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分类： 道路与桥梁

瓦朗谢讷弓弦

发表于 通过 Sir Gwi

瓦朗谢讷弓弦

The Valenciennes Bowstring is a 2-kilometer-long bridge construction project that will connect the Saint-Saulve roundabout with the Bruay-sur-l’Escaut roundabout (North). It features a 76-meter-long bowstring bridge, a double-girder engineering structure, a pedestrian footbridge, and a wildlife passage.

Dextra, in collaboration with its local partner, Freyssinet, supplied a tension rod system as a hanger for the bowstring arch bridge on the bypass, ensuring the structure’s stability.

The tension rod system is renowned not only for its high performance but also for its customizable parameters, including design load, surface finish, and corrosion resistance, to meet all technical and aesthetic project requirements.

 

佩列沙茨桥

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佩列沙茨桥

The Pelješac Bridge construction aimed to connect the mainland to the Pelješac Peninsula, eliminating the need for ferry services and significantly reducing travel time between these regions. Dextra’s Fortec couplers played a pivotal role in connecting the pile reinforcement cages, ensuring the bridge’s structural stability.

A total of 85,000 Fortec couplers, in sizes ranging from 16-50 mm, and in Types A, B, and C, were used in the construction of the Pelješac Bridge. These couplers securely connected the pile reinforcement cages, ensuring the long-term stability and safety of this critical infrastructure.

宿雾-科尔多瓦连接高速公路（CCLEX），菲律宾的巨型桥梁

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Cebu-Cordova Link Expressway (CCLEX), a colossal bridge in the Philippines

Cebu–Cordova Link Expressway is one of the biggest infrastructure projects being undertaken in the Philippines. The project features a combination of a causeway, a gigantic cable-stayed bridge that will cross the navigable zone of the Cebu Strait, two 高架桥, and four low-height bridges, as well as roadways and pedestrian walkways. The CCLEX Project aims to provide better transport facilities while reducing traffic congestion in the region, as well as to improve connectivity within Cebu City. It is also intended to support Cordova’s economic growth, as the expressway will position the city as the gateway for island tourism. Also known as the Third Mandaue–Mactan Bridge, the official groundbreaking of the toll bridge was in 2017, with the completion being scheduled for 2022.

连接宿雾岛和麦丹岛的斜拉桥

After its completion, the Cebu-Cordova Expressway will link the Cebu mainland and Mactan Island through Cordova town. The 8.5 km-long toll bridge will feature two lanes that will serve up to 40,000 vehicles a day. The main bridge will be built with a 400-meter cable-stayed main span, with 60-meter navigation clearance, allowing ships to easily navigate through the expressway. The main bridge of the expressway will connect the Guadalupe River to Shell Island in Cordova, while its colossal 高架桥 will link it to the causeway and road networks to Mactan.

Dextra Bartec, reinforcing solutions for the construction of the Cebu-Cordova Bridge

The design and the construction of this megaproject are undertaken by the Cebu Link Joint Venture (CLJV). The CLJV is a joint-venture partnership between the Spain-based Acciona Construccion S.A. and the Philippines-based First Balfour Inc. and D.M. Consunji Inc. For the 钢筋/增强筋 of the colossal expressway’s foundations, the contractor has chosen Dextra’s well-known rebar 连接方案 巴特克. More than 35,000 units of Standard, Bridging, and Transition splices of steel grade 75, both in diameters 40 and 50, have been applied to the foundations’ 桩 cages as of July 2018. Moreover, to provide better end anchorages in congested areas, the CLJV opted for Dextra Bartec 有头条, which are also known as end anchors. Bartec end anchors are a convenient alternative to 弯钩, traditionally used for anchoring. For more information about rebar coupler availability in the Philippines, please contact our 曼谷办事处.

