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卡克拉帕尔原子电站 3 号和 4 号

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卡克拉帕尔原子电站 3 号和 4 号

卡克拉帕尔原子电站是印度一座核电站，位于古吉拉特邦苏拉特河和塔皮河附近。

3 号和 4 号机组是印度第一对自行设计的 700 MW 加压重水反应堆 (PHWR)，位于古吉拉特邦的卡克拉帕尔，其中两台 220 MW PHWR 机组已投入运行。

The first concrete pour for Kakrapar 3 and 4 took place in November 2010 and March 2011 respectively, after Atomic Energy Regulatory Board (AERB) approval.

Since then, Dextra had supplied 540,000 巴特克 rebar couplers, to connect slabs and columns of reactor and control buildings.

Moreover, 联合技术公司 bolted couplers were installed to connect rebars without the need of any thread preparation.

Finally, 有头条 were mounted onto the reinforcement bar end, drastically reducing rebar congestion.

The commercial operation of Unit-3 is expected to be in March 2021 while its twin unit, Unit-4, is anticipated to start a year later.

图片来源：https://en.wikipedia.org/wiki/Kakrapar_Atomic_Power_Station，https://www.nucnet.org/news/kakrapar-3-indigenous-phwr-achieves-first-riticity-7-3-2020， https://www.asiavillenews.com/article/a-look-at-the-kakrapar-3-reactor-54367

绿金杜巴一体化太阳能联合循环电站

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绿金杜巴一体化太阳能联合循环电站

Duba ISCC Green Power Plant 1 is a large power infrastructure project located in the northwest of Saudi Arabia, along the Red Sea. The ISCC (Integrated Solar Combined Cycle) technology adds 50 MW of solar power to the gas and steam turbines, generating a total of 500 MW of electricity.

For this project, Dextra supplied Double Corrosion Protection Ground Anchors, used as a permanent anchoring solution for the excavation work preparing the pumping chamber. A total of 264 anchors (Grade 1080/1230, Ø32 & 40 mm) were supplied and installed across four layers.

这 Double Corrosion Protection anchors supplied for this project were pre-grouted at the Dextra factory, applying the first layer of grout between the steel bar and HDPE sleeve. The pre-grouted segments were reconnected on-site using couplers. Pre-grouted anchors not only save time and reduce costs during on-site operations, but they also enhance overall anchor quality by ensuring that the first grout layer is applied in a factory-controlled environment.

现场安装由地基承包商宝华 (BAUER) 进行，该承包商执行钻孔、起重、安装、灌浆和后张拉作业。 Dextra 在安装的早期步骤中通过派遣岩土工程专家团队到现场提供指导。

一般安装顺序如下（如下图所示）：

  1. 从运输架上拆箱后，用耦合器拼接各段，并用热缩套管覆盖。
  2. 将组装好的锚从组装现场运输到吊装区域（每延米 13 公斤）。
  3. 锚头处的布线电缆用于控制下降。注浆管也沿着锚预先安装。
  4. 将30米锚连同注浆管插入钻孔中。
  5. 灌浆、施力后，将充满油脂的头帽安装在锚头上，保持锚与外界腐蚀性环境完全隔离。

有关我们在中东的挖掘和地面解决方案的更多信息，请联系我们 迪拜办事处.

昆士兰柯蒂斯液化天然气公司 (QCLNG)

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Queensland Curtis LNG (QCLNG) Project: A Major Coal Seam Gas to LNG Development

The Queensland Curtis LNG (QCLNG) project is located on Curtis Island, Gladstone, Queensland, Australia. It involves the conversion of coal seam gas (CSG) reserves into liquefied natural gas (LNG), as well as the expansion of CSG exploration and development in southern and central Queensland.

The project encompasses multiple components, including gas fields, pipelines, an LNG plant, a swing basin and channel, and shipping operations. Construction began in late 2010.

Dextra contributed to the project by delivering 307 tons of marine tie bars and accessories in Grade 460. These tie bars serve as anchorage for the anchor walls of the marine offloading facility.

