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Critical seismic issues for existing steet bridges
Buffalo, New York; U.S. Multidisciplinary Center for Earthquake Engineering Research (MCEER); Apr. 1999. 94 p. ilus.(Technical Report MCEER, 99-0013).
Monografia em En | Desastres | ID: des-12605
Biblioteca responsável: CR3.1
Localização: CR3.1; DES
ABSTRACT
This report assesses the perfomance of existing steel bridges in the past earthquakes. There is an identification of the areas in existing steel bridge structures that are seismically vulnerable. Among the examined components there are steel columns, steel tower bents, steel superstructures (particularly steel trusses), girder cross-frames, and steel connections. Vulnerable areas and details are identified, and recommendations for improved designs and retrofit techniques are made. Research needs are identified where existing knowledge is lacking. There is an examination of the three most common lateral force existing systems MRF's moment resisting frames; CBF's concentrically braced frames and EBF's; eccentrically braced frames. It indicates that any of them can provide adequate seismic structural ductility. There is also an analysis of X-braces and X-braces and V-braced bridges piers as a way of getting potential structural ductility. It has a lis of illustrations, which include configurations, pier designs, axial loads and analytical models of connections, among others
Assuntos
Coleções: Bases de dados temática Base de dados: Desastres Assunto principal: Aço / Engenharia Sísmica / Edificação em Ponte / Resposta Sísmica Idioma: Inglês Revista: Technical Report MCEER Ano de publicação: 1999 Tipo de documento: Monografia
Coleções: Bases de dados temática Base de dados: Desastres Assunto principal: Aço / Engenharia Sísmica / Edificação em Ponte / Resposta Sísmica Idioma: Inglês Revista: Technical Report MCEER Ano de publicação: 1999 Tipo de documento: Monografia
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