西门隧道

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西门隧道

西门隧道项目将为西门大桥提供一个重要的替代方案，提供急需的第二条河流交叉口、更快、更安全的旅程，并从住宅街道上拆除数千辆卡车。

该项目将通过亚拉维尔地下的双隧道和高架 Footscray 路，将亚拉维尔的西门高速公路与墨尔本港和港区的 CityLink 连接起来。

高架路包括300个不同高度的桩。这些桩已在靠近工地的地方分多个部分预制。垂直后张拉杆将每根桩的所有段组装在一起。

这种桩的施工方法越来越常见，但无论是在方法说明还是产品定义方面都需要完美的准备。每个细节都是安装成功的基础。

Dextra 向 Freyssinet 提供了超过 1,000 吨的 Freyssibar+ 系统，等级为 930/1080 MPa，公称直径为 72mm 和 55mm，以及用于垂直永久应用的 7,500 个锚具。

通过 DEXTRA、Freyssinet 后台（技术部门和 Freyssinet 产品公司）和工作现场工作人员（Freyssinet 主要项目和 Freyssinet 澳大利亚）之间的密切合作，后张法系统已完美适应该项目的需求。

钢筋直径、钢级和锚固设计已根据澳大利亚标准通过资格测试进行验证，展示了系统的性能。

该杆系统可用于后张法、预应力地锚以及任何涉及临时或永久拉杆、提升、悬挂、预应力拼接等的应用。

重大项目于2018年1月开工建设。

巴尔-博尔贾雷高速公路 – 四个高架桥

发表于 通过 Sir Gwi

Bar-Boljare highway – Four 高架桥

The Bar-Boljare Highway Project is a key infrastructure project led by the Ministry of Transportation and Maritime Affairs of Montenegro. It aims at improving the connections within the country and also between Montenegro and the rest of Europe to boost the country’s economy and tourism.

The project, built by China Road and Bridge Corporation (CRBC), embodies a new successful example of the cooperation between China and Eastern Europe. The new 2×2-way highway spans over 40 km. It is built in challenging terrains and yet satisfies both EU & Montenegro standards of road infrastructure. Its schedule is ambitious too: both roads and 高架桥 should be built in under 4 years. For the Bar-Boljare Highway Project, Dextra supplied its Bartec rebar coupler solution, used for the splicing of rebar in the piles of the four 高架桥. Dextra Bartec 连接方案 was chosen on that project for its compliance with ISO 15835 S2, which defines rebar couplers and 钢筋/增强筋 to be resistant to violent earthquake conditions. A total of 230,000 Bartec rebar couplers have been supplied to CRBC.

多哈连线（贾比尔堤道）

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多哈连线（贾比尔堤道）

 
Doha Link is a marine bridge project currently being built west of Kuwait City. It will ultimately be connected to the Main Causeway Across Kuwait Bay, another sea link project north of Kuwait City, which will make the Jaber Causeway sea link, one of the largest civil engineering projects ever built in the Middle East. The Doha Link stretches west of Kuwait City. It will ultimately solve traffic congestion and offer a direct itinerary thanks to a 7.7 km bridge structure built on shallow waters across the Kuwait Bay.  

Rebar 连接方案

Dextra参与了该建设项目的早期阶段，为陆上和海上基础桩的超大型钢筋笼的拼接提供技术解决方案。 Rolltec® couplers for large diameter rebar (32, 36, and 40mm) were used for the connection of cages and piers. Two grades of rebar are used across the project: ASTM Grade 60 and Grade 80. Rolltec is compatible by design with the higher ASTM Grade 80; the same couplers may be used on all applications, simplifying stock keeping. In addition, smaller diameter couplers for rebar 12mm and 16mm were used for the superstructure and the footing of light poles. One of the main advantages of Rolltec for remote projects is its very light machine setup. Rolltec is supported by a single one-man machine, offering a high level of productivity. Because the equipment is relatively small and the rebar preparation efforts were taking place simultaneously on both sides of the sea link construction, Dextra dispatched up to 4 machines on each side of the project to support the 桩 efforts.  

