مجموعة دكسترا | اتصالات موثوقة

خط مترو الأنفاق سونجاي بولو-سيردانج-بوتراجايا (SSP).

خط مترو الأنفاق سونجاي بولو-سيردانج-بوتراجايا (SSP).

The Malaysian SSP Line is the second line of Klang Valley’s MRT System. The main purpose of this project is to provide a better railway infrastructure and transport system in order to serve Malaysia’s growing population.

Commuting through the heart of the Capital

The Malaysian SSP Line will connect Sungai Buloh to Putrajaya, running through the center of Kuala Lumpur and its suburbs. With its 35 stations, among which 11 will be providing connections to other lines, the SSP Line will allow commuters to transfer with ease to and from existing and planned rail lines.
The rail transit system involves the construction of more than 52 km: 13.5km of underground line and a 38.7km of elevated rail. Once operational, it is expected to have a ridership of 529,000 passengers per day.

Rebar couplers for D-wall and slab

For this large metro project, the contractor joint venture MMC-Gamuda has chosen Dextra’s popular rebar reinforcement solution بارتيك, supported by 3 sets of bar-end high-productivity equipment. Approximatively 200,000 pieces have been delivered as of April 2018.
دكسترا بارتيك have been used for productivity reasons. Couplers were embedded in the diaphragm walls surrounding the underground stations, providing horizontal connection points at a later stage of the project. After excavation, couplers are used to connect bars and start the station’s slabs.

For more information about our solutions in Malaysia, please contact Dextra’s Kuala Lumpur office.

Bangkok MRT Pink Line & Yellow Line

بانكوك MRT الخط الوردي والخط الأصفر

The MRT Pink Line & Yellow Line are elevated mass rapid transit line being built and operated by the BSR joint venture (BTS Group Holdings, Sino-Thai Engineering and Construction STEC, and Ratch Group RATCH) in Bangkok, Samut Prakan, and Nonthaburi Provinces, Thailand.

The MRT Pink Line monorail will be 34.5 kilometers long and have 30 stations. It will connect the northern districts of Bangkok and Nonthaburi with 5 mass transit lines that run along a key east-west transportation route.

The 30.4-kilometer Yellow Line will have 23 stations and will connect 6 other mass transit lines. It will provide mass transit along the heavily congested Lat Phrao road and Srinagarindra road corridors.

دكسترا was involved in these 2 MRT line extension projects by providing بارتيك splicing systems. More than 440,000 pieces of the couplers, size 16-32mm, were installed inside connecting slabs to connect guideway beams.

In addition, the contractor chose Dextra’s قضبان الرأس as an alternative to rebar hooks to avoid steel congestion in severely reinforced areas such as beam-column connections. Around 530,000 small headed bars were supplied to the construction sites.

The MRT Pink Line is expected to be operational by June 2022, with the Yellow Line following a year later.

رابط السكك الحديدية أودهامبور-سريناجار-بارامولا (USBRL)، الهند

رابط السكك الحديدية أودهامبور-سريناجار-بارامولا (USBRL)، الهند

Udhampur-Srinagar-Baramulla Rail Link (USBRL) هو مشروع ضخم للبنية التحتية من قبل السكك الحديدية الهندية في جبال الهيمالايا، وهو مصمم لتوفير اتصال السكك الحديدية إلى وديان جامو وكشمير. ويهدف هذا المشروع إلى تمكين الوصول إلى شبكة السكك الحديدية من جميع أنحاء البلاد وربط المناطق البعيدة مع بقية الهند، استجابة لرؤية رئيس الوزراء للهند الجديدة بحلول عام 2022.

وينقسم المشروع إلى ثلاثة أقسام - مسار أودهامبور-كاترا بطول 25 كم، ومسار كاترا-قاضيغوند بطول 129 كم، ومسار قاضيغوند-بارامولا بطول 118 كم. وقد تم بالفعل الانتهاء من أجزاء من الخطوط وتشغيلها.

For this massive project, Dextra supplied 3,000 sets of Self-Drilling Rock Bolts to stabilize loose rock mass after excavation.
ال الحفر الذاتي روك بولت is a bolting solution for unstable ground conditions and fractured rock formations. The loosening of the rock strata is prevented by drilling a hole in the rock, placing standard sacrificial drill bit and a hollow bar (made of steel or FRP): cementitious grout is then injected into the hollow bar.

