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Master's Dissertation
DOI
10.11606/D.3.2017.tde-13042017-114109
Document
Author
Full name
Patrícia Murad Quintero
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Mazzilli, Carlos Eduardo Nigro (President)
Oyamada, Rui Nobhiro
Santos, Sergio Hampshire de Carvalho
Title in Portuguese
Análise sísmica no domínio do tempo versus no domínio da frequência para uma ponte em seção celular.
Keywords in Portuguese
Acelerogramas
ADINA
Análise espectral
Domínio do tempo
Pontes
Terremotos
Abstract in Portuguese
Este trabalho apresenta um estudo comparativo entre análises no domínio do tempo e análises espectrais, como forma de sugerir uma abordagem alternativa para o projeto de pontes de seção celular submetidas à ação de terremotos. Com esse propósito, desenvolveu-se um programa em linguagem JAVA para a geração de sismos artificiais, usando como base o Eurocode 8. A saída do programa foi utilizada para o desenvolvimento de um estudo de caso, que consiste em uma modelagem simplificada no software ADINA, de um vão de 21 m da Ponte Alverca, em Portugal. Após a extração e comparação de resultados dos dois métodos, é possível perceber que o método alternativo proposto - no domínio do tempo, que consiste na aplicação de acelerogramas artificiais ao modelo - possui resultados bastante coerentes com a análise espectral, além de ser mais recomendado se efeitos geométricos ou fisicamente não lineares forem considerados na modelagem.
Title in English
Time-verssus frequency-domain seismic analysis of a cell-section bridge.
Keywords in English
Accelerograms
ADINA
Bridges
Earthquakes
Spectral analysis
Time-domain
Abstract in English
This work presents a comparative study between time-domain analysis and spectral analysis, as a way of suggesting an alternative approach for treating cell section bridges subjected to earthquakes. To reach this goal, it was developed a program in JAVA language for the artificial earthquakes generation, using the Eurocode 8 as a basis. The program output was used for a case study that consists in a simplified modeling using ADINA software, of a twenty-one-meter-long span of Alverca Bridge, in Portugal. After the results extraction of both methods, it is possible to notice that the alternative method - in the time-domain, which consists of the application of artificial accelerograms to the model - has fairly consistent results with spectral analysis, not to mention that it is the most suitable one, in case geometrical or physical non-linearities are considered in the modelling.
 
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Publishing Date
2017-04-18
 
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