Grupo Dextra | Conexões confiáveis

Grande Paris Express – Linha 15

Grande Paris Express – Linha 15

O Grande Expresso de Paris is currently the largest transport project in development in Europe.

The new 200km, 68-station automated railway network consists of a ring route around Paris (line 15) and three additional lines (16, 17 and 18) connecting adjacent neighborhoods.

Estas 4 novas linhas circularão a capital e ligarão a 3 aeroportos e muitas zonas comerciais. Transportará 2 milhões de passageiros por dia. A inauguração das linhas está prevista para etapas, com conclusão total do projeto prevista para 2030.

A construção da linha 15 começou em 2015, com seu primeiro trecho entre a estação de metrô Pont de Sèvres e a estação Noisy – Champs RER A.

Dextra was involved at that stage by providing 100,000 Fortec rebar couplers to connect the columns of the stations’ structure.

Additionally, Dextra supplied 15,000 meters of Sonitec sonic tubes to facilitate the structural integrity testing using the CSL (Cross Sonic Logging) method, thus ensuring the homogeneity of concrete within the deep piles and diaphragm walls that are being constructed for the future underground stations.

O primeiro trecho da linha 15 está previsto para ser inaugurado em 2020.

Sistema de Esgoto em Túnel Profundo (DTSS) – Fase 2

Sistema de Esgoto em Túnel Profundo (DTSS) – Fase 2

The Deep Tunnel Sewerage System (DTSS) is a used water infrastructure project being developed by the Public Utilities Board (PUB) of Singapore to meet the country’s long-term clean water needs.

DTSS deploys deep tunnels to convey used water to 3 centralised water reclamation plants (WRP) located in the coastal areas.

The used water is then treated and further purified into clean water to be supplied under the brand name NEWater, with excess treated effluent discharged to the sea through outfall pipes.

The project involves the construction of two large tunnels, 6.5m in diameter and with a total length of 80km, located about 50m below the surface, to carry sewage to 3 centralised WRPs.

The project is developed in two phases. The first phase was completed in 2008 and comprises a 48km-long underground tunnel system to channel the flow of water from existing gravity sewers to the Changi WRP in the east and Kranji WRP in the north.

The second phase will extend the tunnel system to the west through a 30km-long south tunnel, 60km of link sewers, the Tuas WRP and a 12-km deep-sea outfall.

For the second phase, Dextra supplied 1,210 rock bolts for stabilising the tunnel excavations and 8 Olhos macios GFRP for TBM breakthrough.

Soft Eye & Rock Bolt

Após a conclusão da fase 2, prevista para 2022, a fábrica NEWater na WRP de Tuas contribuirá com 55% da demanda total de água de Cingapura.

Além disso, o WRP de Tuas tratará 800 mil metros cúbicos de água usada por dia, tornando-se a maior instalação de biorreator de membrana do mundo.

Linha Vermelha de Tel Aviv, o primeiro sistema Light Rail da cidade

Linha Vermelha de Tel Aviv, o primeiro sistema Light Rail da cidade

A Linha Vermelha é a primeira seção do novo sistema Light Rail atualmente em desenvolvimento em Tel Aviv, Israel. A linha irá de Bat Yam, no sudoeste, até Petah Tikva, no nordeste.

A extensão total projetada da linha é de 24 km, compreendendo 34 estações, 10 das quais subterrâneas, incluindo um intercâmbio com os serviços da Israel Railways.

Para este projeto, a Dextra está atualmente fornecendo produtos para a construção de seis estações subterrâneas, incluindo Bialik, Abba Hillel, Arlozorov, Shaul HaMelech, Yehudit e Allenby.

More than 200,000 Bartec rebar couplers were supplied for paredes de diafragma and for the construction of the station boxes.

A Dextra também forneceu 50.000 m de Sonitec ST50 para facilitar o teste de integridade estrutural de estacas de fundação usando o método CSL (Crosshole Sonic Logging).
Sonitec is an easy-to-assemble and time-saving sonic tube solution, preferred among empilhamento and general contractors worldwide for more than 20 years.

A linha está atualmente programada para ser concluída em outubro de 2021, tornando-se o segundo serviço subterrâneo em operação em Israel.

