨胀土、南阳中膨胀土与宁淮弱膨胀土的有荷膨胀试验结果进行验证,整体拟合效果较好。进而探讨了膨胀土有荷膨胀模型的工程应用,包括膨胀土地区处理层厚度的估算与膨胀土边坡的衬砌厚度的设计计算。
  • 图  1  压实度为90%时,膨胀率与压力的拟合关系

    a. 线性坐标;b. 半对数坐标

    Figure  1.  Fitting curves of swelling rate and pressure at 90%degree of compaction

    图  2  压实度为92%时,膨胀率与压力的拟合关系

    a. 线性坐标;b. 半对数坐标

    Figure  2.  Fitting curves of swelling rate and pressure at 92%degree of compaction

    图  3  压实度为95%时,膨胀率与压力的拟合关系

    a. 线性坐标;b. 半对数坐标

    Figure  3.  Fitting curves of swelling rate and pressure at 95%degree of compaction

    图  4  压实度为99%时,膨胀率与压力的拟合关系

    a. 线性坐标;b. 半对数坐标

    Figure  4.  Fitting curves of swelling rate and pressure at 99%degree of compaction

    图  5  参数a与初始含水率的拟合图

    Figure  5.  Fitting curve of parameter a and initial water content

    图  6  参数b与初始含水率的拟合图

    Figure  6.  Fitting curve of parameter b and initial water content

    图  7  参数mnrs与压实度的关系曲线

    Figure  7.  Relationship curves of parameters m,n,r,s and degree of compaction

    图  8  邯郸强膨胀土计算值与试验值的对比

    Figure  8.  Comparison of calculated and experimental values of Handan strong expansive soil

    图  9  邯郸强膨胀土膨胀模型计算值对比

    Figure  9.  Comparison of calculated values by the expansion mode of Handan strong expansive soil

    图  10  南阳中膨胀土计算值与试验值的对比

    Figure  10.  Comparison of calculated and experimental values of Nanyang medium expansive soil

    图  11  南阳中膨胀土膨胀模型计算值对比

    Figure  11.  Comparison of calculated values by the expansion mode of Nanyang medium expansive soil

    图  12  宁淮弱膨胀土计算值与试验值对比

    Figure  12.  Comparison of calculated and experimental values of Ninghuai weak expansive soil

    图  13  宁淮弱膨胀土膨胀模型计算值对比

    Figure  13.  Comparison of calculated values by the expansion mode of Ninghuai weak expansive soil

    图  14  膨胀土边坡的变形深度及计算示意图

    Figure  14.  Diagram of deformation depth and calculation of expansive soil slope

    表  1  邯郸强膨胀土基本性质(黄斌等,2011)

    Table  1.   Basic properties of Handan strong expansive soil (Huang et al.,2011)

    液限/% 塑限/% 塑性指数 自由膨胀率/% 最大干密度/g·cm-3 最优含水率/%
    62.4 26.2 36.2 124 1.40 30.3
    下载: 导出CSV

    表  2  南阳中膨胀土基本性质(王顺等,2011)

    Table  2.   Basic properties of Nanyang medium expansive soil (Wang et al.,2011)

    液限/% 塑限/% 塑性指数 自由膨胀率/% 最大干密度/g·cm-3 最优含水率/%
    64.4 26.1 38.3 79 1.63 24.4
    下载: 导出CSV

    表  3  宁淮弱膨胀土基本性质(张福海等,2010)

    Table  3.   Basic properties of Ninghuai weak expansive soil (Zhang et al.,2010)

