Development and application of an interface constitutive model for fully grouted rock-bolts and cable-bolts
| Autor: | Faouzi Hadj-Hassen, Laura Blanco-Martín, Michel Tijani, Emad Jahangir |
|---|---|
| Přispěvatelé: | Centre de Géosciences (GEOSCIENCES), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Rock bolt
Dilatant Interface (Java) Computer science Constitutive equation 0211 other engineering and technologies Phase (waves) [SDU.STU]Sciences of the Universe [physics]/Earth Sciences 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences GeneralLiterature_MISCELLANEOUS [SPI]Engineering Sciences [physics] TA703-712 Joint (geology) ComputingMilieux_MISCELLANEOUS Pull-out tests 021101 geological & geomatics engineering 0105 earth and related environmental sciences ComputingMethodologies_COMPUTERGRAPHICS business.industry Dilatancy Experimental data Interface constitutive model Structural engineering Engineering geology. Rock mechanics. Soil mechanics. Underground construction Geotechnical Engineering and Engineering Geology Finite element method Fully grouted bolts Finite element method (FEM) modeling business |
| Zdroj: | Journal of Rock Mechanics and Geotechnical Engineering, Vol 13, Iss 4, Pp 811-819 (2021) Journal of Rock Mechanics and Geotechnical Engineering Journal of Rock Mechanics and Geotechnical Engineering, Elsevier, 2021, 13 (4), pp.811-819. ⟨10.1016/j.jrmge.2021.03.011⟩ |
| ISSN: | 1674-7755 |
| Popis: | This paper proposes a new interface constitutive model for fully grouted rock-bolts and cable-bolts based on pull-out test results. A database was created combining published experimental data with in-house tests. By means of a comprehensive framework, a Coulomb-type failure criterion accounting for friction mobilization was defined. During the elastic phase, in which the interface joint is not yet created, the proposed model provides zero radial displacement, and once the interface joint is created, interface dilatancy is modeled using a non-associated plastic potential inspired from the behavior of rock joints. The results predicted by the proposed model are in good agreement with experimental results. The model has been implemented in a finite element method (FEM) code and numerical simulations have been performed at the elementary and the structural scales. The results obtained provide confidence in the ability of the new model to assist in the design and optimization of bolting patterns. |
| Databáze: | OpenAIRE |
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