Linha MRT Sungai Buloh-Serdang-Putrajaya (SSP)

Linha MRT Sungai Buloh-Serdang-Putrajaya (SSP)

A Linha SSP da Malásia é a segunda linha do sistema MRT de Klang Valley. O principal objetivo deste projeto é fornecer uma melhor infraestrutura ferroviária e sistema de transporte para atender a crescente população da Malásia.

Viajando pelo coração da Capital

A Linha SSP da Malásia conectará Sungai Buloh a Putrajaya, passando pelo centro de Kuala Lumpur e seus subúrbios. Com suas 35 estações, entre as quais 11 fornecerão conexões com outras linhas, a Linha SSP permitirá que os passageiros façam transferências com facilidade de e para linhas ferroviárias existentes e planejadas.
O sistema de trânsito ferroviário envolve a construção de mais de 52 km: 13,5 km de linha subterrânea e 38,7 km de trilho elevado. Quando estiver operacional, espera-se que tenha um tráfego de 529 mil passageiros por dia.

Acopladores de vergalhões para parede D e laje

For this large metro project, the contractor joint venture MMC-Gamuda has chosen Dextra’s popular rebar reinforcement solution Bartec, apoiado por 3 conjuntos de equipamentos de alta produtividade. Aproximadamente 200.000 peças foram entregues em abril de 2018.
Dextra Bartec foram usados por motivos de produtividade. Acopladores foram embutidos nas paredes diafragma que circundam as estações subterrâneas, proporcionando pontos de conexão horizontais numa fase posterior do projeto. Após a escavação, acopladores são utilizados para conectar as barras e iniciar as lajes da estação.

Para obter mais informações sobre nossas soluções na Malásia, entre em contato Dextra’s Kuala Lumpur office.

Linha de metrô Ahmedabad Gandhinagar Índia – Fase I

Linha de metrô Ahmedabad Gandhinagar Índia – Fase I

The Ahmedabad-Gandhinagar Metro Rail Project is a new mass-transit rapid transit system in Gujarat, West India. The project is being implemented by Metro Link Express for Gandhinagar and Ahmedabad (MEGA) and aims to meet the city’s growing population while providing commuters with a better transport system.
The total length of the metro’s first phase is 39.3km, with 33.3km of elevated section and 6 kilometers underground. The metro will connect suburbs in Ahmedabad along east-west and north-south axis, and the route will also be extended to Gandhinagar in Phase-2.
The construction of the first phase, comprising 32 stations connecting the four corners of the city, has been in progress since 2015. Being expected to operate in 2020, the first trial run of the metro line is scheduled for January 2019.

Tubos de perfilagem sônicos de aço para testes de integridade de concreto

For the first phase of the Ahmedabad metro, Dextra was involved in supplying its CSL solution Sonitec for the 6-kilometer long viaduct. Sonitec is Dextra’s sonic logging tube system for Cross-hole sonic logging tests. CSL method allows the contractors to verify the concrete integrity in D-walls, bored piles, drilled shafts, barrettes or in concrete piles. Sonitec helps facilitate the assembly and installation of long tubes in reinforcing cages by its Instant Connection characteristic. Thanks to its large bell-mouth, the tubes can be easily connected seamlessly.

Linha Rosa MRT de Bangkok e Linha Amarela

Linha Rosa MRT de Bangkok e Linha Amarela

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, e Ratch Group RATCH) in Bangkok, Samut Prakan, and Nonthaburi Provinces, Thailand.

O monotrilho MRT Pink Line terá 34,5 quilômetros de extensão e 30 estações. Ele conectará os distritos do norte de Bangkok e Nonthaburi com 5 linhas de transporte coletivo que percorrem uma importante rota de transporte leste-oeste.

A Linha Amarela de 30,4 quilômetros terá 23 estações e conectará outras 6 linhas de transporte coletivo. Ele fornecerá transporte de massa ao longo da estrada altamente congestionada de Lat Phrao e dos corredores rodoviários de Srinagarindra.

Dextra was involved in these 2 MRT line extension projects by providing Bartec 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 Barras com cabeça as an alternative to rebar hooks to avoid steel congestion in severely reinforced areas such as beam-column connections. Around 530,000 small barras de cabeça were supplied to the construction sites.

A Linha Rosa MRT deverá estar operacional em junho de 2022, com a Linha Amarela um ano depois.

