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

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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


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