邦巴公发电厂

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Bang Pakong Power Plant: Thailand’s First Natural Gas-Fueled Power Facility

Bang Pakong Power Plant is Thailand’s first power plant to use natural gas from the Gulf of Thailand as its primary fuel source.

Located on the left bank of the Bang Pakong River in Chachoengsao Province, the plant comprises both thermal units and combined cycle blocks, with a total capacity of 2,490 MW.

The plant was built to compensate for the loss of power-generating capacity following the decommissioning of the 1,050 MW Bang Pakong Combined Cycle Power Plant in 2014.

Dextra’s Contribution to the Project:

Dextra supplied a wide range of 巴特克 rebar couplers, ranging in size from 12 mm to 32 mm, for the construction of the plant’s cooling tower and combined cycle blocks. These couplers were used to reinforce and connect precast columns and precast beams.

Additionally, 格鲁泰克 couplers were installed in precast columns, providing a fast and efficient connection to the foundation at the construction site. Once the precast columns were lifted and placed into position, the embedded couplers were injected with grout, ensuring a secure and reliable connection.

Dextra products: Bang Pakong Power Plant

*泰国发电局。 Bang Pakong 发电厂，2019 年，www.egat.co.th/en/information/power-plants-and-dams?view=article&id=37。

惠斯通液化天然气厂

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惠斯通液化天然气厂

Wheatstone LNG is a liquefied natural gas (LNG) plant located in Western Australia. The plant is owned and operated by Chevron Australia.

Dextra was involved in the project between 2013 and 2014, contributing to the design and delivery of marine tie bars systems used to connect sheet pile walls and combi walls.

To facilitate installation and enable a multidirectional rotation angle of ±5°, Dextra Captive Nuts were embedded within the pile reinforcement and cast into concrete.

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Additionally, Dextra supplied waling beam systems (including channels and bolts) to provide structural support for the marine tie bars on the sheet piles.

Dextra’s systems are now anchoring the quay structure of the offloading facility, which can be identified as an L-shaped structure in the image above (copyright top picture: Chevron Australia).

敦刻尔克液化天然气接收站

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Dunkirk LNG Terminal: A Key Energy Infrastructure in France

The Dunkirk LNG Terminal is a new natural gas facility built in northern France. The project is owned by EDF (France’s main energy company), Fluxys, and Total. The terminal facilitates the importation of liquefied natural gas (LNG), which is transported at an ultra-low temperature of -163°C. It plays a crucial role in meeting the growing demand for natural gas in France and Belgium, supplying 20% of the total national consumption of these two European markets. It is the second-largest LNG terminal in continental Western Europe.

For this major energy infrastructure project, Dextra collaborated with Bouygues Travaux Publics to supply 格瑞普泰克, Dextra’s most advanced rebar splicing solution. Dextra provided the 格瑞普泰克 sleeves, while our local network of fabricators handled bar end preparation.

格瑞普泰克 was used in the following key applications:

  • Three reservoir external walls: Installed in vertical applications to reinforce structural integrity.
  • Congested areas: 格瑞普泰克 Headed Bars were used as a substitute for hook bars, optimizing space and reducing congestion.
  • Temporary openings: 格瑞普泰克 was also applied in various parts of the project to create temporary openings, facilitating the movement of personnel and equipment through the reinforcement.

For more information on similar applications, please refer to the Tanger Med 2 Port project, also completed by Bouygues.

For details about 格瑞普泰克 and rebar splicing solutions in Western Europe, please contact our 巴黎办事处.

新加坡2号SLNG

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Singapore SLNG No.2: A Key LNG Hub in Southeast Asia

The Singapore LNG (SLNG) No.2 terminal is a liquefied natural gas (LNG) facility located in Singapore. The terminal houses four large LNG storage tanks and is capable of receiving the largest LNG carriers, including Q-Max carriers. As a strategic LNG hub for Southeast Asia, the terminal plays a crucial role in the region’s energy infrastructure.

For the Singapore LNG offloading facility, Dextra assisted contractor Samsung with the design and supply of a complete marine tie bar system, used to reinforce the sheet pile walls.

