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بلدي ديكسترا

الوسم: Post Tensioning Bar Systems​​

جسر هانوي نهات تان

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جسر هانوي نهات تان (فيتنام – جسر الصداقة الياباني)

The Nhat Tan Bridge is an impressive cable-stayed bridge spanning the Red River, located north of Hanoi. The total length of the project is 8.9 km, including the 3.75 km main bridge.

The bridge serves as a new gateway to Hanoi, significantly reducing travel time to Noi Bai International Airport, the second busiest airport in Vietnam by passenger volume.

The bridge was inaugurated by the Ministry of Transport of Vietnam and opened to the public on January 4, 2015. It has since been renamed the “Vietnam – Japan Friendship Bridge.”

Dextra has been involved in the Nhat Tan Bridge since the early stages of the project, supplying the widely used بارتيك® rebar couplers, the leading rebar splicing solution in Vietnam. Bartec® connections were used in various parts of the project, including approaches, foundation piles, pile caps, and bridge segments.

Bartec® couplers offer a versatile rebar splicing solution, as the same standard coupler can be used for both standard connections (where the rebar rotates into the coupler) and position connections (where only the coupler rotates, useful when rebar rotation is not possible). Dextra supplied more than 130,000 connections in total for this project, enabling the lifting of heavy elements.

For the temporary operations of lifting and securing the precast girder segments, Dextra also supplied 36 tons of high-tensile PT bars.

My Home GRAVA Hyderabad, India

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My Home GRAVA Hyderabad, India

 

في قلب مدينة حيدر أباد بالهند، تتشكل شهادة شاهقة على التميز المعماري والابتكار الهندسي - مشروع My Home GRAVA. يتألف هذا المشروع الضخم من ثمانية أبراج مكونة من 43 طابقًا، ويعد رمزًا للحياة العصرية والتقدم التكنولوجي في صناعة البناء والتشييد. أحد المساهمين الرئيسيين في نجاح هذا المشروع الضخم هو Dextra، الشركة الرائدة عالميًا في تقديم الحلول المبتكرة لقطاع البناء.

تحسين التصميم والبناء:

لم تترك My Home Construction، المطور صاحب الرؤية وراء GRAVA، أي جهد في ضمان تحسين منهجيات التصميم والبناء. منذ المراحل الأولى من التخطيط، كان التركيز على تقديم مشروع لا يعيد تعريف الحياة الفاخرة فحسب، بل يضع أيضًا معايير جديدة للكفاءة والاستدامة في البناء.

قارنات دكسترا: ثورة هيكلية:

At the core of GRAVA’s construction success is the implementation of 570,000 جروتيك couplers and more than 70,000 بارتيك couplers for all structural connections within the concrete frame. These couplers play a pivotal role in ensuring the structural integrity of the buildings, providing a secure and efficient connection between the precast elements.

ال جروتيك و بارتيك couplers are known for their high-performance capabilities, making them ideal for large-scale and complex projects like GRAVA. These couplers eliminate the need for traditional lapped splicing, offering a faster and more reliable alternative for connecting and reinforcing concrete structures and precast concrete elements. This not only accelerates the construction process but also enhances the overall durability and safety of the structure.

As the My Home GRAVA project continues to rise and reshape the skyline of Hyderabad, it stands as a testament to the successful collaboration between visionary developers and innovative construction solution providers. جروتيك و بارتيك couplers have played a crucial role in the seamless construction of the eight 43-storey towers, contributing to the project’s efficiency, strength, and durability.

لا يعد المشروع بتجربة معيشية فاخرة فحسب، بل يضع أيضًا معيارًا جديدًا للتميز في البناء في الهند، حيث تترك مساهمة ديكسترا علامة لا تمحى على نجاحه.

 

CCTV Headquarters, China

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CCTV Headquarters, China

The CCTV Headquarters building is a landmark tower located in the Central Business District of Beijing. The tower houses the operations of China Central Television (CCTV) and has been one of the architectural landmarks of the Chinese capital since its completion in 2012.

For this project, Dextra was involved in providing China State Construction Engineering Corporation with an anchoring solution for the columns that ultimately support the building’s bridge-like complex architecture.

Anchoring the structure was particularly challenging due to the building’s height (234 meters) and its distinctive, complex shape. Additionally, since the building is located in a seismic zone, it needed to be constructed to withstand additional loads.

Dextra supplied high-tensile post-tensioning bar systems in large diameters. The post-tensioned system was designed to lock the metallic structure at the base of the mega columns and anchor them into a heavily reinforced mat.

The large PT systems (bars and plates) were equipped with additional corrosion protection accessories, including tubes and injection ports, allowing for grout sealing.

جسر عبر خليج الكويت

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جسر عبر خليج الكويت (جسر جابر)

 

The Main Causeway across the Kuwait Bay is a 36-km-long project currently being built north of Kuwait City. It will ultimately be connected to Doha Link, another sea link project west of Kuwait City, which will connect the Jaber Causeway sea link, one of the largest civil engineering projects ever built in the Middle East.

The main causeway across Kuwait Bay stretches north of Kuwait City. It is expected that the link will greatly contribute to the development of the northern part of Kuwait. To achieve that, the Causeway will literally cut across Kuwait Bay with a 27-km sea link.

أبراج وعوارض الجسور

For the visible part of the sea link, Dextra worked with contractor Hyundai to offer high-tensile post-tensioning bar solutions.

دكسترا Smooth PT Bar تم استخدام الدرجة 835/1050 على طول الوصلة البحرية لربط العوارض مسبقة الصب معًا.

For part of the sea link, which is topped by a metallic cable-stayed structure. Higher performance bars in Grade 1050/1200 were used to offer a vertical anchoring point between the pylon and the reinforcement of the pile. PT Bars were delivered with a full corrosion protection accessory set by Dextra so that the bars will resist the marine conditions.

أنابيب التسجيل الصوتية ذات الفتحات المتقاطعة

For the concrete integrity testing of the onshore and offshore foundation piles, Dextra supplied around 400,000 linear meters of Sonitec tubes, which are easy to set up and reconnect without the need for welding, which significantly increases the productivity of the pile assemblies.

بمجرد تركيبها، تكون الأنابيب ثابتة في مكانها، مما يدعم دون مشكلة رفع القفص والتعامل معه.