Phuoc Khanh bridge is a 4.7-kilometer cable-stayed bridge linking Ho Chi Minh City with Dong Nai. The bridge is part of the southern Vietnam’s longest highway, Ben Luc – Long Thanh Expressway, running through Long An province, Ho Chi Minh City and Dong Nai province.
When completed, the highway will connect the south-western region with the south-eastern region of the country, facilitating the transportation between the two parts of the country with improved traffic flow and larger lanes. The project aims to develop the socio-economic activities of this area.

橋の恒久的な用途向けの Dextra ポストテンションバー

For the construction of the Phuoc Khanh Bridge, Dextra is supplying its post-tensioning bar systems as permanent post-tensioning anchors.
Over 250 high performance fully-threaded post-tensioning bars and over 200 smooth bar systems were delivered to site. Also known as PT bars, they are specifically designed for post-tensioned applications. They can be corrosion-protected as is the case for the equipment supplied in the project. The corrosion protection is done in a controlled facility in Dextra’s factory, before being shipped to site.

当社の製品についてさらに詳しく知りたい場合は、Dextra のサイトをご覧ください。 橋と高架橋のソリューション.

The Tuen Mun–Chek Lap Kok Link (TM–CLKL) is a road project between the Northwest New Territories and Hong Kong – Zhuhai – Macao Bridge, the Airport and North Lantau.

The total length of the road is around 9 km, consisting of two elements which are the Northern Connection and the Southern Connection.
The Northern Connection will join Tuen Mun Area 40 to Hong Kong Port through an undersea tunnel, while the Southern Connection will link the Hong Kong Port and North Lantau Island on viaducts.

Dextra supplied 100,000 Bartec rebar couplers for the structure of diaphragm walls and tunnels.

Full-performance Bartec couplers are an optimal replacement for rebar overlapping, reducing both cost of material and rebar congestion at the lap zone.

Moreover, to avoid rebar congestion in the ventilation building structure, more than 50,000 Headed Bars were applied at the top of the columns. Headed Bars act as a substitute for hook and long development length with more simple and effective anchorage.

The Southern Connection was opened in October 2018. The project is expected to be fully commissioned by 2020.

Pumarejo Bridge is a 3,200m-long bridge including an 800m-long cable-stayed section and 1,300m of viaducts as well as access roads.

The new cable-stayed bridge is located over the Rio Magdalena river in Barranquilla and the Salamanca Island Road Park in Sitionuevo, Colombia.

It replaces the old Puente Pumarejo: with its two lanes, the old bridge was no longer doing justice to the increased traffic, and it quickly became an obstacle for shipping on the Rio Magdalena due to a clearance below of only 16 meters.

The new bridge comprises of 6 lanes of traffic (3 lanes each way), 2 side bike paths and a pedestrian path along its side.

Dextra provided rebar connection solutions that were designed to reinforce the concrete structures.

More than 120,000 Rolltec couplers were provided for pier and deck reinforcements.

In addition, over a thousand of Unitec bolted couplers were applied for the connection rebars without the need of threading.

Since its completion, it became the longest road bridge in the country and one of the largest in Latin America.

Source of images: https://www.khl.com/international-construction/colombias-longest-road-bridge/139582.article, https://commons.wikimedia.org/wiki/File:Puente_ pumarejo.jpg

Thane-Kalwa Creek Bridge is a nearly 2.4-km long U-shaped road bridge over the Thane creek at Kalwa Naka, India, aiming to ease the traffic congestion between Thane and Navi Mumbai along with congestion in Kalwa and Thane city areas.

Dextra delivered more than 20 sets of Tension Rod system in various lengths (maximum length supplied is ~24m), size M108, grade 700, used as suspenders for basket handle bridge/steel arch bridge.

Tension Rods typically act as bracing or suspension elements and provide the benefits of high strength, length adjustability, ease of installation as well as the ability to be post-tensioned after installation. A wide range of sizes and accessories in various steel grades and in both carbon and stainless steel is available.

The bridge was originally scheduled to be opened in 2020, but the pandemic and the subsequent lockdowns significantly delayed the construction.

The Braila-Tulcea Bridge is an under-construction road suspension bridge over the Danube river, between Braila, a major city in the east of Romania, and the opposite bank of the river in Tulcea County.

It will be the first bridge over the maritime sector of the Danube river, which will improve road traffic accessibility of the Galați-Braila area to Constanța and Tulcea, and connect Moldavia and Dobruja regions.

The suspension bridge will have a main span of 1,974m, two side spans of respectively 490m on the Braila bank of the river and 365m on the Tulcea bank of the river, along with two access viaducts of 110m length on both sides, and a connecting road with a total length of approximately 23km.

Dextra supplied 280,000 Bartec rebar couplers for the reinforcement of the suspension bridge structure.

Bartec coupler is compliant with seismic design under ISO 15835 category S2. It can withstand tension and compression of large deformation in case of violent earthquakes.

The construction of the bridge is anticipated to be completed in 2023.

Being the new fast-tracks linking the Center to the East of Thailand, the construction of Bang Pa-In – Nakhon Ratchasima Motorway is therefore considered one of the country’s major infrastructure projects.

The main purpose of this project is to stimulate the country’s economy. When completed, it will connect Thailand’s major urban centers within the Greater Mekong Sub-region.
The Intercity Motorway includes two sections: the six-lane 103-kilometer section from Bang Pa-In to Pak Chong, and the 93-kilometer four-lane from Pak Chong to Nakhon Ratchasima. Having been started in 2016, the project is planned to last until 2020.

