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A new analytical solution to the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests

Abstract : 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
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00526686
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Soumis le : mardi 19 octobre 2010 - 15:20:45
Dernière modification le : jeudi 24 septembre 2020 - 16:34:06
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Laura Blanco Martin, Faouzi Hadj Hassen, Michel Tijani. A new analytical solution to the mechanical behaviour of fully grouted rockbolts subjected to pull-out tests. Construction and Building Materials, Elsevier, 2010, 25 (2), pp.1-7. ⟨10.1016/j.conbuildmat.2010.07.011⟩. ⟨hal-00526686⟩

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