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 Guamá
published: 04 11 2002
The Guamá Bridge is key to one of the largest-ever urban-expansion, infrastructure projects in the State of Pará
The Guamá Bridge is key to one of the largest-ever urban-expansion, infrastructure projects in the State of Pará, linking Belem to the Port of Vila do Conde and other nearby towns. The project includes 66 km of highway and a total of 4.57 km of bridges.
The Guamá Bridge has a total length of almost 2 km which includes two approach viaducts of 742m and 653m and a central, three-span, 582.5m cable-stayed bridge with a central span of 320 m. The deck accommodates two road lanes plus an emergency path and two pedestrian walkways.
The two, 102m high, pairs of concrete pylons were erected utilising two construction methods. Up to the 74.5m level they were slip-formed and the remainder was completed by climb-forming.
The original design envisaged the cast in-situ method for the deck construction, but time constraints, environmental conditions and the advantages of eliminating falsework, led to the choice of pre-cast segmental erection.
The 69 pre-cast, box girder segments were manufactured in industrial scale at the 72,000 m² prefabrication yard, together with the approach viaduct beams, piles and other concrete elements. State-of-the-art casting and curing methods enabled concrete strength of 20 MPa after only 12 hours, facilitating the production and stockpiling of segments.
The 145 ton pre-cast segments were floated out to the piers on barges and lifted 30m up to the deck level by a system of hydraulic jacks acting from an overhead truss, cantilevered on the previously erected segment. (The first deck segment on either side of each pylon was cast in-situ). After alignment of the segments they were post-tensioned to the structure, followed by the installation of the stay cables through the pair of specifically angled form-tubes cast-in on the lateral extremities of the box segment.
On completion of this erection sequence, 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.
The approach viaducts have typical spans of 45 m, and the decks are composed of pre-cast, pre-stressed concrete “I” beams, connected by transverse beams and supporting a continuous upper concrete slab.
The Guamá Bridge has a total length of almost 2 km which includes two approach viaducts of 742m and 653m and a central, three-span, 582.5m cable-stayed bridge with a central span of 320 m. The deck accommodates two road lanes plus an emergency path and two pedestrian walkways.
The two, 102m high, pairs of concrete pylons were erected utilising two construction methods. Up to the 74.5m level they were slip-formed and the remainder was completed by climb-forming.
The original design envisaged the cast in-situ method for the deck construction, but time constraints, environmental conditions and the advantages of eliminating falsework, led to the choice of pre-cast segmental erection.
The 69 pre-cast, box girder segments were manufactured in industrial scale at the 72,000 m² prefabrication yard, together with the approach viaduct beams, piles and other concrete elements. State-of-the-art casting and curing methods enabled concrete strength of 20 MPa after only 12 hours, facilitating the production and stockpiling of segments.
The 145 ton pre-cast segments were floated out to the piers on barges and lifted 30m up to the deck level by a system of hydraulic jacks acting from an overhead truss, cantilevered on the previously erected segment. (The first deck segment on either side of each pylon was cast in-situ). After alignment of the segments they were post-tensioned to the structure, followed by the installation of the stay cables through the pair of specifically angled form-tubes cast-in on the lateral extremities of the box segment.
On completion of this erection sequence, 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.
The approach viaducts have typical spans of 45 m, and the decks are composed of pre-cast, pre-stressed concrete “I” beams, connected by transverse beams and supporting a continuous upper concrete slab.
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| Project | : | Cable-stayed bridge over the River Guamá |
| Location | : | State of Pará, Northern Brazil, (40 km from Belem) |
| Type | : | Two “H” type pylon, pre-cast concrete segmental, cable-stayed bridge |
| Total length of the bridge | : | 1987 m (Cable-stayed section – 582.5m) |
| Main span | : | 320 m. |
| Deck width | : | 14.2 m. |
| Pylon height | : | 102 m from foundation block |
| Stay cable strand | : | 600 tons |
| No. of stays | : | 152 |
| Longest stay cable | : | 172.9 m. |
| Max. no. of strands per anchorage | : | 61 - 15.7 mm. dia. |
| Main Client | : | GOVERNMENT OF THE STATE OF PARÁ, Brazil |
| Contractor | : | CONSORTIUM NOVO GUAMÁ (CONSTRUBASE-LIDER/PAULITEC/ PROBASE/CIDADE), Brazil |
| Designer | : | STUDIO DE MIRANDA ASSOCIATI (Italy) – ENESCIL (Brazil) |
| Period | : | 02/2001-10/2002 |
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