• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2013.tde-01082013-150909
Document
Author
Full name
Érica Santos Matos
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Larocca, Ana Paula Camargo (President)
Guimarães, Carlos Alberto Bandeira
Kabbach Junior, Felipe Issa
Title in Portuguese
Estudo da influência do posicionamento de barreiras rígidas centrais na visibilidade de projeto em rodovias de pista dupla.
Keywords in Portuguese
Barreira
Distância de visibilidade de parada
Projeto geométrico viário
Abstract in Portuguese
A distância de visibilidade de parada deve ser garantida ao longo de toda a extensão de uma rodovia por questões de segurança. Elementos da seção transversal podem se tornar obstruções que interferem nas distâncias de visibilidade do projeto. Este é o caso do uso de barreiras ao invés de canteiros centrais em rodovias bidirecionais, especialmente ao longo de curvas à esquerda. Desta forma, este trabalho analisa o posicionamento de barreiras em cenários hipotéticos aclives planos e declives com uso de simulações gráficas tridimensionais. O afastamento lateral da barreira, em relação à pista de rolamento, foi definido em função de cada velocidade de projeto e de cada raio de curva horizontal analisados. Os diagramas gerados foram comparados com modelo de afastamento de objetos fixos em curvas horizontais, presente como recomendações em manuais nacionais. As diferenças encontradas indicam a viabilidade da metodologia utilizada, em que o projeto foi considerado como um todo, o qual se desenvolve tridimensionalmente.
Title in English
Study of the influence of placement of central rigid barriers in project visibility on dual highways.
Keywords in English
Barrier
Highway geometric design
Stopping sight distance
Abstract in English
Stopping Sight Distance must be guaranteed throughout of a highway for safety reasons. However, cross section elements can become obstructions which interfere on design sight distances. This occurs when barriers are used instead of medians on bidirectional highways, especially along left curves. Therefore, this paper analyzes the barriers placement on hypothetical scenarios upgrades, plans and downgrades using three-dimensional graphics simulations. The lateral offset of the barrier in relation to the roadway was defined according to each design speed and each radius of the horizontal curve analysis. For each scenario were generated diagrams, which use compared with offset model of fixed objects on horizontal curves presents as recommendation in national manuals. The differences indicate the viability of the methodology used, where the project was considered as a whole, which develops three-dimensionally.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2013-08-08
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.