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Master's Dissertation
DOI
10.11606/D.3.2007.tde-07082007-112420
Document
Author
Full name
Rafael Vinícius Basso
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2007
Supervisor
Committee
Cruz, Paulo Teixeira da (President)
Albuquerque Júnior, Fernando Saboya
Pinto, Carlos de Sousa
Title in Portuguese
Estudo tensão-deformação de um enrocamento visando barragens de enrocamento com face de concreto.
Keywords in Portuguese
Aterros
Barragem de enrocamento com face de concreto
Deformabilidade
Abstract in Portuguese
O crescimento do número de Barragens de Enrocamento com Face de Concreto (BEFC) no Brasil e no mundo e os problemas relacionados com a movimentação da face motivaram o desenvolvimento deste estudo sobre o comportamento mecânico do enrocamento. Geralmente, as previsões dos movimentos diferenciais do maciço são feitas com base nas características de deformabilidade do material. Este trabalho apresenta um estudo de tensão-deformação de enrocamento baseado em análise numérica de uma seção de barragem de grande altura, com o objetivo de definir o estado e as trajetórias de tensões que influenciam os valores dos parâmetros de deformabilidade. Baseado nas condições de carregamento previstas para o maciço de enrocamento, foi desenvolvida a programação e as metodologias dos ensaios laboratoriais. A partir dos resultados destes ensaios foi possível estimar os parâmetros de deformabilidade do enrocamento a serem utilizados em estudos tensão-deformação.
Title in English
Stress-strain study for one rockfill aiming concrete face rockfill dam.
Keywords in English
Concrete face rockfill dams
Deformability
Embankments
Abstract in English
The important growth in the number of Concrete Face Rockfill Dams (CFRD's) in Brazil and in the World, and the reported problems related to movements of the concrete slab, motivated the present study of mechanical behavior of the rockfill. In general, predictions of the differential movements within the rockfill mass are based on the deformation properties of the rockfill materials. This work presents a stress-strain study of the rockfill mass, based on a numerical analysis of a high dam cross section, aiming to define the stress state and stress paths that influence the deformability parameters. Based on the loading condition estimated for the rockfill mass, the program and the methodology for the laboratorial tests was set. From these test results it was possible to estimate the deformability parameters of the rockfill to be used in stress-strain analysis.
 
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Publishing Date
2007-08-21
 
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