श्रेणी: समाचार

नया चम्पलेन ब्रिज क्यूबेक (कनाडा) प्रांत में मॉन्ट्रियल के दक्षिण-पूर्व प्रवेश द्वार पर सेंट लॉरेंस नदी पर फैला 3 किमी लंबा पुल है।

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 रोलटेक मैकेनिकल रीबार स्प्लिसिंग system, in both Carbon Steel and Stainless Steel versions. रोलटेक is a certified system by the Department of Transportation of the State of Quebec.

Read more on full project page

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.

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 तनाव पट्टी 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.

रियाद मेट्रो रियाद, सऊदी अरब में निर्माणाधीन एक विशाल शहरी पारगमन प्रणाली परियोजना है। इस परियोजना में 176 किमी की कुल रेल लंबाई के लिए 6 पारगमन लाइनों के साथ निर्मित 85 स्टेशन होंगे। उम्मीद है कि 2018 में अपने उद्घाटन के समय यह प्रणाली प्रतिदिन कम से कम 1 मिलियन यात्रियों को सेवा प्रदान करेगी।

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

उत्खनन कार्य

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.

बेड़ा और ऊर्ध्वाधर कनेक्शन

बार्टेक रीबार कप्लर्स 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 यूनिटेक 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.

Dextra supplied contractor Italian-Thai with तनाव पट्टियाँ 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!

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).

इतनी बड़ी संरचनाओं के लिए, तनाव पट्टियाँ 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.

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.