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私のデクストラ

カテゴリー: プロジェクト

サンフランシスコのニューベイブリッジ

投稿日: アーティスト: Sir Gwi

サンフランシスコのニューベイブリッジ

The New Bay Bridge was a large civil engineering project undertaken between 2002 and 2013. The aim of the project was to replace two segments of the Bay Bridge that were vulnerable to earthquakes with a new structure designed to withstand seismic forces.

For this project, Dextra was involved in two segments of the renovation: the approach to the Bay Bridge on the San Francisco side and the eastern segment from Yerba Buena Island to Oakland.

Dextra supplied its バーテック® Headed Bar systems for this project. Headed Bars feature an anchor disc mounted on the end of a rebar previously prepared for the Bartec® system.

の用法 頭付きバー provides a smart and compact alternative to long rebar hooks in areas where reinforcement is particularly congested. Unlike hook bars, Headed Bars are easy to install, as end anchors can simply be screwed onto the reinforcement at a later stage, after the reinforcement is in place.

For the approach to the Bay Bridge in San Francisco and the eastern segment of Yerba Buena Island, Bartec® Headed Bars were used for shear reinforcement in the column foundations as well as in the bridge hinges.

The Bartec® Headed Bars solution is approved by Caltrans (the California Department of Transportation) for all imperial bar sizes #3 to #18 and is also certified by the ICC-ES.

フラマンビル EPR

投稿日: アーティスト: Sir Gwi

フラマンビル EPR

フラマンビルは、100% 中国設計の後、新世代 EPR 設計 (欧州加圧型原子炉) に従って建設された最初の原子炉です。 2019年の就航時には1.3GWeの容量を持つ予定。

デクストラは、2008 年の建設工事開始から 2015 年まで現場に常駐していました。

For this challenging project, Dextra has been supplying its Griptec rebar splicing solution through its local fabricator partners. The rebar preparation was supported by an additional machine placed on site.

Griptec is the preferred rebar splicing solution of the nuclear industry thanks to its unique performance level and an automatic testing process which systematically tests all the connections produced as part of its standard cycle: a guarantee that 100% of the connections perform above project requirement.

More than 800,000 Griptec connections have been used on the project, including 400,000 position assemblies, allowing the connection of large diameter rebar without rotating them. The Griptec connections have been installed on the reactor building and APC shell, as well as auxiliary buildings.

In particular, Griptec has been used for the connections of large prefabricated panels.

Four sided panels with Griptec <span class=female sleeves そして bridging studs” width=”303″ height=”198″ />

Four-sided panels with Griptec female sleeves そして bridging studs

Thanks to its Bridging Assemblies, square panels could be reconnected on four-sided panels while coping for possible misalignment that occurs when lifting the cage.

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.

Ciel Tower Dubai, UAE

投稿日: アーティスト: Sir Gwi

Ciel Tower Dubai, UAE

Ciel Tower is an 82-storey high-rise building under development in Dubai Marina. With a total height of 365 meters, it is set to become the world’s tallest hotel-only building upon its completion, scheduled for 2025.

Located in the heart of Dubai Marina, the tower is near popular attractions such as Marina Walk and Marina Mall, a major shopping and entertainment complex. It will feature 1,042 luxury suites, along with a rooftop hosting a pool bar, a restaurant, and an observation deck.

The architectural design is heavily inspired by the concept of vertical living, maximizing panoramic views of Palm Jumeirah, Bluewaters Island, Dubai Harbour, and the Arabian Gulf.

Dextra has supplied 180,000 バーテック couplers for critical structural connections, including rafts, columns to beams, slabs to core walls, core walls, and starter bars, enhancing the building’s strength and stability.

Ciel Tower is set to become an iconic landmark, further solidifying Dubai’s reputation as one of the world’s premier tourist destinations.