مع اقتراب مشروع البنية التحتية الضخم من الاكتمال، سيربط USBRL جامو بكشمير، مما يفتح صفحة جديدة لنظام النقل الهندي.

محجر طريق أندرسون

مقلع طريق أندرسون - نفق

The Anderson Road Underpass is part of a larger land rehabilitation project taking place at the Anderson Road Quarry. The vast land of the quarry, located North East of Kowloon, will ultimately be used to house as many as 25,000 people over a 12 hectare area.

العصر الجديد للمحجر

After more than 60 years of supplying aggregate, asphalt, stone and concrete to infrastructure projects, the vast land of the quarry will be transformed in Hong Kong’s newest residential and commercial area. The ARQ will be capable to accommodate 25,000 people over a 12 hectare area.

Dextra’s steel rock bolts for ground engineering and tunneling

The Anderson Road Underpass is a tunnel project lead by the joint venture of contractors Chun Wo, STEC and Vasteam JV, supervised by consulting firm Aurecon.
For this project, Dextra supplied to subcontractor Shun Yue Engineering Company Ltd. steel rock bolts used for the tunnel roof support. More than 1,500 steel rock dowels, along with 100nos lattice girders and 500 umbrella piles were successfully installed on this project.

تم اختيار Dextra لهذا المشروع نظرًا لتوسعه ground engineering and tunneling تتمتع بخبرة كبيرة في هونغ كونغ، حيث قامت بتزويد العديد من مشاريع الطرق الكبيرة وأنفاق المترو في هونغ كونغ على مدار العشرين عامًا الماضية.
لمزيد من المعلومات حول حلولنا الهندسية الأرضية في هونغ كونغ وماكاو، يرجى الاتصال بنا مكتب هونج كونج.

مترو الأنفاق أورانج لاين (المركز الثقافي التايلاندي – مين بوري)

مترو الأنفاق أورانج لاين (المركز الثقافي التايلاندي – مين بوري)

Bangkok’s MRT Orange Line is one of the planned rapid transit lines of the Mass Rapid Transit Authority of Thailand (MRTA). The main purpose of this 39.5-kilometer railway line is to improve the connection between western, central and eastern parts of Bangkok, and consequently ease the Thai capital’s traffic congestion. This project is also part of Thailand’s plan to stimulate the national economy and improve the infrastructure.
ينقسم خط مترو الأنفاق البرتقالي إلى قسمين: من بانج خون نون إلى المركز الثقافي التايلاندي، ومن المركز الثقافي التايلاندي إلى مين بوري - ويضم 22 محطة تحت الأرض و7 محطات مرتفعة.

دكسترا GFRP عيون ناعمة for tunnel construction

For the Thailand Cultural Centre – Min Buri section, the contractor Joint-Venture of Italian-Thai Development and CKST opted for more than 40 units of Dextra’s turnkey solution for tunneling FRP Soft-Eye.
Being well-known for its unique cut-ability technology, Glass Fiber Reinforced Polymer (GFRP) Soft-eyes facilitates break-ins and break-outs of the Tunnel Boring Machine (TBM). This is in fact the best alternative to conventional steel reinforcement – which would require mobilization of additional manpower and equipment.

دكسترا سونيتيك for Crosshole Sonic Logging (CSL) tests

In order to verify the integrity of concrete in deep foundations, Italian-Thai Development, CKST JV and Unique Engineering have also chosen Dextra’s cross-hole sonic logging tubes – سونيتيك. These CSL tubes are available in several diameters, and have been specifically designed for easy and fast handling to accelerate construction speed. Over 30,000 tubes have been delivered to the project as of March 2022.

Complete rebar splicing solutions applied for the metro’s D-walls

To optimize the reinforcement of the Diaphragm Walls (D-Walls), بارتيك, one of Dextra’s mechanical الربط حديد التسليح systems, was installed. Thanks to its easy-to-install characteristic, بارتيك helps accelerate the projects schedule and reduce inventory as the standard coupler can also be used for Position splices. More than a million of بارتيك couplers have been delivered to the site.

Moreover, around 7,000 headed bars were applied at the end of the reinforcement bar as an alternative to hooks in congested areas of the structure.

لمزيد من المعلومات حول حلولنا المتاحة في تايلاند، يرجى الاتصال بنا مكتب بانكوك.

