Rehabilitation and Strengthening Design/ Bridge widening design

Bridge above Caldo River
Location: Gerês, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2005-2009
Description:

This project refers to the inspection and rehabilitation of the bridge above Caldo River in Gerês.

The bridge has a length of 199m, with major spans of 23m.  The bridge deck is composed by two reinforced concrete beams with parabolic layout. The piers are made of masonry, have a lusangular hollow shape with small holes along the height and are completed by the water reservoir.

The repair included the placement of expansion joints, correcting highlights and delamination of concrete, sealing of cracks, waterproofing the deck and paint.

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Angeja Bridge above Vouga River
Location: Portugal
Entity: Estradas de Portugal
Client: 92´Arquitectos
Dates(beginning/end) 2001-2003
Description:

This project refers to the inspection and rehabilitation of Angeja Bridge over the Vouga River.

The crossing is made by an isotactic deck composed by Gerber beams with variable inertia with a total length of 250.60 m (11 spans). The wall-pillars have a rounded rectangular section and the foundations are indirect.

The works included the construction of new piles for strengthening of the foundation and rebuild of the deck girders in the tip of the cantilevers to strengthening the zones where the bearings for the simple supported spans are located.

The repair was made with concrete grouting, injection of cracks, replacement of the expansion joints and paint.

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Açude Bridge over Mondego River and Access Viaducts
Location: Coimbra, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2008-2010
Description:

This project refers to the inspection and rehabilitation of the bridge.

The project covers the Açude Bridge located in Coimbra, the Main Viaduct of the IC2 which develops parallel to Fernão Magalhães Avenue and their respective accesses, with a total length close to of 2250m. The structure consists pre-stressed slabs with spans of about 25 m, supported by circular cross-section piers.

The reinforcement applied to for the piers, with integral replacement, bearing replacement, pier jacketing, and shear resistance reinforcement. At the abutments took place foundation strengthening with jet grouting columns.

The repair included the replacement of bearings, grouting and injection of cracks and painting.

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Nossa Senhora da Guia Bridge located in Ponte de Lima
Location: Ponte de Lima, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2009-2010
Description:

This project refers to the inspection and rehabilitation of the bridge.

The total length of the bridge is 250m, with major spans of 58m. The bridge is characterized by a longitudinally prestressed concrete superstructure transversely reinforced. The cross section of the bridge deck is a two cell box girder, with parabolically variable height between 1.45m and 2.90m.

The reinforcement of the structure consisted in: bonded carbon laminates for strengthening of the upper slab; external prestress; redistribution of the bearings (in terms of rigidity), adoption of hydraulic damper devices and additional resistance elements (transversal bearings and pile caps) to improve the seismic performance; anchors in the abutment walls. 

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Ocreza Bridge
Location: Portugal
Entity: SCUTVIAS
Dates(beginning/end) 2007 - 2009
Description:

This project refers to the inspection and rehabilitation of the bridge.

The bridge develops along eight continuous spans, a length of 390m, with major spans of 51m.

The deck bridge consists in a box girder section of prestressed concrete supported on piers of reinforced concrete.

The reinforcement consisted in connecting the webs to the upper flange of the girder, fixation of steel plates to the slab and placing carbon-fiber reinforced polymer (CFRP) in the pre-slabs.

The repair included the injection of cracks in the anchorage block, correcting highlights and delamination of concrete in the pre-slabs, replacing the expansion joints in the abutments and waterproofing the deck.

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Bridge above Vouga River in motorway A1
Location: A1, Vouga River, Portugal
Entity: BRISA
Dates(beginning/end) 2004 - 2009
Description:

This project refers to the inspection and rehabilitation of the viaduct over the Vouga River, for future enlargement.

The bridge is composed by two distinct structural solutions totaling 990m of length. The bridge has 486m with the major span of 53m, and the access viaduct, with a total length of 487m.

The bridge deck consists in four prestressed box girders with variable height, connected by reinforced prestressed concrete slabs.

The reinforcement consisted in creating extra structures for resistance to seismic action, in the release of the displacements in the North abutment and in the transition pillar that joins the two structures of the viaduct including the replacement of the bearings.

The repair included injection of cracks, concrete repair in localized areas, sealing the holes of concrete formwork and painting.

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Chamusca Metallic Bridge over Tagus River
Location: Chamusca, Portugal
Entity: Estradas de Portugal
Client: 92´Arquitectos
Dates(beginning/end) 2002 - 2010
Description:

This project refers to the inspection and detailed design of the rehabilitation and strengthening of the Chamusca Bridge over the Tagus River.