画像の出典: https://www.archdaily.com/931860/ciel-the-worlds-tallest-hotel-is-under-construction-in-dubai-marina、https://propsearch.ae/dubai/ciel-タワー

Orbit by Auro Realty, Hyderabad, India

投稿日: アーティスト: Sir Gwi

Orbit by Auro Realty, Hyderabad, India

プレキャスト技術で建設されたインドで最も高い商業ビル

Orbit is a 25-storey office building strategically located in the heart of Hyderabad’s IT Hub, constructed using precast technology. It is one of the tallest commercial buildings in India built with this method.

Constructed by Aurobindo Realty, the Orbit building was honored with the “Best Office Architecture India” award by the International Property Awards – Asia Pacific Property Awards 2018.

Designed with precast technology, the building is also proposed for LEED v4 Gold Certification from USGBC, demonstrating its commitment to environmental sustainability and energy efficiency.

Dextra’s グルーテック couplers played a key role in precast element connections. Approximately 60,000 couplers were installed in precast elements at the precast factory before being transported to the construction site for grout connections.

With the growing demand for modular buildings worldwide—especially during the COVID-19 pandemic, where healthcare and quarantine facilities were urgently needed—グルーテック couplers have become a widely adopted solution. They are designed and manufactured in compliance with Eurocode 2, BS 8110, ACI 318, IBC, and AASHTO standards.

画像の出典: https://www.aurobindorealty.com/portfolio/orbit/

カルタヘナ マングラー橋梁

投稿日: アーティスト: Sir Gwi

カルタヘナ マングラー橋梁

The Viaducto del Manglar project is a 5.3 km bridge spanning the Ciénaga de la Virgen (swamp), north of Cartagena, Colombia. The project aims to reduce traffic congestion when exiting the city in the Zona Norte (Northern Area).

The viaduct, scheduled to open in 2018, is part of a longer highway project linking Cartagena with Barranquilla.

コロンビアのこのプロジェクトでは、デクストラは請負業者のリッツァーニ・デ・エッチャーに次のようなものを供給してきました。 ロールテック® 鉄筋カプラーと 頭付きバー. Rebar preparation operations have been carried out by Dextra’s distributor in Colombia.

Headed Bars were used in precast caissons, installed beneath the bridge girders, to reduce steel congestion in the heavily reinforced steel cages.

コロンビアにおける Dextra ソリューションの詳細については、弊社までお問い合わせください。 ラテンアメリカ地域オフィス.

Copyright pictures: Consesion Costera

Two IFC (International Finance Centre), Hong Kong

投稿日: アーティスト: Sir Gwi

Two IFC (International Finance Centre), Hong Kong

Two IFC is a landmark skyscraper in Hong Kong, located in West Kowloon. The 412-meter-high commercial building features 88 floors and is the second tallest building in Hong Kong, following the ICC Tower.

Vertical reinforcement is a crucial structural feature for buildings of this height. Consultant ARUP and contractors E-Man-Sanfield JV selected Dextra for the splicing of reinforcement throughout the building.

For this project, Dextra supplied more than 200,000 バーテック rebar couplers, which were primarily used for vertical connections, especially in all columns.

Additionally, rebar couplers provided connection points for second-phase rebar reconnection, typically between columns and slabs and columns and beams. To achieve this, rebar couplers were aligned horizontally and cast in concrete, allowing for reconnection at a later stage by screwing in the second-phase rebar.

バーテック is the preferred reinforcement splicing solution for contractors in Hong Kong, as it is recommended in the Hong Kong Building Material List. Dextra also operates its own rebar threading workshop in Hong Kong, providing rebar preparation services for its customers.

マンドヴィ川斜張橋

投稿日: アーティスト: Sir Gwi

マンドヴィ川斜張橋

The third bridge over the Mandovi River in Goa is an iconic structure that connects Panaji in Tiswadi Taluka and Porvorim in Bardez Taluka. Positioned between the two existing bridges, it was designed to ease traffic congestion along this route. The bridge was officially inaugurated on January 27, 2019.

