1. A new analytical solution to the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests
- Author
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Faouzi Hadj-Hassen, Laura Blanco Martin, Michel Tijani, Centre de Géosciences (GEOSCIENCES), MINES ParisTech - École nationale supérieure des mines de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)
- Subjects
Engineering ,Analytical solution Bond-slip model Fully grouted rockbolts Joint interface Pull-out test ,business.industry ,Constitutive equation ,0211 other engineering and technologies ,Young's modulus ,02 engineering and technology ,Building and Construction ,Structural engineering ,[SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] ,symbols.namesake ,[PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph] ,symbols ,General Materials Science ,Geotechnical engineering ,business ,Displacement (fluid) ,Joint (geology) ,021102 mining & metallurgy ,021101 geological & geomatics engineering ,Civil and Structural Engineering - Abstract
International audience; A new analytical approach able to predict the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests is proposed in this paper. Input parameters of such approach are: bolt radius, bolt's Young modulus, displacement of the free end of the bolt and the constitutive law of the rockbolt-grout joint interface. The limited circumstances under which it is accurate to determine such constitutive law from pull-out tests are also presented. A solution for the load-displacement curve obtained during pullout tests has been developed and is detailed in the case of a tri-linear bond-slip model. Comparison with experimental results obtained via in situ pull-out tests has led to the validation of this approach
- Published
- 2011
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