A Shear Model Accounting Scale Effect in Rock Joints Behavior |
| |
| Authors: | F Vallier Y Mitani M Boulon T Esaki F Pellet |
| |
| Institution: | (1) Institute of Environmental Systems, Kyushu University, Fukuoka, Japan;(2) University of Grenoble, Lab 3S-R, Grenoble, France |
| |
| Abstract: | Understanding the scale effect on the mechanical behavior of a single rock joint is still very important in rock engineering.
Rock joints can be classified into three different categories depending on their scale: the “micro scale” which is the scale
of the asperities; the “meso scale” is the scale of the specimens tested in laboratory; and the “macro scale” which is the
scale of the rock mass. The purpose of this paper is to propose an effective way to model rock joints at both the meso and
macro scale. An original constitutive mechanical model, in which parameters are deduced from experimental results, has been developed.
This model is then extended to simulate the discontinuities occurring at a larger size. At the macro scale, the constitutive
modeling was carried out for both small and large relative displacements. Large displacements lead to substantial changes
in dilation. For both cases, the peak shear stress vanishes for joints longer than 2 m. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