As one of the longest cable-stayed bridges in India, the four-lane, 21m-wide, 620m-long continuous span Mandovi River Cable-Stayed Bridge adds architectural beauty to Panaji. Standing 70m above sea level, its central concrete pylons are spaced at 150m and are supported by 88 cables arranged in a single-plane harp-type configuration.

Dextra supplied 1,170 sets of fully-threaded post-tensioning bar systems in diameters of 25, 32, 40, 50, and 75mm, with a grade of 830/1030, for various applications, including:

  • ハンガーバー
  • 垂直方向のプレストレス
  • 水平プレストレスバー
  • リフティングバー
  • Anchoring the pier head segment to the pier cap
  • Anchoring the front support to the pier cap
  • Anchoring the front cantilever support to the pier cap
  • Anchoring the middle, rear, and auxiliary supports

King Abdullah Financial District, Saudi Arabia

投稿日: アーティスト: Sir Gwi

King Abdullah Financial District, Saudi Arabia

The King Abdullah Financial District (KAFD) is a multipurpose business and residential complex located in Riyadh, Saudi Arabia. The district consists of more than 50 towers and is expected to accommodate a working population of around 12,000 people.

Dextra Middle East, based in Dubai, has been involved since 2009 in supplying several building packages to Saudi Bin Ladin Group, the main contractor for the project.

Foundation Piles

To provide vertical connections in foundation piles, Dextra supplied its popular バーテック rebar coupler solution—the #1 rebar splicing solution in the Middle East—through its fabrication partners.

In addition to バーテック couplers, Dextra also supplied ユニテック couplers, which were used for the continuation of bars protruding from the foundation piles. ユニテック offers a flexible solution for contractors, as it does not require prior bar-end preparation. It only requires an impact wrench, making it easy to operate, especially on remote construction sites.

いかだと柱

バーテック couplers were also used for horizontal connections in the thick foundation rafts and vertical connections in the protruding columns.

Core Wall-to-Beam アプリケーション

In the building superstructure, Dextra バーテック couplers were used to provide horizontal connections from the core wall, enabling the insertion of second-phase starter bars needed to create the beam reinforcement.

ニューシャンプレーン橋

投稿日: アーティスト: Sir Gwi

ニューシャンプレーン橋

The New Champlain Bridge is a 3 km-long bridge spanning the Saint Lawrence River at the southeastern entrance of Montreal, Quebec, Canada. As one of the busiest bridges in Canada, it plays a crucial economic role for the city, serving as a key route to the United States, located 60 km south.

 

Replacing the Older Champlain Bridge

The New Champlain Bridge is replacing the existing Champlain Bridge, which was commissioned in June 1962. The older structure began showing signs of corrosion in 1994. After several temporary safety measures were implemented to keep the bridge operational, a replacement project was initiated in 2007. For a time, both bridges will stand side by side until the older structure is fully dismantled, with most of its materials planned for recycling.

 

A Focus on Corrosion Resistance

The New Champlain Bridge is designed to last at least 125 years and accommodate 50 million vehicle crossings per year. Given the corrosive environment caused by frequent road de-icing, corrosion resistance was a top priority. Duplex stainless steel rebar was installed in critical areas to enhance durability.

For this project, Dextra recommended using Duplex Stainless Steel Rolltec couplers and anchors. This specialized version of our ロールテック® system replaces standard couplers and anchors with an improved duplex steel alternative, offering superior corrosion resistance.

The Rolltec® solution is well-suited to the Canadian market and is approved by the Quebec Ministry of Transport. With a single-operator threading machine and 30-second threading cycles, it provides high productivity, making it ideal for high-labor-cost markets like Canada.

More than 10,000 Stainless Rolltec® couplers were supplied for this project, primarily for bridge spans. These couplers were used to splice large-diameter reinforcement bars, ranging from 35M (#11) to 55M (#18)—the largest size available in our Rolltec® range.

Additionally, about 10,000 Rolltec® stainless steel end anchors were delivered for sizes up to 55M (#18). Rolltec® Headed Bars use the same threading system as the couplers, simplifying production and installation.