eprintid: 2003
rev_number: 6
eprint_status: archive
userid: 56
dir: disk0/00/00/20/03
datestamp: 2013-12-02 13:11:20
lastmod: 2014-10-09 09:20:24
status_changed: 2013-12-02 13:11:20
type: article
metadata_visibility: show
creators_name: Paggi, Marco
creators_name: Ferro, Giuseppe
creators_name: Braga, Franco
creators_id: marco.paggi@imtlucca.it
creators_id: 
creators_id: 
title: Seismic analysis of concrete gravity dams: nonlinear fracture mechanics models and size-scale effects
ispublished: pub
subjects: TJ
divisions: CSA
full_text_status: none
keywords: Concrete Dam, Interface Crack Propagation, Nonlinear Fracture Mechanics, Seismic Loading, Size/Scale Effects
abstract: The phenomenon of interface crack propagation in concrete gravity dams underseismic loading is herein addressed. This problem is particularly important from the engineeringpoint of view. In fact, besides Mixed-Mode crack growth in concrete, dam failure is oftenthe result of crack propagation along the rock-concrete interface at the dam foundation. Toanalyze such a problem, the generalized interface constitutive law recently proposed by the¯rst author is used to proper modelling the phenomenon of crack closing and reopening at theinterface. A damage variable is also introduced in the cohesive zone formulation in order topredict crack propagation under repeated loadings. Special attention is given to the complexityresulting from the solution of the nonlinear dynamic problem and to the choice of the interfaceconstitutive parameters, taking into account the important size-scale e®ects observed in thesecyclopic structures. Numerical examples will show the capabilities of the proposed approachwhen applied to concrete gravity dams.
date: 2011
publication: Applied Mechanics and Materials
volume: 82
publisher: Scientific.Net
pagerange: 374-379
id_number: doi:10.4028/www.scientific.net/AMM.82.374
refereed: TRUE
issn: 1662-7482
official_url: http://dx.doi.org/10.4028/www.scientific.net/AMM.82.374
citation:   Paggi, Marco and Ferro, Giuseppe and Braga, Franco  Seismic analysis of concrete gravity dams: nonlinear fracture mechanics models and size-scale effects.  Applied Mechanics and Materials, 82.  pp. 374-379.  ISSN 1662-7482      (2011)