The bridge connects the two banks of the Tagus River with a total length of 756m divided in eleven spans. The end spans have 57.1 m long and the intermediate spans have 71.3 m.

The bridge deck is composed by superstructure metallic box that is based on two longitudinal truss beams connected at the top and bottom by a bracing system composed by diagonals and perpendicular chords. At the bottom there is a chord structure comprising a metal grid which allows the support of a reinforced concrete slab.

New high damping bearings were placed in piers and abutments, lowering the structure response due to seismic action. It was also necessary to strengthen the piers base and its foundations.

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Portimão Metallic Bridge over Arade River
Location: Portimão, Portugal
Entity: Estradas de Portugal Client: EP - Estradas de Portugal, S.A.
Client: 92´Arquitectos
Dates(beginning/end) 2004-2009
Description:

This project refers to the inspection and rehabilitation of the metallic bridge of Portimão.

The bridge connects the two banks of the River Arade, has a total length of 332m and it´s major span has 47m. The project is composed by the main bridge and a span of the riverside.

The deck structure consists in two metallic box supported by truss beams. The span of the riverside is a metal grille.

The reinforcement for the seismic action consisted of hydraulic dampers placing, the implementation of a retaining structure, consolidation of pillars and abutments and jet-grouting. The road platform was replaced by prefabricated slabs supported in the knot of the truss. The repair included treatment of metal, injection of cracks, replacement of expansion joints and painting.

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Abrantes Metallic Bridge over Tagus River
Location: Abrantes, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2002 - 2009
Description:

This project refers to the inspection, rehabilitation and strengthening of the Abrantes metallic bridge.

This bridge allows the crossing of the Tagus River. The structural solution of the bridge is defined by seven spans, interrupted in the columns by expansion joints, with the following configuration: 5 x 41.91 m + 49.53 m + 41.91 m = 331, 4 m.

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Belver Metallic Bridge
Location: Belver, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2003 - 2010
Description:

This project refers to the inspection, rehabilitation and strengthening of the Belver metallic bridge.

The bridge connects the two banks of the Tagus River with a total length of 180m. The deck bridge is composed by four spans with the following dimensions: 40m + 50m + 50m + 40m.

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Alcácer Metallic Bridge over Sado River
Location: Alcácer, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2003 - 2009
Description:

This project concerns the rehabilitation and strengthening of the bridge that connects the two banks of the River Sado with total length of 107.45m. It is composed by three spans, Extremity spans have 42.7m and the intermediate has 14.6m.

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Segura International Bridge over Erges River
Location: Erges River, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2002 - 2009
Description:

This project is related to the structural rehabilitation and strengthening of the Segura International Bridge over the Erges River.

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Sabor Bridge
Location: Sabor River, Portugal
Entity: Estradas de Portugal
Dates(beginning/end) 2005 - 2009
Description:

This project concerns the rehabilitation and structural reinforcement of the bridge over the Rio Sabor. This structure is made of granite masonry composed by seven half-turn arcs with spans between 8.00m and 20.30m, totaling 128.50 m of length.

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AÇUDE BRIDGE OVER MONDEGO RIVER AND ACCESS VIADUCTS IN COIMBRA
Location: Portugal
Entity: Estradas de Portugal
Client: 92´Arquitectos
Dates(beginning/end) 008-2010
Description:
This project refers to the inspection and detailed design of the rehabilitation and strengthening of the Açude Bridge and access viaducts, integrated in IC2 road, over Mondego River In Coimbra,
The bridge and access viaducts have a total extension of about 2344 m subdivided in 12 substructures. The structural solution consists in pre-stressed slabs with spans of about 25 m, supported by circular cross-section piers of 1.15m of diameter.
Three different types of rehabitiation was developed for the piers, Integral replacement and placing a bearing at the top, piers jacketing, and increasing
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ÁGUEDA BRIDGE OVER VOUGA RIVER
Location: Portugal
Entity: Estradas de Portugal
Client: 92´Arquitectos
Dates(beginning/end) 2002-2010
Description:
This project refers to the repair of a bridge in the old EN 1 that allows the crossing of the Vouga River.
The bridge is composed by stone masonry, consists of 15 arches, with spans between 4.54m and 13.22m, making a total length of 222 m.
The main rehabilitation works were: regularization of the bed of the watercourse; implementation of cofferdams; reconstruction of breakwaters; injection of cement grout in existing cavities in the breakwaters, protecting the foundation of the columns through the concreting of the pad foundations, placing prestressed massive rods columns protection; placing prestressed tie rods in the eardrum to prevent the development of the existing longitudinal cracks in the arches, and repointing the
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