    液限/% 塑限/% 塑性指数 自由膨胀率/% 最大干密度/g·cm-3 最优含水率/%
    48.0 22.0 26.0 49 1.897 14.2
    下载: 导出CSV
  • Chen Q, Peng Y L, Cao Z Z, et al. 2019. Experimental study on dynamic characteristics of expansive soil from Yanzhou-Shijiusuo railway roadbed under cyclic loading[J]. Journal of Engineering Geology, 27(4): 737-744.
    Chijioke C I, Donald C N. 2019. Emerging trends in expansive soil stabilization: A review[J]. Journal of Rock Mechanics and Geotechnical Engineering, 11(2): 423-440. doi: 10.1016/j.jrmge.2018.08.013
    Einstein H H. 1989. Suggested methods for laboratory testing of arginaceous swelling rock[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 26(5): 415-426.
    Huang B, He X M, Tan F. 2011. Experimental study on expansion model of expansive soil in state of K0 stress[J]. Chinse Journal of Geotechnical Engineering, 33(S1): 442-447.
    Huang B, Cheng Z L, Xu H. 2014. Expansive model of expansion soil and its application to slope engineering [J]. Rock and Soil Mechanics, 35(12): 3550-3555.
    Jia J C. 2010. Study on the swelling mechanism and mesomechanical swelling model of expansive soil[D]. Dalian: Dalian University of Technology.
    Leng T, Tang C S, Xu D, et al. 2018. Advance on the engineering geological characteristics of expansive soil[J]. Journal of Engineering Geology, 26(1): 112-128.
    Liu Q B, Wu Y G, Xiang W, et al. 2016. Swelling model study of expansive soil at K0 and triaxial stress state[J]. Rock and Soil Mechanics, 37(10): 2795-2802, 2809.
    Miao L C, Zhong X C, Yin Z Z. 1999. Test research of unsaturated expansive soil strain laws [J]. Dam Observation and Geotechnical Test, 23(3): 36-39.
    Miao P, Xiao H B, Fan Z Q. 2008. Trial tests on the swell-shrink strain of Nanning expansive soil under different initial conditions[J]. Highway Engineering, 33(2): 38-41, 117.
    Mokhtari M, Dehghani M. 2012. Swell-shrink behavior of expansive soils, damage and control[J]. EJGE, 17: 2673-2682.
    Ömür Ç, S. N K, Hüseyin Y. 2012. Prediction of swelling potential and pressure in compacted clay[J]. Arabian Journal for Science and Engineering, 37(6): 1535-1546. doi: 10.1007/s13369-012-0268-4
    Rahimi H, Baroothoob S H. 2002. Concrete canal lining cracking in low to medium plastic soils[J]. Irrigat Drainage, 51: 141-153. doi: 10.1002/ird.41
    Robert L L. 1999. Expansive soils problems and practice in foundation and pavement engineering John D. Nelson and Debora J. Miller, Wiley, New York, 1992, 259 pp. [J]. International Journal for Numerical and Analytical Methods in Geomechanics, 23(10): 1067.
    Rui S J, Chen X L, Liu Q H, et al. 2017. Study on the strength of expansive soil based on water content and dry-wet cyclic[J]. Science Technology and Engineering, 17(25): 284-289.
    Shang Y H, Xu L R, Huang Y L, et al. 2020. Laboratory tests on dynamic modulus and damping ratio of cement stabilized expansive soil as subgrade filling of heavy haul railway[J]. Journal of Engineering Geology, 28(1): 103-110.
    Shen Y B, Shao X, Wu J J, et al. 2015. Study on swelling law of expansive soil in foundation pit of Hefei metro station under loading condition [J]. Railway Engineering, (4): 122-126.
    Su P H, Chen S K, Zhao X Y, et al. 2020. Model test on reenforcement mechanism of geogrid steel tube expansive soil retaining wall for slope stability of Nankun railway[J]. Journal of Engineering Geology, 28(3): 658-666.
