黄土构度与物理指标之间的定量关系

doi:10.13722/j.cnki.jrme.2014.1226

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Abstract Loess is a kind of special structural soil. The structure can be described by a quantitative parameter called structural index. At present，qualitative relationships between structural and physical indices have been studied a lot，but seldom for quantitative relationships. In order to study the quantitative relationship between the structural and physical indexes of loess，a series of uniaxial compressive strength tests of undisturbed，remoulded and saturated loess specimens sampled from seven different fields were carried out respectively under different water contents，and the corresponding structural indices under different water contents were calculated. Furthermore，the quantitative relationships between structural index and water content were analyzed by the methods of data fitting，the comparison of fitting curves and the test verification. It is shown that the linear fitting curve converted from power function fits the laboratory results much better than exponential and power functions. The empirical formula of the quantitative relationships between structural index and water content are obtained. And the magnitude of structural index in engineering would change from the dry structural index to the saturated structural index. Thereby，a comprehensive physical index Z was proposed to calculate the dry structural index and empirical formula for the quantitative relationships between the dry structural index and physical indices was presented. These quantitative relationships would be beneficial for the application of structural index to practical engineering.

Key words： soil mechanics loess structure structural index physical index quantitative relationship

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	Articles by authors
	WANG Liqin1
	2
	SHAO Shengjun1
	2

Cite this article:

WANG Liqin1,2,SHAO Shengjun1, et al. QUANTITATIVE RELATIONSHIP BETWEEN STRUCTURAL AND PHYSICAL INDEXES OF LOESS[J]. , 2015, 34(S2): 4380-4386.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1226 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4380

