Stay cables reference list
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The new railway linking Bologna to Milan is part of the High Speed Lines network at present under construction in Italy.
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During the October 2000 flood almost all the watercourses in the province of Turin that were tributaries of the Po river underwent exceptional high waters and consequent flooding, which caused enormous economic and environmental damage.
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The existing double railway bridge was too low and too old. The crossing with the Twente canal was too low; the bridge was technically at the end of its lifetime. A unique opportunity to design and build another railway cable-stayed bridge in the Netherlands.
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Although the Paranaíba Bridge was the first cable-stayed bridge to break ground in Brazil
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The “Sea Pallini” cable stayed bridge, crossing the main highway reaching the new airport of Athens...
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High speed train line Milan – Bologna
18 12 2006The new railway linking Bologna to Milan is part of the High Speed Lines network at present under construction in Italy.
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The "Colletta" cable stayed bridge over the Sangone creek
16 07 2005During the October 2000 flood almost all the watercourses in the province of Turin that were tributaries of the Po river underwent exceptional high waters and consequent flooding, which caused enormous economic and environmental damage.
[...]
Arch bridge over the Twente canal
06 07 2005The existing double railway bridge was too low and too old. The crossing with the Twente canal was too low; the bridge was technically at the end of its lifetime. A unique opportunity to design and build another railway cable-stayed bridge in the Netherlands.
[...]
Cable-stayed bridge over the River Paranaíba
04 11 2003Although the Paranaíba Bridge was the first cable-stayed bridge to break ground in Brazil
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Sea Pallini bridge, Athens
02 10 2003The “Sea Pallini” cable stayed bridge, crossing the main highway reaching the new airport of Athens...
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Cable-stayed bridge over the River Paranaíba
published: 04 11 2003
Although the Paranaíba Bridge was the first cable-stayed bridge to break ground in Brazil
Although the Paranaíba Bridge was the first cable-stayed bridge to break ground in Brazil, the project was dogged by political infighting resulting in years of paralysis. When the bridge was finally inaugurated in 2003, after 10 years of stop-and-go, it was no longer the first in Brazil.
The completion of the bridge reduced the transport distance for agricultural produce between the western-central regions of Brazil to the Atlantic ports and the main consumer markets of the south-east by 300 km.
The design of the pylons required that each leg of the two “A” type pylons be climb-formed at an angle of 7º to a height of 74m where they met to form the vertical top section. Due to the pyramid style section of the pylons, special adjustable steel forms were utilised. The 35MPa strength concrete utilised for the pylons, permitted the repositioning of the 3m forms at 72-hour intervals.
To help maintain equilibrium during construction, the first stays to be partially installed were the longest, 52-strand cables between the pylon top and the abutment block. To counterbalance the forces induced by these stays, a 12 strand temporary tendon was installed horizontally between the top of the two pylons.
The balanced cantilever concrete bridge deck was cast in-situ at 10m intervals. The deck formwork was supported by a moveable steel truss which was fixed onto the previously concreted section. Each 10m section was then post-tensioned to the previous section and the stay cables were installed through the cast-in, steel form tubes at the lateral extremities of the section. This process was repeated on both sides of both pylons of the symmetrical superstructure until the main span was bridged and the abutments were reached. On completion, the topography and the loading of the deck was fine-adjusted using hydraulic regulating jacks applied on the anchorages at the lower extremity of the stay-cables.
In October 2004, by presidential decree, the bridge was renamed the “Presidente Tancredo de Almeida Neves Bridge” in honour of the illustrious Minas Gerais politician and ex president-to-be.
The completion of the bridge reduced the transport distance for agricultural produce between the western-central regions of Brazil to the Atlantic ports and the main consumer markets of the south-east by 300 km.
The design of the pylons required that each leg of the two “A” type pylons be climb-formed at an angle of 7º to a height of 74m where they met to form the vertical top section. Due to the pyramid style section of the pylons, special adjustable steel forms were utilised. The 35MPa strength concrete utilised for the pylons, permitted the repositioning of the 3m forms at 72-hour intervals.
To help maintain equilibrium during construction, the first stays to be partially installed were the longest, 52-strand cables between the pylon top and the abutment block. To counterbalance the forces induced by these stays, a 12 strand temporary tendon was installed horizontally between the top of the two pylons.
The balanced cantilever concrete bridge deck was cast in-situ at 10m intervals. The deck formwork was supported by a moveable steel truss which was fixed onto the previously concreted section. Each 10m section was then post-tensioned to the previous section and the stay cables were installed through the cast-in, steel form tubes at the lateral extremities of the section. This process was repeated on both sides of both pylons of the symmetrical superstructure until the main span was bridged and the abutments were reached. On completion, the topography and the loading of the deck was fine-adjusted using hydraulic regulating jacks applied on the anchorages at the lower extremity of the stay-cables.
In October 2004, by presidential decree, the bridge was renamed the “Presidente Tancredo de Almeida Neves Bridge” in honour of the illustrious Minas Gerais politician and ex president-to-be.
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| Project | : | Cable-stayed bridge over the River Paranaíba |
| Location | : | The division between the States of Minas Gerais and Mato Grosso do ul, Brazil |
| Type | : | Double “A” type pylon, concrete, cast-in situ, cable-stayed bridge. |
| Total length of the bridge | : | 662 m. |
| Main span | : | 350 m. |
| Deck width | : | 16 m. |
| Pylon height | : | 110m from river level |
| Stay cable strand | : | 632 tons |
| No. of stays | : | 140 |
| Longest stay cable | : | 192.8 m. |
| Max. no. of strands per anchorage | : | 52 - 15.7 mm. dia. |
| Main Client | : | Federal Government (Delegated to Federal Highway Dept. of Minas Gerais) |
| Contractor | : | CONSTRUTORA QUEIROZ GALVÃO (Brazil) |
| Designer | : | NORONHA ENGENHARIA (Brazil) |
| Period | : | 11/1993 – 10/2003 |
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