    The National Standards Compilation Group of the People's Republic of China. 2012. Technical code for buildings in expansive soil areas(GB 50112-2013)[S]. Beijing: China Architecture and Building Press: 10.
    Uppal H L, Chadda L R. 1967. Physico-chemical changes in the lime stabilization of black cotton soil(India)[J]. Engineering Geology, 2(3): 179-189.
    Wang S, Li T T, Wang L, et al. 2011. Research on deformation disciplines of compacted expansive soil in Nanyang [J]. Hydro-Science and Engineering, (3): 36-41.
    Weston D J. 1980. Expansive roaded treatment for Southern Africa[C]//Proc. 4th 1nt. Conf. Expansive Soils. Denver, 1: 339-360.
    Wu Y G. 2011. Experiment study on expansion constitutive model of expansive soil in south-to-north water transfer project [D]. Wuhan: China University of Geoscience(Wuhan).
    Xu Y, Lei S Y. 2003. Analysis of variance affecting linear swelling ratio[J]. Journal of Chang'an University(Arch. and Envir. Science Edition), 20(2): 6-9.
    Zhang F H, Wang B T, Liu H L. 2010. Research on deformation disciplines of compacted expansive soils[J]. Rock and Soil Mechanics, 31(1): 206-210.
    陈强, 彭永良, 曹正正, 等. 2019. 循环荷载下兖石铁路路基膨胀土的动力特性试验研究[J]. 工程地质学报, 27(4): 737-744. doi: 10.13544/j.cnki.xq2019030
    黄斌, 何晓民, 谭凡. 2011. K0应力状态膨胀土膨胀模型试验研究[J]. 岩土工程学报, 33(S1): 442-447. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2011S1085.htm
    黄斌, 程展林, 徐晗. 2014. 膨胀土膨胀模型及边坡工程应用研究[J]. 岩土力学, 35(12): 3550-3555. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201412028.htm
    贾景超. 2010. 膨胀土膨胀机理及细观膨胀模型研究[D]. 大连: 大连理工大学.
    冷挺, 唐朝生, 徐丹, 等. 2018. 膨胀土工程地质特性研究进展[J]. 工程地质学报, 26(1): 112-128. doi: 10.13544/j.cnki.jeg.2018.01.013
    刘清秉, 吴云刚, 项伟, 等. 2016. K0及三轴应力状态下压实膨胀土膨胀模型研究[J]. 岩土力学, 37(10): 2795-2802, 2809. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201610008.htm
    缪林昌, 仲晓晨, 殷宗泽. 1999. 非饱和膨胀土变形规律的试验研究[J]. 大坝观测与土工测试, 23(3): 36-39. https://www.cnki.com.cn/Article/CJFDTOTAL-DBGC199903015.htm
    苗鹏, 肖宏彬, 范志强. 2008. 不同初始条件下的南宁膨胀土胀缩应变试验研究[J]. 公路工程, 33(2): 38-41, 117. https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGL200802010.htm
    芮圣洁, 陈晓岚, 刘清华, 等. 2017. 基于含水率及干湿循环膨胀土强度研究[J]. 科学技术与工程, 17(25): 284-289. https://www.cnki.com.cn/Article/CJFDTOTAL-KXJS201725047.htm
    商拥辉, 徐林荣, 黄亚黎, 等. 2020. 重载铁路水泥改良膨胀土路基填料动弹模量及阻尼比研究[J]. 工程地质学报, 28(1): 103-110. doi: 10.13544/j.cnki.jeg.2017-511
    沈银斌, 邵迅, 吴军军, 等. 2015. 合肥地铁车站基坑膨胀土有荷条件下的变形规律研究[J]. 铁道建筑, (4): 122-126. https://www.cnki.com.cn/Article/CJFDTOTAL-TDJZ201504035.htm
    苏丕辉, 陈仕阔, 赵晓彦, 等. 2020. 南昆铁路钢管格栅膨胀土挡墙边坡加固机理模型试验研究[J]. 工程地质学报, 28(3): 658-666. doi: 10.13544/j.cnki.jeg.2019-213
    王顺, 李涛涛, 王林, 等. 2011. 南阳压实膨胀土膨胀变形规律研究[J]. 水利水运工程学报, (3): 36-41. https://www.cnki.com.cn/Article/CJFDTOTAL-SLSY201103005.htm
    吴云刚. 2011. 南水北调中线工程膨胀土膨胀本构模型试验研究[D]. 武汉: 中国地质大学(武汉).
    许瑛, 雷胜友. 2003. 影响有荷载膨胀率的因素分析[J]. 长安大学学报(建筑与环境科学版), 20(2): 6-9. https://www.cnki.com.cn/Article/CJFDTOTAL-XBJG200302001.htm
    张福海, 王保田, 刘汉龙. 2010. 压实膨胀土路基的膨胀变形规律研究[J]. 岩土力学, 31(1): 206-210. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201001036.htm
    中华人民共和国国家标准编写组. 2012. 膨胀土地区建筑技术规范(GB 50112-2013)[S]. 北京: 中国建筑工业出版社: 10.
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出版历程
  • 收稿日期:  2021-03-29
  • 修回日期:  2021-05-18
  • 刊出日期:  2023-10-25

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