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[15]	邵生俊，王丽琴，陶虎，等. 黄土的构度及其与粒度，密度，湿度之间的关系[J]. 岩土工程学报，2014，36(8)：1387-1393.(SHAO Shengjun，WANG Liqin，TAO Hu，et al. Structural index of loess and its relation with granularity，density and humidity[J]. Chinese Journal Geotechnical Engineering，2014，36(8)：1387-1393.(in Chinese))
[16]	王辉，何青峰，谢星，等. 不同地区Q2黄土的结构性对比分析[J]. 中国地质灾害与防治学报，2010，21(4)：99-103.(WANG Hui，HE Qingfeng，XIE Xing，et al. Comparation for structural behavior of Q2loess in different regions[J]. The Chinese Journal of Geological Hazard and Control，2010，21(4)：99-103.(in Chinese))
[17]	刘祖典. 黄土力学与工程[M]. 西安：陕西科学技术出版社，1997：46-51.(LIU Zudian. Mechanics and engineering of loess[M]. Xi¢an：Shaanxi Science and Technology Press，1997：46-51.(in Chinese))
	[18]
[1]	TERZAGHI K，PECK R B.Soil mechanics in engineering practice[M].New York：John Wiley and Sons，Inc.，1948：30-36.
[2]	沈珠江. 土体结构性的数学模型——21世纪土力学的核心问题[J].岩土工程学报，1996，18(1)：95-97.(SHEN Zhujiang. Mathematical model of soil structural property-Kernel problem of soil mechanics in21stcentury[J]. Chinese Journal Geotechnical Engineering，1996，18(1)：95-97.(in Chinese))
[3]	谢定义，齐吉琳. 土结构性及其定量化参数研究的新途径[J]. 岩土工程学报，1999，21(6)：651-656.(XIE Dingyi，QI Jilin. Soil structure characteristics and new approach in research on its quantitative parameter[J]. Chinese Journal of Geotechnical Engineering，1999，21(6)：651-656.(in Chinese))
[4]	谢定义. 21世纪土力学的思考[J].岩土工程学报，1997，19(4)：111-114.(XIE Dingyi. Consideration of soil mechanics in 21stcentury[J]. Chinese Journal Geotechnical Engineering，1997，19(4)：111-114.(in Chinese))
[5]	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.(XIE Dingyi.Exploration of some new tendencies in research of loess soil mechanics[J]. Chinese Journal Geotechnical Engineering，2001，23(1)：3-13.(in Chinese))
[6]	骆亚生，谢定义，邵生俊，等. 复杂应力状态下的土结构性参数[J].岩石力学与工程学报，2004，23(24)：4248-4251.(LUO Yasheng，XIE Dingyi，SHAO Shengjun，et al. Structural parameter of soil under complex stress conditions[J]. Chinese Journal of Rock Mechanics and
	Engineering，2004，23(24)：4248-4251.(in Chinese))
[7]	邵生俊，周飞飞，龙吉勇. 原状黄土结构性及其定量化参数研究[J].岩土工程学报，2004，26(4)：531-536.(SHAO Shengjun，ZHOU Feifei，LONG Jiyong. Structural properties of loess and its quantitative parameter[J]. Chinese Journal of Geotechnical Engineering，2004，26(4)：531-536.(in Chinese))
[8]	陈存礼，高鹏，胡再强. 黄土的增湿变形特性及其与结构性的关系[J]. 岩石力学与工程学报，2006，25(7)：1 352-1 360.(CHEN Cunli，GAO Peng，HU Zaiqiang. Moistening deformation characteristic of loess and its relation to structure[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(7)：1 352-1 360.(in Chinese))
[9]	冯志焱. 非饱和黄土的结构性定量化参数与结构性本构关系研究[博士学位论文][D].西安：西安理工大学，2008.(FENG Zhiyan. Research on soil structural parameters and structural constitutive model of unsaturated loess[Ph. D. Thesis][D]. Xi¢an：Xi¢an University of Technology，2008.(in Chinese))
[10]	邓国华. 真三轴条件下黄土的结构性参数及结构性本构关系研究[博士学位论文][D]. 西安：西安理工大学，2009.(DENG Guohua. Research on structure parameter of loess and structure constitutive relations under ture tri-axial condition[Ph. D. Thesis][D]. Xi¢an：Xi¢an University of Technology，2009.(in Chinese))
[11]	邓国华，邵生俊，陈昌禄，等. 一个可考虑球应力和剪应力共同作用的结构性参数[J]. 岩土力学，2012，33(8)：2 310-2 314.(DENG Guohua，SHAO Shengjun，CHEN Changlu，et al. A structural parameter reflecting coupling action between shear stress and spherical stress[J]. Rock and Soil Mechanics，2012，33(8)：2 310-2 314.(in Chinese))
[12]	邓国华，邵生俊，高虎艳. 土的综合结构势及结构性参数研究进展[J]. 岩土力学，2009，30(增2)：178-184.(DENG Guohua，SHAO Shengjun，GAO Huyan. Advances in comprehensive structural potential and structural parameters of soils[J]. Rock and Soil Mechanics，2009，30(Supp.2)：178-184.(in Chinese))
[13]	邵生俊，郑文，王正泓，等. 黄土的构度指标及其试验确定方法[J]. 岩土力学，2010，31(1)：15-19.(SHAO Shengjun，ZHENG Wen，WANG Zhenghong，et al. Structural index of loess and its testing method[J]. Rock and Soil Mechanics，2010，31(1)：15-19.(in Chinese))
[14]	骆亚生，谢定义，李鹏. 非饱和黄土结构特性变化的主要影响因素[J]. 水土保持通报，2005，25(2)：36-39.(LUO Yasheng，XIE Dingyi，LI Peng. Main influence factors on structural property changes of unsaturated loess[J]. Bulletin of Soil and Water Conservation，2005，25(2)：36-39.(in Chinese))
[15]	邵生俊，王丽琴，陶虎，等. 黄土的构度及其与粒度，密度，湿度之间的关系[J]. 岩土工程学报，2014，36(8)：1387-1393.(SHAO Shengjun，WANG Liqin，TAO Hu，et al. Structural index of loess and its relation with granularity，density and humidity[J]. Chinese Journal Geotechnical Engineering，2014，36(8)：1387-1393.(in Chinese))
[16]	王辉，何青峰，谢星，等. 不同地区Q2黄土的结构性对比分析[J]. 中国地质灾害与防治学报，2010，21(4)：99-103.(WANG Hui，HE Qingfeng，XIE Xing，et al. Comparation for structural behavior of Q2loess in different regions[J]. The Chinese Journal of Geological Hazard and Control，2010，21(4)：99-103.(in Chinese))
[17]	刘祖典. 黄土力学与工程[M]. 西安：陕西科学技术出版社，1997：46-51.(LIU Zudian. Mechanics and engineering of loess[M]. Xi¢an：Shaanxi Science and Technology Press，1997：46-51.(in Chinese))
	[18]