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Doctoral Thesis
DOI
10.11606/T.18.2004.tde-04072006-111753
Document
Author
Full name
Yuri Ivan Maggi
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2004
Supervisor
Committee
Goncalves, Roberto Martins (President)
Fruchtengarten, Julio
Queiroz, Gílson
Ribeiro, Luiz Fernando Loureiro
Savassi, Walter
Title in Portuguese
Análise do comportamento estrutural de ligações parafusadas viga-pilar com chapa de topo estendida
Keywords in Portuguese
aço
estruturas
ligações
semi-rígidas
viga-pilar
Abstract in Portuguese
Este trabalho apresenta uma análise numérica e experimental sobre o comportamento estrutural de ligações parafusadas viga-pilar com chapa de topo estendida. Discute-se, em particular, o comportamento da chapa de topo e dos parafusos na determinação da capacidade resistente dessas ligações. A análise de resultados numéricos é utilizada como base para as discussões neste trabalho e a modelagem numérica, realizada em elementos finitos com o software ANSYS, incluiu modelos tridimensionais de ligações com chapa de topo estendida e de ligações duplo “T”. Com os resultados numéricos e experimentais, os mecanismos de transferência dos esforços entre viga e pilar e os mecanismos de plastificação da chapa de topo e dos parafusos são observados, avaliando-se as linhas de plastificação na chapa de topo em confronto com a metodologia proposta pelo Eurocode 3 na determinação dos perfis “T” equivalentes. Para esses fatores, observou-se que os modos de falha indicados pelo Eurocode 3 não representam satisfatoriamente o comportamento das ligações analisadas. A modelagem numérica, por sua vez, mostrou-se generalista e representativa como ferramenta para análises paramétricas e como complemento de análises experimentais
Title in English
Analysis of the structural behavior of bolted beam-column extended end plate connections
Keywords in English
beam-column
connections
semi-rigid
steel
structures
Abstract in English
This work presents a numerical and experimental analysis on the structural behavior of bolted beam-column extended end plate connections. The behavior of the end plate and bolts used in the calculations of the end plate strength is specially discussed. Numerical results are used as basis to the discussions presented in this work and the modeling methodology, with FE models built with the ANSYS code, included 3D models of extended end plate and T-stub connections. The beam-to-column load transfer mechanisms and the yielding mechanisms at end plates and bolts are observed using numerical and experimental results. The yielding lines at the end plate are evaluated against the methodology proposed by Eurocode 3 for the calculations on the equivalent T-stub. Regarding the aforementioned factors, it is shown that the collapse modes indicated by Eurocode 3 do not represent satisfactorily the behavior of the analyzed connections. The numerical modeling was found to be general in application and reliable as a tool for parametric analyses and as a complement to experiments
 
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2004DO_YuriIMaggi.pdf (5.78 Mbytes)
Publishing Date
2006-07-04
 
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