FE-Modelling of behaviour of granular anchors in rock and soils

• Autorzy: Wehr J. , Tejchman J.
• Języki publikacji: EN

Abstrakty

EN

The paper is concerned with granular anchors in rock and soils. Model tests and numerical calculations were performed. The effect of different parameters on the behaviour of anchors was investigated: anchor length, anchor diameter, initial density and mean grain diameter of the granular material, anchor roughness and stiffness of the borehole wall. The experiments were modelled with a finite element method and a polar hypoplastic constitutive relation. The relation can capture the salient properties of granular materials during shearing. A satisfactory agreement between experiments and numerical calculations was obtained. Advantages and limitations of granular anchors in rock and soils were outlined.

Słowa kluczowe

EN

anchor; finite element method; granular materials; hypoplasticity; polar continuum

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2000
• Tom: Vol. 4, No 3
• Strony: 517--526
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Wehr J.

• Keller Grundbau GmbH, D-63006 Offenbach, Germany

autor

Tejchman J.

• Institute for Concrete Structures, Technical University of Gdansk, Narutowicza 11/12, 80-952 Gdansk, Poland

Bibliografia

• [1] Bauer E., Calibration of a comprehensive hypoplastic model for granular materials. Soils and Foundations 36, 13, 1996
• [2] de Borst FT, Miihlhaus H. B., Pamin J. and Sluys L. Y., Computational modelling of localization of deformation, Proc. of the 3rd Int. Conf. Comp. Plasticity, cds.: D. R. J. Owen. E. Onateand E. Hinton, Pineridgc Press, Swansea, 483, 1992
• [3] Herle I., HypopIqStizitdt and Granulometric einfacher Korngeriiste, Publication Series of the Institute of Soil and Rock Mechanics, University Karlsruhe, Germany, 142, 1997
• [4] Herle 1. and Gudehus G., Determination of parameters of a hypoplastic model from properties of grain assemblies. Mechanics of Cohesive-Frictional Materials, (in print)
• [5] Gudehus G., Zur geotechnischen Sicherung historisch bedeutsamer Stiitzmauern mid Stiitzgewdlbe, Geotcchnik 4. 161.1993
• [6] Gudehus G., A comprehensive constitutive equation for granular materials. Soils and Foundations 36, 1, 1996
• [7] Schafer H., Versuch einer Elastizitdtstheorie des zweidimensionalen ebenen Cosserat-Kontinuums, Miszcllaneen der Angewandten Mechanik, Festschrift Tolmien, Verlag-Berlin, 1962
• [8] Stashevski S. and Kolymbas D., Vorgespannte Anker nach dem Dilatanzprinzip, Geotcchnik 4,202,1993
• [9] Tejchman J. and Bauer E., Numerical simulation of shear band with a polar hypoplastic model, Computers and Geotechnics 18, 71, 1996
• [10] Tejchman J., Modelling of shear localisation and autogeneous dynamic effects in granular bodies, Publication Series of Institute of Soil and Rock Mechanics, Karlsruhe University, Germany, 140,1997
• [11] Tejchman J., Numerical simulations of filling in silos with a polar hypoplastic constitutive model, Powder and Technology, 96/3, 221, 1998
• [12] Tejchman J., Herle I. and Wehr J., FE—studies on the influence of initial void ratio, pressure level and mean grain diameter on shear localisation, Int. Journal for Numerical and Analytical Methods in Geomechanics 23,2045,1999
• [13] Wehr J., Tejchman J., Herle I. and Gudehus G., Sand anchors- a shear zone problem. Deformation and Progressive Failure in Geomechanics, eds. A. Asaoka, T. Adachi and F. Oka, 787,1997
• [14] Wehr J., Granulatumhiillte Anker und Nagel, Publication Series of the Institute of Soil and Rock Mechanics, Karlsruhe University, Germany, 144, 1999