The project’s required completion period of 4 years being challenging, the construction of the motorway has been divided into approximately 40 contracts to accelerate the project’s schedule.
To minimize potential impacts to local residents, a number of underpasses, overpasses and elevated structures (e.g. large viaducts) are provided throughout the Bang Pa-In – Nakhon Ratchasima Motorway.

Optimize the infrastructure project with Dextra’s rebar couplers

For the construction of the motorway’s elevated structure, the contractors of different packages opted for Dextra’s full performance Bartec rebar couplers to save time and money on the mechanical connection of the diameter 20mm to 32mm reinforcement bars.
Thanks to Bartec’s unique splicing system, all applications (Standard/ Position) can be fulfilled by one and only model of rebar coupler, reducing inventory management of the project to a minimum.
Further to this, Dextra’s Sonitec sonic tubes were also installed for cross-hole sonic logging tests in the foundations of the Bang Pa-In – Nakhon Ratchasima Intercity Motorway structures.

Dextra’s post-tensioning bars for the Motorway’s elevated structures

In addition to Dextra’s splicing and cross hole logging solutions, both smooth and fully-threaded Post-Tensioning bars were also used for both temporary (lifting and launching girder assembly) and permanent applications in segments. Approximately 28,000 sets of both PT bars have been delivered as per June 2018.
For more information about Dextra’s solutions in Thailand, please contact our Bangkok office.

ビンカイン橋の建設は、ホーチミン市とロンアン省南部を貫く全長58キロメートルの道路建設を伴うベトナムのベンルク－ロンタイン高速道路プロジェクトの一環である。
2016年に開始され、2020年内に供用開始予定のこのプロジェクトの主な目的は、国内の高速車両輸送施設を開発することである。
この全長 58 km の高速道路の建設を容易にするために、プロジェクト所有者のベトナム高速道路公社は、プロジェクトを西部、中部、東部の 3 段階に分割しました。

滑らかな全ねじ PT バー: 橋と高架橋のポストテンション ソリューション

中間セクションの一部である長さ 3 キロメートルのビン カイン橋の建設用に、Dextra は滑らかで全ねじのポストテンション バーを納入しました。これらは主要構造物、支持ケーブル、橋の西側と東側のアプローチで使用されてきました。

ベトナムにおける当社のソリューションの詳細については、当社までお問い合わせください。 バンコク事務所.

The six-lane extradosed bridge over the Ganga River in Prayagaraj will span for 9.9 kilometers, with the main bridge covering 3.84 kilometers and the approach segment covering the remaining distance.

The 3.84-kilometer stretch would include 67 pillars and 17 pillar foundations. Also, of this 3.84 km, the span of 860 meters will be extradosed bridge, and the rest will be a precast segmental bridge with a span of 50 meters.

Dextra supplied 20,000 Sonitec tubes, an easy-to-assemble and time-saving tube solution used for the CSL (crosshole sonic logging) testing of foundation piles to determine the structural integrity. The tubes were installed in piles that were 30 to 36 meters deep and had a diameter of 1.2 meters.

The bridge will start from the Pratapgrah road, gain height to over cross the existing Y-junction (going towards Lucknow) and would then cross the Ganga from Kacchar area spanning over Beli village before ending at Stanley Road. It is expected to be in operational in 2024.

新しいストルストロム橋は、デンマークが交通インフラを改善し、国内の島々をより効率的に結ぶことに尽力していることの証です。ストルストロム海峡に架かるこの橋は、1937 年以来シェラン島とファルスター島を結ぶ重要な橋として機能してきた老朽化したストルストロム橋に代わるものです。

新しいストーストロム橋は、車両交通だけでなく、歩行者や自転車にも対応できるように設計されています。その革新的なアーキテクチャとエンジニアリングは、移動時間を短縮し、安全性を向上させ、デンマークの 2 つの主要な島の間の信頼できるリンクを提供するように設定されています。

Dextra はエンジニアリング建設ソリューションの専門知識を持ち、杭補強ケージを接続するための Rolltec カプラーとヘッド付きバーを 120,000 個供給してきました。これらのコンポーネントは橋の基礎の建設に不可欠であり、橋がその耐用期間中に受ける膨大な重量と力を支えるために杭がしっかりと相互接続されていることを保証します。

橋の基礎への貢献に加えて、当社は設置された鉄筋をねじなしで接続する補修用途向けのユニテック カプラーも提供してきました。デクストラの貢献により、この橋は今後何世代にもわたって、ジーラントとフォルスター島の間のライフラインとして機能し、人々、コミュニティ、機会を結びつけることになるでしょう。

ナナイ橋は、ペルーのイキトス市の北にあるナナイ川にかかる 2.2 km の橋です。

この橋はナナイ川右岸のベラビスタ地区と左岸のサント・トーマス地区を結ぶことになる。

人口約50万人のイキトスは、ペルー・アマゾンのジャングルに囲まれ、道路ではアクセスできない世界最大の都市で、現在は川と空路でのみアクセス可能です。

このプロジェクトのおかげで、この都市はついにロレート地方の他の地域とつながることになります。

主構造物は主径間242m、全長424mの斜張橋です。アプローチ構造物は川の右岸で長さ 1.2 km、川の左岸で長さ 320 m です。

橋には 2 車線と 2 つの歩行者専用通路があります。車道の総幅員は12m、歩道幅員は1.2mです。

軽量複合鋼コンクリートを使用することで、コンクリートの使用量を最小限に抑え、基礎に伝わる荷重を軽減します。

このプロジェクトのために、Dextra は鉄筋接続用に 100,000 本の Bartec カプラーと、アンカーのせん断補強用に 30,000 本の頭付きバーを供給しました。

完成すれば国内最長の橋となる。