Box Girder Bridges
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Seismic Evaluation of Horizontally Curved Bridges Subjected to Near-Field Ground Motions
Abstract Horizontally curved bridges have more complex seismic behavior than straight bridges and have been more vulnerable to earthquakes. The present study aimed to evaluate the seismic response of concrete bridges with straight and arched box girder decks in isolated and non-isolated states. The results indicated that increasing the curvature of the non-i
Lat. Am. j. solids struct.. Publicado em: 14/03/2019
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2. A simplified method to estimate the fundamental frequency of skew continuous multicell box-girder bridges
Here Fundamental Frequency is the main factor used to calculate the vibration of a vehicle when passing across a bridge. With knowledge of the fundamental frequency, bridges can be evaluated and designed in such a manner so as to avoid the critical range of 1.5 Hz to 4.5 Hz, which is occupied by most vehicles. Therefore it is crucial to develop a reliable me
Lat. Am. j. solids struct.. Publicado em: 2014-08
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3. Transverse load distribution of skew cast-in-place concrete multicell box - girder bridges subjected to traffic condition
Concrete multicell box-girder bridges are a common choice among the designers for various ranges of bridges. In order to provide safer and greater speed of traffic, the roadway is built as straight as possible. The use of skewed bridges has increased considerably in the recent years for roadway. The skewed bridges have quite different mechanical behavior fro
Lat. Am. j. solids struct.. Publicado em: 2013-03
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4. Reavaliação do trem-tipo à luz das cargas reais nas rodovias brasileiras. / Re-assessment of bridge load model based on traffic data of Brazilian highways.
This work presents a model to verify the design traffic load model of the Brazilian code, based on real traffic at road bridges. First, it compares Brazilian load model with Eurocode 1 and AASHTO Standard and LRFD Specifications. Then, recent development and research on bridge traffic load models are presented, in Brazil and other countries. A verification m
Publicado em: 2006
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5. Web design of box-girders concrete bridges. / Dimensionamento das almas de pontes celulares.
Box-girders have received a growing attention in the field of prestressed concrete bridges. The modern trend is to build wider unicellular bridges, which leads to a considerable increase in the transverse bending moment acting mainly in their webs. These are subjected to a combination of shear force and transverse bending moments, which may reach important v
Publicado em: 2003
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6. Protensão em pontes celulares curvas. / Prestressing of curved box-girder bridges.
This work compares the results from a practical and simplified method and the Finite Element Method to determinate section efforts in prestressed box-girder curved bridges. The first part, theoretical, introduces the basic principles of the cellular curved beams, showing the differences of its behavior comparing with straight beams. Next, prestressing of con
Publicado em: 2001