Dextra’s tie bar assemblies were manufactured using Grade 500 steel and were anchored to the sheet pile walls using waling beams, plates, and nuts.
To facilitate installation and provide flexibility, large-diameter ball cages were installed, allowing a multidirectional rotation angle of ±10°.

image00 1

Additionally, to adjust tie rod lengths and splice long tie bars together, turnbuckles were supplied as part of the system.

贝洛蒙特大坝

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贝洛蒙特大坝

The Belo Monte Dam is a hydroelectric dam built on the Xingu River in the state of Pará, northern Brazil. Upon its inauguration, it will become the second-largest dam in Brazil and the fourth-largest in the world, with a total maximum capacity of 11,233 MW.

For this major dam project, Dextra Do Brasil continuously delivered to contractors its Rolltec 机械钢筋拼接 2011年至2016年间的解决方案。

Rolltec is the most popular rebar splicing solution in Brazil, offering a competitive alternative to lap splices.

A total of 250,000 couplers have been used in the Belo Monte Dam, incorporated across all parts of the structure.

Rebar preparation is supported by a unique lightweight machine, which can be operated by a single person.

The Rolltec machine is relatively easy to transport and convenient to install, even in remote locations such as dam construction sites.

Fécamp海上风电场

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Fécamp海上风电场

The 497 MW wind farm, located between 13 and 22 kilometers off the coast of Fécamp, France, includes 71 Gravity Based Structures (GBS), each of which will support a 180-meter-high windmill. The project will generate electricity equivalent to the power needs of more than 416,000 homes.

Dextra Fortec couplers and 有头条 were supplied to provide the following benefits:

Fortec Couplers

  • Used for temporary openings to facilitate the movement of materials and personnel during various stages of construction.
  • 充当混凝土墙起始杆与延续杆连接。
  • Enhanced constructability by supporting climbing formwork, enabling faster GBS building cycles.
  • Improved rebar congestion by preventing overlapping splices.

Dextra couplers utilize Parallel Thread technology. The same couplers are used for both standard connections (when the continuation bar can be rotated) and position connections (when neither bar can be rotated). For the Fécamp project, the site was equipped with threading equipment sets.

钢筋锚固板

  • Improved buildability and on-site productivity by reducing rebar congestion and the steel-to-concrete ratio.
  • Served as shear wall cross ties, offering an alternative to rebar with hooked anchorage.
  • Suitable for sequenced concrete pours and seismic design.
  • Quick to install, reducing labor and crane time.
  • The head can be removed for easier rebar positional adjustments.
  • Enhanced concrete compaction and surface quality, minimizing honeycombing.

右旋糖苷 有头条 were used as an efficient solution for the vertical 钢筋/增强筋 of the foundation. They serve as an excellent alternative to standard 弯钩, which are challenging to install, especially when bent on both ends. They also replace the need for a bonded length of straight or bent rebar used for anchorage.

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卡拉奇核电站 (KANUPP)

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卡拉奇核电站 (KANUPP)

Karachi Nuclear Power Plant (KANUPP), Pakistan’s first nuclear plant, is undergoing a 2.2 GW capacity extension with two pressurized water reactor units of Chinese design (PWR, Hualong 1).

This historical power plant has been in service with a single 137 MW reactor unit (KANUPP-1) since 1972. It is owned and operated by the Pakistan Atomic Energy Commission (PAEC).

The construction of the KANUPP-2 and KANUPP-3 reactors began in August 2015 and May 2016, with commercial operations scheduled to begin in 2021 and 2022, respectively.

The Dextra 格瑞普泰克 coupler was selected for connecting steel rebars to reinforce the reactor’s concrete shell, which is designed to successfully withstand an aircraft crash (APC).

More than 1 million units of 格瑞普泰克 standard, position, and transition couplers—mainly with a diameter of 40 mm—have been delivered.

格瑞普泰克 is well-known for its reliability and performance in tension, compression, and fatigue, thanks to its unique design that complies with the world’s most stringent project specifications, particularly for nuclear reactor building construction.