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ΤΕΛΙΚΗ ΚΑΛΥΨΗ ΧΑΔΑ

CONSTRUCTION DE LA ROUTE DE LA CORNICHE DE BRAZZAVILLE

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Reinforced embankments with vertical concrete facing

2020

BRAZZAVILLE - BRAZZAVILLE - Congo

Etat Congolais

CONSTRUCTION DE LA ROUTE DE LA CORNICHE DE BRAZZAVILLE

Problem

The extension project of the Corniche road in Brazzaville is part of a larger construction contract involving urban developments in the Bacongo and Makélékélé neighborhoods. The extension of the Corniche road to a 2×2 lane configuration covers approximately 5 kilometers between the Djoué Bridge and the Case de Gaulle. The route, on a slope, runs along the Congo River and requires the construction of several support structures. The technical solution specified in the contract was a patterned concrete L-wall with reinforcement of the embankment using geotextile boudins. Maccaferri proposed an alternative solution with a reinforced embankment featuring patterned concrete facing Macres®, which was favored by the company as it met the technical and aesthetic requirements of the project while significantly saving installation time and providing overall cost savings.

Solution

The Paraweb® MD45 geoband reinforcements were used and perfectly adapted to the intermediate material embankments (Type 3 according to NF EN 14475). Depending on the heights and sections, the bands had varying lengths between 4 and 11 meters. At the head of the wall, the presence of a 1.30-meter-deep channel 2 meters from the facing did not allow for the deployment of the upper bands. Therefore, the head scales were connected to a concrete beam poured parallel to the facing using waiting iron bars placed during prefabrication. Fifteen walls, with a total surface area of approximately 6,000 square meters and a maximum height of 8.50 meters, were constructed in six different sectors. The Macres® solution offers several advantages:-Uniformity and flexibility of the structure: The embankment and facing form a homogeneous structure, absorb settlements without damage, and perform well under seismic loads.-Reliability of Paraweb® polymer reinforcements, which are corrosion-resistant and have a lifespan of 120 years.-Speed and ease of execution.-Cost-effective solution due to reduced steel and concrete consumption and a decrease in the number of transportation trips to supply the construction site.

Used Products

MACRES
MACRES
Το σύστημα MacRes της Maccaferri χαρακτηρίζεται από κατακόρυφα προκατασκευασμένα πάνελ με πρόσοψη από σκυρόδεμα και στρώσεις οπλισμού ParaWeb, επίπεδεΔείτε
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