Comparison of active earth pressure formulations of loess based on joint strength

被引：0

作者：

Luo H. ^{[1
]}

Li R.-J. ^{[1
]}

Liu J.-D. ^{[1
]}

Huo X.-T. ^{[1
]}

Zhang Z. ^{[1
]}

Sun P. ^{[2
]}

机构：

[1] Institute of Geotechnical Engineering, Xi'an University of Technology, Xi'an, 710048, Shaanxi

[2] Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing

来源：

Yantu Lixue/Rock and Soil Mechanics | 2017年 / 38卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Active earth pressure; Joint strength formula; Loess; Tensile strength;

D O I：

10.16285/j.rsm.2017.07.031

中图分类号：

学科分类号：

摘要：

Earth pressure is one of the traditional research subjects in geotechnical engineering. With respect to the structural loess, shear strength and tensile strength are two aspects of structural loess strength characteristics. Therefore, the impact of tensile strength of loess on the earth pressure calculation needs to be evaluated reasonably. Based on the theory of joint strength considering tension and shear properties of loess simultaneously, a new formula of active earth pressure is derived to analyze equilibrium of active limit stress state. The formula is verified and compared with Rankine's active earth pressure. Result shows that the active earth pressure based on the joint strength theory is larger than Rankine's active earth pressure determined by traditional Mohr-Coulomb theory, and the tensile crack depth of soil behind wall is relatively small. Due to the overestimation of the tensile strength in Mohr-Coulomb strength theory, the value of Rankine's active earth pressure is underestimated. However, the theory of joint strength based on tensile strength of loess can reasonably calculate the active earth pressure. © 2017, Science Press. All right reserved.

引用

页码：2080 / 2086and2112

共 21 条

[1]

Nova R., Gabrieli L., Soil Mechanics, (2010)

[2]

Coulomb C.A., Essaissurune Application des Regles des Maximis et Minimis a Quelques Problems de Statiquerelatits a I'architecture, (1776)

[3]

Rankine W.J.M., On the stability of loose earth, Philosophical Transactions of the Royal Society of London, 147, 1, pp. 9-27, (1857)

[4]

Terzaghi K., Record earth pressure testing machine, Engineering News Record, 109, 29, pp. 365-369, (1932)

[5]

Fang Y.S., Ishibashi I., Static earth pressures with various well movements, Journal of Geotechnical Engineering, 112, 3, pp. 317-333, (1986)

[6]

Fang Y.S., Chen T.J., Wu B.F., Passive earth pressure with various wall movements, Journal of Geotechnical Engineering, 120, 8, pp. 1307-1323, (1994)

[7]

Xie Q.-D., He J., Liu J., Et al., Unified twin shear strength theory for calculation of earth pressure, Chinese Journal of Geotechnical Engineering, 25, 3, pp. 343-345, (2003)

[8]

Gao J.-P., Liu Y.-L., Yu M.-H., Unified strength theory with applications to earth pressure, Journal of Xi'an Jiaotong University, 40, 3, pp. 357-364, (2006)

[9]

Zhang J., Hu R.-L., Liu H.-B., Et al., Calculation study of ranking earth pressure based on unified strenbgth theory, Chinese Journal of Rock Mechanics and Engineering, 29, pp. 3169-3176, (2010)

[10]

Fan W., Sheng Z.-J., Yu M.-H., Upper-bound limit analysis of earth pressure based on unified strength theory, Rock and Soil Mechanics, 27, 10, pp. 1147-1153, (2005)

← 1 2 3 →