Peak shear strength criterion for rock joints based on three-dimensional morphology characteristics

被引：0

作者：

Sun, Fu-Ting ^{[1
]}

She, Cheng-Xue ^{[1
]}

Wan, Li-Tai ^{[1
]}

Jiang, Qing-Ren ^{[2
]}

机构：

[1] State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University

[2] Hydro China Guiyang Engineering Corporation

来源：

Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2014年 / 36卷 / 03期

关键词：

Direct shear test; Joint; Joint morphology; Peak shear strength; Rock mechanics;

D O I：

10.11779/CJGE201403016

中图分类号：

学科分类号：

摘要：

Three 3D morphology parameters independent of measurement scale within limits are introduced to characterize the morphology characteristics of rock joints, and a new peak shear strength criterion for the rock joints is developed based on the morphology parameters. Then, both the new criterion and Barton's criterion are adopted to calculate the peak shear strength of 23 pairs of rock joints. By comparing the calculated and tested peak shear strengths, the new criterion is proved to be more reasonable, while the peak shear strength calculated by Barton's formula is underestimated. The new criterion has a clear physical meaning because the contribution of different morphology characteristics to the peak shear strength is represented in detail by the three morphology parameters, and it is also convenient for the new criterion to be applied to engineering practice since the morphology parameters can be measured by any scale within some limits. Furthermore, the new criterion is essentially the generalized 3D form of Patton's criterion as it can be simplified to Patton's formula when applied to regular joints.

引用

页码：529 / 536

页数：7

共 18 条

[1] Patton F.D., Multiple modes of shear failure in rock, Proc First Congress of International Society of Rock Mechanics, pp. 509-513, (1966)
[2] Barton N., Review of a new shear strength criterion for rock joints, Engineering Geology, 7, 4, pp. 287-332, (1973)
[3] Barton N., Choubey V., The shear strength of rock joints in theory and practice, Rock Mechanics, 10, 1-2, pp. 1-54, (1977)
[4] Ladanyi B., Archambault G., Simulation of shear behaviour of a jointed rock mass, The 11th US Symposium on Rock Mechanics(USRMS), pp. 105-125, (1969)
[5] Schneider H.J., The friction and deformation behaviour of rock joints, Rock Mechanics, 8, 3, pp. 169-184, (1976)
[6] Maksimovic M., The shear strength components of a rough rock joint, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 33, 8, pp. 769-783, (1996)
[7] Zhao J., Joint surface matching and shear strength part B: JRC-JMC shear strength criterion, International Journal of Rock Mechanics and Mining Sciences, 34, 2, pp. 179-185, (1997)
[8] Kulatilake P., Shou G., Huang T.H., Et al., New peak shear strength criterion for anisotropic rock joints, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abastracts, 32, 7, pp. 673-697, (1996)
[9] Graasselli G., Wirth J., Egger P., Quantitative three-dimensional description of a rough surface and parameter evolution with shearing, International Journal of Rock Mechanics and Mining Sciences, 39, 6, pp. 789-800, (2002)
[10] Grasselli G., Shear strength of rock joints based on quantified surface description, Rock Mechanics and Rock Engineering, 39, 4, pp. 295-314, (2006)

← 1 2 →