The rock mechanical relevance of anisotropy in tunnel design

被引：0
|
作者：
Marcher T. [1 ]
机构：
[1] Graz University of Technology, Institute for Rock Mechanics and Tunnelling, Rechbauerstr. 12, Graz
来源：
Geomechanik und Tunnelbau | 2024年 / 17卷 / 01期
关键词：
hard soil-soft rock (HSSR); quartz phyllite; rock anisotropy; scale effect;
D O I：
10.1002/geot.202300052
中图分类号：
学科分类号：
摘要：
The assumption of an isotropic material behaviour is still common practice for tunnel design. Strictly speaking, this assumption is only valid if the influence of directional dependencies on the resulting deformations and stresses is marginal. In lithologies that have a high degree of anisotropy, such as shales and phyllites, the orientation characteristics of material properties such as strength and stiffness should be taken into account in order to avoid serious misinterpretations of the bearing capacity and deformation characteristic of the surrounding rock and the tunnel lining. The main focus is to accurately distinguish between the different types and terminology of anisotropy. © 2023 Ernst & Sohn GmbH.
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页码：29 / 33
页数：4
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