A model for grain-crushing-induced landslides-Application to Nikawa, Kobe 1995

Gerolymos, N; Gazetas, G

dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:25:42Z
dc.date.available	2014-03-01T01:25:42Z
dc.date.issued	2007	en
dc.identifier.issn	0267-7261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17735
dc.subject	Excess pore-water pressure	en
dc.subject	Grain crushing	en
dc.subject	Landslide evolution	en
dc.subject	Nikawa landslide	en
dc.subject	Particle breakage	en
dc.subject	Seismic triggering	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Compressive stress	en
dc.subject.other	Constitutive models	en
dc.subject.other	Pore pressure	en
dc.subject.other	Seismic response	en
dc.subject.other	Sensitivity analysis	en
dc.subject.other	Shear bands	en
dc.subject.other	Soil liquefaction	en
dc.subject.other	Stress-strain curves	en
dc.subject.other	Grain crushing	en
dc.subject.other	Particle breakage	en
dc.subject.other	Sliding-surface liquefaction	en
dc.subject.other	Landslides	en
dc.subject.other	cyclic loading	en
dc.subject.other	deformation mechanism	en
dc.subject.other	displacement	en
dc.subject.other	dynamic analysis	en
dc.subject.other	landslide	en
dc.subject.other	liquefaction	en
dc.subject.other	pore pressure	en
dc.subject.other	porewater	en
dc.subject.other	rigidity	en
dc.subject.other	sensitivity analysis	en
dc.subject.other	shear	en
dc.subject.other	sliding	en
dc.subject.other	stress-strain relationship	en
dc.subject.other	Asia	en
dc.subject.other	Eurasia	en
dc.subject.other	Far East	en
dc.subject.other	Honshu	en
dc.subject.other	Hyogo	en
dc.subject.other	Japan	en
dc.subject.other	Kinki	en
dc.subject.other	Kobe	en
dc.title	A model for grain-crushing-induced landslides-Application to Nikawa, Kobe 1995	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.soildyn.2007.01.003	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.soildyn.2007.01.003	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	A novel method is developed, motivated by one of the mysteries of the Hyogoken-Nambu (Kobe): the Nikawa landslide. To this end, prompted by the hypothesis of "sliding-surface liquefaction" advocated by Sassa [Development of a new cyclic loading ring shear apparatus to study earthquake-induced-landslides. Report for grant-in-aid for development of scientific research by the Ministry on Education, Science and Culture, Japan (project no. 03556021), 1994, p. 1-106; Keynote lecture: access to the dynamics of landslides during earthquakes by a new cyclic loading high-speed ring shear apparatus. In: Proceedings of the sixth international symposium on landslides, 1992. In: Landslides, vol. 3. Balkema: Rotterdam; 1995. p. 1919-39], a dynamic analysis of the early stages of an earth slide is presented considering two mechanically coupled sub-structures: (a) the rapidly deforming shear band at the base of the slide and (b) the accelerating sliding mass modeled as a rigid body. The proposed model for sliding is based on: (i) the concept of high pore-water pressure generation by grain crushing along the sliding surface (proposed by Sassa et al. in 1995), (ii) an experimental model developed by Hardin [Crushing of soil particles. J Geotech Eng 1985; 111(10): 1177-92] for crushing of soil particles under compression and shear, expressed with a set of developed equations governing the mechanism of breakage, and (iii) the hysteretic stress-strain Bouc-Wen-type constitutive model coupled with the Coulomb friction law. An attempt is made to adjust the model parameters to Sassa's experimental data in ring-shear tests. The method leads to a reasonable prediction of the large displacement of the Nikawa landslide. A sensitivity analysis is also carried out for the influence of key model parameters (e.g. shape, crushing hardness, void ratio, grain size distribution, effective normal stress) on the pore-pressure rise due to particle breakage. (c) 2007 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	Soil Dynamics and Earthquake Engineering	en
dc.identifier.doi	10.1016/j.soildyn.2007.01.003	en
dc.identifier.isi	ISI:000246632700001	en
dc.identifier.volume	27	en
dc.identifier.issue	9	en
dc.identifier.spage	803	en
dc.identifier.epage	817	en