Constitutive model for soil amplification of ground shaking: Parameter calibration, comparisons, validation

Drosos, VA; Gerolymos, N; Gazetas, G

dc.contributor.author	Drosos, VA	en
dc.contributor.author	Gerolymos, N	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T02:08:34Z
dc.date.available	2014-03-01T02:08:34Z
dc.date.issued	2012	en
dc.identifier.issn	02677261	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29666
dc.subject.other	Centrifuge tests	en
dc.subject.other	Equivalent-linear	en
dc.subject.other	Experimental data	en
dc.subject.other	Finite difference	en
dc.subject.other	Ground-shaking	en
dc.subject.other	Layered soils	en
dc.subject.other	Nonlinear ground	en
dc.subject.other	Numerical tools	en
dc.subject.other	Parameter calibration	en
dc.subject.other	Parameter values	en
dc.subject.other	Soil amplification	en
dc.subject.other	Soil behaviors	en
dc.subject.other	Soil deposits	en
dc.subject.other	Soil nonlinearity	en
dc.subject.other	Stress-strain hysteresis loops	en
dc.subject.other	Centrifuges	en
dc.subject.other	Constitutive models	en
dc.subject.other	Damping	en
dc.subject.other	Deposits	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Hysteresis	en
dc.subject.other	Shear strain	en
dc.subject.other	Soils	en
dc.subject.other	Stress-strain curves	en
dc.subject.other	Geologic models	en
dc.subject.other	calibration	en
dc.subject.other	centrifugal model test	en
dc.subject.other	comparative study	en
dc.subject.other	constitutive equation	en
dc.subject.other	damping	en
dc.subject.other	dynamic analysis	en
dc.subject.other	dynamic response	en
dc.subject.other	experimental study	en
dc.subject.other	ground motion	en
dc.subject.other	model test	en
dc.subject.other	model validation	en
dc.subject.other	numerical model	en
dc.subject.other	parameterization	en
dc.subject.other	shear modulus	en
dc.subject.other	shear strain	en
dc.subject.other	soil analysis	en
dc.subject.other	soil mechanics	en
dc.subject.other	stress-strain relationship	en
dc.title	Constitutive model for soil amplification of ground shaking: Parameter calibration, comparisons, validation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.soildyn.2012.06.003	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.soildyn.2012.06.003	en
heal.publicationDate	2012	en
heal.abstract	A one-dimensional constitutive model, developed for the nonlinear ground response analysis of layered soil deposits, is calibrated and validated experimentally in this paper. The small number of parameters renders the model easily implementable, yet quite flexible in effectively reproducing almost any type of experimentally observed hysteretic soil behavior. In particular, the model generates realistic shear modulus and damping curves as functions of shear strain, as well as stress-strain hysteresis loops. The model is calibrated against three sets of widely-used published shear modulus and damping (G : γ and ξ : γ) curves and a library of parameter values is assembled to facilitate its use. The model, along with a developed explicit finite-difference code, NL-DYAS, for analyzing the wave propagation in layered hysteretic soil deposits, is tested against established constitutive models and numerical tools such as Cyclic1D [12] and SHAKE [42], and validated against experimental data from two centrifuge tests. Emphasis is given on the proper assessment of the Vs profile in the centrifuge tests, on the role of soil nonlinearity, and on comparisons of two inelastic codes (NL-DYAS and Cyclic1D) with equivalent linear (SHAKE) analysis. © 2012 Elsevier Ltd.	en
heal.journalName	Soil Dynamics and Earthquake Engineering	en
dc.identifier.doi	10.1016/j.soildyn.2012.06.003	en
dc.identifier.volume	42	en
dc.identifier.spage	255	en
dc.identifier.epage	274	en