High Speed 2 (HS2), United Kingdom

High Speed 2 (HS2), United Kingdom

The UK’s ambitious High Speed 2 (HS2) project, encompassing 140 miles of track, four state-of-the-art stations, two depots, 32 miles of tunnel, and 130 bridges, is set to redefine sustainable travel and foster economic regeneration for generations to come. دكسترا is proud to play a vital role in this transformative endeavor by supplying جريبتيك couplers to various HS2 sites, ensuring the structural integrity and resilience of this extensive rail infrastructure.

Picture: Victoria Road Crossover Box Site

Our جريبتيك couplers, known for their high-performance rebar connections, have been deployed across numerous key sites, including the Long Itchington Wood Tunnel, Old Oak Common Station, Victoria Road Crossover Box, Colne Valley Viaduct, Chiltern Tunnel and Ventilation Shafts, Thame Valley Viaduct, Curzon Street Viaducts, Edgcote Viaduct,  Canterbury Road Works Headhouse and Ventilation Shaft, and many more. The couplers have been integral in connecting rebars for primary collars, piers, base slabs, crown beams, buttresses, and deck segments, ensuring robust and reliable structural connections.

Picture: Chiltern Tunnel and Ventilation Shafts Site

Spotlight on Long Itchington Wood Tunnel: A Legacy of Environmental Responsibility

One of the largest construction sites for HS2 is at Long Itchington Wood, where a 1-mile twin bore tunnel is being built. The tunnel serves a critical purpose: preserving the ancient woodland of Long Itchington by diverting the railway underground. To facilitate the launch of the tunnel boring machine (TBM), a massive excavation at the north portal site was necessary. This involved the removal of approximately 250,000 cubic meters of material, which was then repurposed to form environmental embankments along the mainline.

دكسترا supplied nearly 20,000 جريبتيك standard and position couplers in diameters ranging from 12mm to 40mm for the tunnel construction. These couplers were used in the جدران الحجاب الحاجز, pile caps, and portals, ensuring the durability of connections in the deep and challenging excavation environment. The جريبتيك system, comprising one male and one female sleeve extruded onto the rebar, facilitated efficient and secure rebar connections that are essential for large-scale projects like HS2.

ال جريبتيك female sleeves were initially installed at the top of the diaphragm wall. Position assembly—a technique that accommodates non-rotatable rebars—was employed to connect the female sleeves to male sleeves on L-shaped bars within the roof slab. This reinforcement approach was extended to pile caps and later stages of construction, where the couplers reinforced the crown beam by connecting with bent bars through lap length.

Picture: Long Itchington Wood Tunnel Site

Empowering Infrastructure with Technological Innovation

As HS2 progresses, Dextra’s جريبتيك couplers continue to enable rapid and reliable rebar connections, supporting the project’s commitment to quality, safety, and sustainability. By contributing advanced construction solutions, we are proud to be part of HS2’s legacy of environmentally responsible travel, economic regeneration, and technological innovation. Our role in HS2 reflects Dextra’s dedication to advancing infrastructure through high-performance products that meet the needs of complex and large-scale projects.

ال High Speed 2 project is poised to transform the UK’s transportation landscape, and with Dextra’s جريبتيك couplers in place, the rail network is set to endure and thrive for generations to come.

القاهرة مونوريل

القاهرة مونوريل

قطار مونوريل القاهرة هو نظام نقل سريع مكون من خطين في القاهرة، مصر، وهو قيد الإنشاء حاليًا. عند الانتهاء من المشروع، سيوفر الخطان أول خطوط مواصلات عامة من العاصمة الإدارية الجديدة ومدينة السادس من أكتوبر إلى منطقة القاهرة الكبرى.

سيستغرق الخط البالغ طوله 54 كيلومترًا بين المدينة الإدارية الجديدة وشرق القاهرة 60 دقيقة، بينما سيستغرق الخط البالغ طوله 42 كيلومترًا بين مدينة 6 أكتوبر والجيزة 42 دقيقة.

دكسترا supplied more than 300,000 بارتيك standard and bridging couplers for the connection of reinforcement bars. بارتيك is simple to install and does not require professional skilled labor, which reduces labor on the job site, formwork costs, and increases job site safety.

Around 400,000 بارتيك headed bars were also installed as a replacement for قضبان مدمن مخدرات in concrete members and connections.

