Modifying the Barcelona Basic Model to account for residual void ratio and subsequent decrease of shear strength relative to suction

Bardanis, ME; Kavvadas, MJ

dc.contributor.author	Bardanis, ME	en
dc.contributor.author	Kavvadas, MJ	en
dc.date.accessioned	2014-03-01T02:51:45Z
dc.date.available	2014-03-01T02:51:45Z
dc.date.issued	2008	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35626
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-76649121261&partnerID=40&md5=ff4f1dae02b4dc515cce86d2bbca584e	en
dc.subject.other	Barcelona	en
dc.subject.other	Basic models	en
dc.subject.other	Granular soils	en
dc.subject.other	New parameters	en
dc.subject.other	Residual voids	en
dc.subject.other	Stabilisation	en
dc.subject.other	Unsaturated soil	en
dc.subject.other	Void ratios	en
dc.subject.other	Volume change	en
dc.subject.other	Volumetric deformation	en
dc.subject.other	Yield surface	en
dc.subject.other	Forecasting	en
dc.subject.other	Geologic models	en
dc.subject.other	Soils	en
dc.subject.other	Shear strength	en
dc.title	Modifying the Barcelona Basic Model to account for residual void ratio and subsequent decrease of shear strength relative to suction	en
heal.type	conferenceItem	en
heal.publicationDate	2008	en
heal.abstract	The paper presents modifications to the Barcelona Basic Model to account for two aspects of unsaturated soil behaviour affecting the predictions for both fine-grained and granular soils: stabilisation of void ratio and different patterns of shear strength evolution with increasing suction. The first modification improves predictions of volume change at suctions close to the residual state. The second modification improves predictions of shear strength evolution with increasing suction for various types of soils. It is shown how the proper selection of values for the new parameters introduced allows the prediction of either continuously increasing shear strength, or stabilising shear strength, or even subsequently decreasing shear strength after an initial increase. The paper concludes with a presentation of the differences caused by these modifications in the shape of the yield surface in the p - q - s space and the possible shape of the boundary of plastic volumetric deformation in the p-s plane. © 2008 Taylor & Francis Group, London.	en
heal.journalName	Unsaturated Soils: Advances in Geo-Engineering - Proceedings of the 1st European Conference on Unsaturated Soils, E-UNSAT 2008	en
dc.identifier.spage	589	en
dc.identifier.epage	595	en