Groupe Dextra | Connexions fiables

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Stainless splicing for Montreal’s new Champlain Bridge

Stainless rebar couplers to splice rebar horizontally on the structure.

Reinforcement for bridgeLe nouveau pont Champlain est un pont de 3 km de long enjambant le fleuve Saint-Laurent à l'entrée sud-est de Montréal, dans la province de Québec (Canada).

The Champlain Bridge is one of the busiest bridges in Canada and plays an important economical role for its city as it is part of the main itinerary to the United States, accessible 60-km South.

For this project, Dextra is supplying its Épissage mécanique des barres d'armature Rolltec system, in both Carbon Steel and Stainless Steel versions. Rolltec is a certified system by the Department of Transportation of the State of Quebec.

Read more on full project page

Teams are back to run Peak24!

Dextra teams at the race starting point!

Way to go Dextra team!This year again, Dextra lined up 2 teams of 12 runners at Peak24 race in Hong Kong! The teams were featuring a mix of Dextra Guangzhou and Dextra Hong Kong staff, pushing together their limits for the good cause and in an incredible atmosphere!

Peak 24 Race is a charity race aiming to raise awareness about slavery and human trafficking problem in the world, and especially in Asia. Funds raised by Peak24 will be donated to the 24 Hour Race, a Hong Kong-founded & international youth charity which inspires students in five countries to join the movement to eradicate modern slavery. The profits raised from us will directly benefit the expansion of the 24 Hour Race movement.

Bar systems for liquid gas tanks

In the United Arab Emirates, Dextra recently delivered a new Oil and Gas project. Dextra tension rods have been used for the support of structure supporting very large liquid gas tanks.

For this application, Dextra engineered, manufactured and delivered bar assemblies based on Carbon Steel bars Gr.355 of diameter Ø120mm. Each barre de tension system is composed of two segments spliced at the lower half of the assembly. The system is mounted onto gusset plates thanks to their fork ends, which can be connected to the structure in just a few minutes by simply sliding in a pin in the middle of the fork.

For length adjustment and tightening, turnbuckes, positionned at the lower half of each tendon, are simply rotated to bring bar segments closer to each other and tension the overall system.

Deliveries for Riyadh Metro stations

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Le métro de Riyad est un vaste projet de système de transport urbain en construction à Riyad, en Arabie Saoudite. Le projet comprendra 85 gares, construites le long de 6 lignes de transport en commun, pour une longueur ferroviaire totale de 176 km. Il est prévu que le système desservira au moins 1 million de passagers par jour lors de son inauguration en 2018.

For this large infrastructure project, Dextra Middle East has been involved on various stations and packages.

Travaux d'excavation

Before proceeding with general construction works, during early excavation phase, it is required to anchor retaining walls back into the stable ground in order to prevent any wall displacement. This will allow to keep excavating in a safe environment.

For that purpose, Dextra supplied steel ground anchors installed through retaining wall. Each system is based on a high-tensile fully threaded bar, coming with nut and plate, and grouted to provide bonding with the soil.

Connexions de radeau et verticales

Coupleurs de barres d'armature Bartec were supplied for the works in the stations. Couplers were used for slabs, column and wall connections. A typicall application on this project is to cast rebar couplers in the concrete with reinforcement, and then proceed with second phase bar connection at a later stage.

Unitec bolted couplers can have also been use on various parts of the project. Typically Unitec is used when overlap is planned but lapping length appear to be too short to perform a safe splice. In that case Unitec provides a convenient and full performance connection.

BITEC tension bars installation now complete!

Dextra supplied contractor Italian-Thai with Barres de tension to support the roof structure of the expansion of BITEC, a leading exhibition and convention center in central Bangkok. Installation has successfully be completed in 2016!

tension bars bitec

In total, Dextra delivered 298 assemblies in various diameters, each composed of multiple bars connected with couplers and turnbuckles and anchored to the structure with fork ends, with total assembly lengths in several cases exceeding 50 meters long (average 33 meters).

 

 

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Pour des structures aussi grandes, Barres de tension offer a number of advantages compared to other “tensioning” solutions: lower elongation under loads, lower post tensioning forces required, better resistance to corrosion, reduced long terms relaxation and reduced maintenance and surveillance costs.

 

Start the year on strong bases

2017 is upon us and all the Dextra team wishes you a wonderful and prosperous year ahead, and a lot of succesful projects too!

What better way to start the year than making sure those projects will be will built on the strongest bases possible? For that we got you covered!

Dextra recently updated its Ground Engineering range documentation, featuring all our ground anchor solutions. Our unique range covers both steel and FRP (Fiber Reinforced Polymer) solutions. This unique mix will cover all your possible anchoring challenges, in all soil conditions, from permanent to temporary applications.

 

Télécharger la brochure

Dextra solutions for foundation pile cages

For precabricated cages used in foundation piling, Dextra recommends the use of 2 distinct solutions that will speed up and ease installation on site: optimal performance, higher productivity, safer operations.

Reinforcement >> Dextra coupler solutions are designed to allow the reconnection of prefabricated cages safely and in a minimum time.

CSL (Crosshole Sonic Logging) >> For Cross-Sonic Logging tubes (used in foundations testing), Sonitec will allow fast reconnection of the tubes without welding.

Charity – 67 runners from Dextra’s Bangkok in Rama IX Park

Dextra teams have united again for a good cause! The pink runners from Dextra’s Bangkok Factory and Headquarter office have joined a charity run in favor of the Thai Liver Association on Sunday 9th of October. The event took place at Suan Luang Rama IX park, a large green space located a few kilometers away from Dextra’s main factory. 

Congratulations to the Dextra team for completing this challenge and successfully raising awareness and donations for the Thai Liver Foundation.

 

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Coupleurs Dextra sur les récents projets de métro en France

À Paris, l'extension de la ligne 14 s'inscrit dans le cadre du plan de transports urbains du Grand Paris Express. L'extension de la ligne de métro rapide traversera bientôt Paris pour aller jusqu'au nord jusqu'à Saint Ouen. Dextra a fourni plus de 70 000 coupleurs Fortec utilisés dans les gares d'Orsay et de Pont Cardinet. 

À Rennes, dans l'ouest de la France, Dextra livre avec succès les coupleurs à barres d'armature Fortec et Rolltec dans les quatre colis constituant les 15 stations et 12,6 kilomètres (en partie surélevés, en partie souterrains) de la nouvelle ligne B du réseau de métro de Rennes. Les coupleurs sont utilisés à divers endroits tels que les puits de récupération, les stations et les tranchées entre les stations.

20th Anniversary of Dextra’s presence in Guangzhou

This October, Dextra China celebrated the 20th anniversary of Dextra presence in Guangzhou, where is located our main Chinese production facility. Employees have celebrated the company’s anniversary during a 3-days outing in Huizhou in the province of Guangdong. This year celebrations were completed by a special family day with all families invited to join the event. 

In accordance with Dextra Guangzhou’s mission and values, people-minded and caring organization, this special anniversary was also an opportunity for the teams to raise funds in favor a children charity action which will provide tuitions to 50 children until 2019.

All Dextra teams which many more years of success to our Chinese colleagues in Guangzhou!

 

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