Sonitec 管解决方案

With large piles of 2.5m diameter and 60m depth on average, it was compulsory for GS E&C to conduct sonic logging tests to examine the integrity of concrete piles, requiring the installation of 8 tubes in each cage. To achieve very long tube length and optimize cage preparation output, Dextra 索尼泰克 was the preferred choice of the contractor. Thanks to its lightweight and unique Push-Fit® connection feature. Sonitec provides enough flexibility during the cage construction, lifting, and assembly of the cage and removes the need for additional time-consuming welding operations.

圣雄甘地·塞图康复中心

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圣雄甘地·塞图康复中心

圣雄甘地塞图（也称为甘地塞图或恒河塞图）是一座横跨印度比哈尔邦恒河的桥梁，连接巴特那和哈吉普尔。它是印度第三长的河桥，长5,750米。

近几十年来，由于通过桥梁的汽车数量增加，这座桥经历了严重的交通拥堵，导致桥梁超负荷运行，结构负担过重。它需要用钢框架替换混凝土上部结构。

Dextra participated in this renovation project by supplying RepairGrip couplers for the connection of old 码头 and new 码头 caps.

在拆除旧上部结构时，还提供了全螺纹钢筋以供各种应用。

翻新后的西侧于2020年7月31日向公众开放。

横跨科威特湾的堤道

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横跨科威特湾的堤道（贾比尔堤道）

 

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.

桥塔和梁

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

右旋糖苷 Smooth PT Bar 整个海上连接线均使用 835/1050 级材料将预制梁连接在一起。

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.

跨孔声波测井管

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.

安装后，管子牢固就位，支撑笼子的提升和搬运不会出现问题。

跨过泰连路

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跨过泰连路

The Cross Tay Link Road project in Perth and Kinross, Scotland, is set to transform transportation in the area. One of the notable features of this road construction endeavor is the inclusion of a three-span bridge over the magnificent River Tay, the longest river in Scotland. This project aims to enhance connectivity and improve travel efficiency for residents and visitors alike.

To ensure the structural integrity of the bridge’s foundation piles, Dextra provided a quantity of 1,920 tubes, amounting to 11,136 linear meters of Sonitec ST50. This specialized product is designed for pile integrity testing using the Crosshole Sonic Logging (CSL) method. It facilitates the evaluation of the quality and reliability of the foundation piles, ensuring the bridge’s long-term stability and safety.

Tân Vũ – Lạch Huyện 桥

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Tân Vũ – Lạch Huyện 桥

 

The Tan Vu–Lach Huyen Bridge is a 5.4-km-long bridge located east of Hai Phong, in the north of Vietnam. The bridge is connecting the Hai Han district (east of Hai Phong) to the new port of Lach Huyen, located on the island district of Cat Hai. This will also allow the port of Lach Huyen to be directly connected to the Hai Phong/Hanoi highway, drastically reducing the transit time to Vietnam’s capital city.

The bridge project is part of a broader infrastructure plan: the Tan Vu–Lach Huyen highway infrastructure project, which aims to develop Hai Phong as a main transportation hub in the North of Vietnam.

For this bridge project, Dextra supplied two types of post-tensioning systems:

  • For the permanent reinforcement of precast girder segments, Dextra supplied PT smooth bar systems with threaded ends in sizes M39 and M49, grade 835/1030 and 930/1080. Dextra bar systems are used for the vertical post-tensioning of concrete segments.

  • For the lifting and temporary fixing of the precast girder segments during the construction phase, Dextra supplied its fully threaded bar systems in diameters 32 and 36, grade 1080/1230.

For all temporary applications such as lifting and fixing operations, fully threaded PT bar systems are a convenient and economical solution, as they can easily be cut, adjusted, and reused several times. Thanks to their continuous thread, the bars can be spliced at any point by the use of couplers or turnbuckles, which are also available from Dextra.

For more information and engineering support regarding post-tensioning systems in Vietnam, please contact our office in Bangkok.