Centrifuge modelling of a soil nail retaining wall

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dc.contributor.author Jacobsz, S.W. (Schalk Willem)
dc.date.accessioned 2013-06-21T13:42:46Z
dc.date.available 2013-06-21T13:42:46Z
dc.date.issued 2013-04
dc.description.abstract This paper describes a physical model of a soil nail retained excavation face which was tested in the new geotechnical centrifuge at the University of Pretoria. As centrifuge modelling is new in South Africa, a short introduction to this technique is presented. The mobilisation of soil nail forces and their maximum values in response to excavation in the model were compared to measurements recently made in an instrumented 10m high soil nail retaining structure for the Gautrain system in Pretoria. Results were also compared to predictions made using a simple failure wedge analysis and a database of eleven full-scale instrumented soil nail walls from the literature. The centrifuge model data compared well with both full-scale situations and theoretical analyses. The results suggest that soil nail forces measured in the centrifuge are conservative due to the mobilisation of a portion of the shear strength of the model soil during the acceleration of the centrifuge, leaving less un-mobilised shear strength available to resist loads resulting from the excavation. en_US
dc.description.librarian am2013 en_US
dc.description.uri http://www.journals.co.za/ej/ejour_civileng.html en_US
dc.identifier.citation Joacobsz, SW 2013, 'Centrifuge modelling of a soil nail retaining wall', Journal of the South African Institution of Civil Engineering, vol. 55, no. 1 pp. 85-93. en_US
dc.identifier.issn 1021-2019
dc.identifier.uri http://hdl.handle.net/2263/21693
dc.language.iso en en_US
dc.publisher South African Institution of Civil Engineering en_US
dc.rights South African Institution of Civil Engineering en_US
dc.subject Soil nail retaining wall en_US
dc.subject Centrifuge modelling en_US
dc.title Centrifuge modelling of a soil nail retaining wall en_US
dc.type Article en_US


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