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私のデクストラ

タグ: Post Tensioning Bar Systems​​

ハノイ ニャットタン橋

投稿日: アーティスト: Sir Gwi

ハノイ・ニャッタン橋（ベトナム・日本友好橋）

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 バーテック® 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

投稿日: アーティスト: Sir Gwi

My Home GRAVA Hyderabad, India

 

インドのハイデラバードの中心部で、建築の卓越性とエンジニアリングの革新を示すそびえ立つ証拠、My Home GRAVA プロジェクトが形になりつつあります。 8 つの 43 階建てタワーからなるこの巨大プロジェクトは、現代の生活と建設業界の技術進歩の象徴として立っています。この巨大なベンチャーの成功に大きく貢献した人物の 1 人が、建設業界に革新的なソリューションを提供する世界的リーダーである Dextra です。

設計と建設の最適化:

GRAVA の背後にある先見の明のある開発者である My Home Construction は、設計と建設方法論の最適化を確実にするためにあらゆる手段を講じています。計画の初期段階から、贅沢な暮らしを再定義するだけでなく、建設の効率性と持続可能性の新たな基準を設定するプロジェクトを実現することに重点が置かれてきました。

Dextra カプラー: 構造革命:

At the core of GRAVA’s construction success is the implementation of 570,000 グルーテック couplers and more than 70,000 バーテック 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.

の グルーテック そして バーテック 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. グルーテック そして バーテック 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.

このプロジェクトは贅沢な生活体験を約束するだけでなく、デクストラの貢献によりその成功に消えることのない足跡を残し、インドにおける優れた建設の新たな基準を確立しました。

 

CCTV Headquarters, China

投稿日: アーティスト: Sir Gwi

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.

クウェート湾を渡る土手道

投稿日: アーティスト: Sir Gwi

クウェート湾を渡る土手道 (ジャバー土手道)

 

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.

橋の鉄塔と橋桁

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

デクストラ Smooth PT Bar グレード 835/1050 は、プレキャスト桁を接続するためにシーリンク全体に使用されました。

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.

クロスホールソニックロギングチューブ

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.

設置すると、チューブは所定の位置にしっかりと固定され、ケージの持ち上げや取り扱いを問題なくサポートします。