Moreover, the project used يونيتيك bolted couplers in repair works for the connection of two rebars which have not or cannot be threaded.

وسيتم افتتاح المرحلة الأولى من النظام للجمهور في عام 2022، تليها المرحلة الثانية في عام 2023.

رابط مطار فورستفيلد

رابط مطار فورستفيلد

The Forrestfield Airport Link is a rail infrastructure project lolcated in Perth, Western Australia. The 8.5km line will connect the existing Midland Line to Perth International Airport and further to the eastern suburbs. The project features two twin-tunnels bored with Tunnel Boring Machines (TBMs) which move up to 26 meter underneath the bed of Swan river, highways and Perth Airport, adding three new stations to the city’s transportation network: Belmont, Airport Central and Forrestfield.

Forrestfield metro plan

For the tunnel boring packages, دكسترا supplied a total of 10 GFRP عيون ناعمة between 2016 and 2017 (two for Airport Central Station, two in Abernethy, four in Belmont and two in Bayswater) to the contractor JV of Salini Impregilo and NRW Salini Impregilo. عيون ناعمة are rebar cages made mostly of Glass-Fiber Reinforced Polymer (GRFP) bars and some steel rebar. عيون ناعمة can be cut by the TBMs and allow faster equipment breakthrough, saving precious time while avoiding to damage the TBM heads.

دكسترا also supplied a total of 65,000 جريبتيك connections for the station works. جريبتيك is distributed in Western Australia by Dextra’s partner InfraBuild Construction Services. They offer the complete service to the contractor: Cutting the rebar, preparing the bar ends with جريبتيك sleeves and bending them for final installation on site. This allows the contractor to achieve faster cycle times in rebar connection on site .

سونيتيك, Dextra’s steel tubes for Crosshole Sonic Logging tests (to check concrete integrity in bored piles) were also supplied.

The Forrestfield-Airport Link will operate in 2022.

For more information about our solutions in Australia, please consult our Bangkok office

خط مترو بروكسل 3

خط مترو بروكسل 3

Brussels Metro is a rapid transit system that serves a large portion of the Brussels, Capital Region of Belgium. It consists of 4 conventional metro lines and 3 pre-metro lines.

Line 3 is a tram line that runs through the city center from Churchill in the south to Esplanade in the north, using the North-South Axis tunnel. The total route will be 10.3km long.

An 150m long new tunnel was dug underneath the Brussels North railway station to connect two existing underground tunnels. It was an important component of the new metro link.

Dextra supplied سونيتيك, a tube solution that facilitates the integrity testing of foundations using the CSL testing method, to the construction site of Line 3. 13 kilometers of the tubes were installed in the 18m long pile cages.

ال سونيتيك system has been designed with the sole purpose of being easy to assemble and install in reinforcement cages.

Cairo Metro Line 4 – Phase 1

Cairo Metro Line 4 – Phase 1

The Cairo Metro is a rapid transit system in Greater Cairo, Egypt. It was the first of three fully-fledged metro systems built in Africa, as well as the first in the Arab world. It began service in 1987 as Line 1 between Helwan and Ramsis Square, covering a distance of 29 kilometers.

The Cairo Metro currently has 74 stations, 3 of which are transfer stations, with a total length of 89.4 kilometers as of August 2020. There are three operating lines in the system.

The new line, line 4, will run from Makram Ebeid Station to Police Academy Station near the Ring Road, with bored tunnels following Doctor Hassan El-Sherif Street and Ahmed El-Zomor Street. It will be 24 kilometers in total length.

Construction began in Q3 2019 and is expected to be completed in 2024.

Dextra has supplied 450,000 Bartec+ couplers and 42 GFRP soft-eyes for the reinforcement of the جدران الحجاب الحاجز.

Bartec+ is a mechanical splicing system with parallel threads for connecting concrete reinforcement bars with diameters ranging from 12 to 50 mm (ASTM #4 to #18). The threaded rebars are tensile tested at 90% of the rebar yield strength.

Dextra’s GFRP soft-eyes solution is an integrated turn-key solution that uses cut-able Glass Fiber Reinforced Polymer (GFRP) reinforcement as an alternative to traditional steel rebars, allowing the penetration of Tunnel Boring Machines (TBM) to pass through جدران الحجاب الحاجز with ease.