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Ponte estaiada Octavio Frias de Oliveira
Sao Paulo

O projeto tem grandes dimensões, além de abranger uma ponte de dois braços que passam sobre o Rio Pinheiros, tem como destaque um mastro de concreto em forma de X com 138 metros de altura, que as sustenta por meio de estais. O complexo viário Real Parque é uma das cinco maiores estruturas da capital paulista.

A ponte possui duas pistas estaiadas em curvas independentes de 60º (uma para cada mão) que cruzam o Rio Pinheiros e suas marginais rodoviárias e férreas. No total, cada sentido da ponte tem 290 metros de comprimento. A ponte e os viadutos têm 1600 metros no total.
Sob o mastro em "X", que suporta os estais, se cruzam três vias em níveis diferentes: as duas pistas suspensas da ponte e a via marginal de manutenção, no nível do solo. Além disso, uma linha de transmissão elétrica percorre a margem do rio pelo subterrâneo da via demanutenção e o Córrego Água Espraida desagua no rio pinheiros passando por entre os mastros. A torre tem 138 metros de altura, o equivalente a um prédio de 46 andares. Escadas de aço internas à torre, com patamares a cada 6 metros, dão acesso ao mastro para serviços de manutenção.
A Ponte Octavio Frias de Oliveira é a única ponte estaiada no mundo com duas pistas em curva conectadas a um mesmo mastro. Por exemplo, em Tóquio, a Ponte Katsushika (inaugurada em 1986) tem traçado curvo, mas com uma única pista. A forma da estrutura não decorre de razões arquitetônicas e sim de uma demanda estrutural e das restrições geométricas do entorno.
144 estais mantêm suspensos dois trechos de 900 metros de comprimento.Há entre doze e 25 cabos de aço em cada estai. Juntos, os estais pesam em torno de 462 000 kg. Eles são encapados por um tubo amarelo de polietileno de elevada resistência mecânica, tolerantes a ação de raios ultravioleta, com a função de proteger o aço contra corrosão.

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Copyright: Dudu Tresca
Type: Spherical
Resolution: 7600x3800
Uploaded: 16/09/2008
Updated: 07/10/2014
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Tags: river; street; transit
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