Ligação ferroviária Udhampur-Srinagar-Baramulla (USBRL), Índia

Ligação ferroviária Udhampur-Srinagar-Baramulla (USBRL), Índia

Udhampur-Srinagar-Baramulla Rail Link (USBRL) is a gigantic infrastructure project by Indian Railways in the Himalayan Mountains, designed to provide rail connectivity to Jammu and Kashmir valleys. This project aims to enable access to the rail network from all parts of the country and connect faraway areas with the rest of India, in response to Prime Minister’s vision of a New India by 2022.

The project is divided into three sections – the 25 km Udhampur-Katra, the 129 km Katra-Qazigund and the 118 km Qazigund-Baramulla tracks. Parts of the lines have already been completed and made operational.

For this massive project, Dextra supplied 3,000 sets of Parafusos de rocha autoperfurantes to stabilize loose rock mass after excavation.
O Parafuso de rocha autoperfurante 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.

As the mega infrastructure project nears completion, the USBRL will link Jammu with Kashmir, opening up a new page for the Indian transportation system.

Pedreira da Estrada Anderson

Pedreira Anderson Road – Passagem subterrânea

A passagem subterrânea da Anderson Road faz parte de um projeto maior de reabilitação de terras em andamento na Pedreira da Anderson Road. O vasto terreno da pedreira, localizado a nordeste de Kowloon, será usado para abrigar até 25.000 pessoas em uma área de 12 hectares.

Nova era da Pedreira

Após mais de 60 anos fornecendo agregados, asfalto, pedra e concreto para projetos de infraestrutura, o vasto terreno da pedreira será transformado na mais nova área residencial e comercial de Hong Kong. A ARQ terá capacidade para acomodar 25.000 pessoas em uma área de 12 hectares.

Parafusos de rocha de aço da Dextra para engenharia de solo e tunelamento

O Anderson Road Underpass é um projeto de túnel liderado pela joint venture dos empreiteiros Chun Wo, STEC e Vasteam JV, supervisionado pela empresa de consultoria Aurecon.
Para este projeto, a Dextra forneceu ao subcontratado Empresa de engenharia Shun Yue Ltda. parafusos de aço para rocha usado para suporte do teto do túnel. Mais de 1.500 rochas de aço cavilhas, junto com 100nos vigas treliçadas e 500 pilhas de guarda-chuvas foram instalados com sucesso neste projeto.

A Dextra foi escolhida para este projeto pela sua extensa engenharia de solo e tunelamento experiência em Hong Kong, tendo fornecido vários grandes projetos de túneis rodoviários e metropolitanos em Hong Kong nos últimos 20 anos.
Para obter mais informações sobre nossas soluções de engenharia de solo em Hong Kong e Macau, entre em contato com nosso Escritório de Hong Kong.

Linha Laranja MRT (Centro Cultural da Tailândia – Min Buri)

Linha Laranja MRT (Centro Cultural da Tailândia – Min Buri)

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.
A Linha Laranja MRT é separada em duas seções: de Bang Khun Non ao Centro Cultural da Tailândia, e do Centro Cultural da Tailândia a Min Buri – compreendendo 22 estações subterrâneas e 7 estações elevadas.

Dextra PRFV Olhos Suaves 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 tunelamento PRFV Soft-Eye.
Being well-known for its unique cut-ability technology, Glass Fiber Reinforced Polymer (PRFV) Soft-eyes facilitates break-ins and break-outs of the Tunnel Boring Machine (TBM). This is in fact the best alternative to conventional steel reforço – which would require mobilization of additional manpower and equipment.

Dextra Sonitec 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 – Sonitec. 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 reforço of the Diaphragm Walls (D-Walls), Bartec, one of Dextra’s mechanical emenda de vergalhões systems, was installed. Thanks to its easy-to-install characteristic, Bartec helps accelerate the projects schedule and reduce inventory as the standard coupler can also be used for Position splices. More than a million of Bartec couplers have been delivered to the site.

Moreover, around 7,000 barras de cabeça were applied at the end of the reforço bar as an alternative to hooks in congested areas of the structure.

Para obter mais informações sobre nossas soluções disponíveis na Tailândia, entre em contato com nosso Escritório em Banguecoque.

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. Dextra is proud to play a vital role in this transformative endeavor by supplying Griptec couplers to various HS2 sites, ensuring the structural integrity and resilience of this extensive rail infrastructure.

Picture: Victoria Road Crossover Box Site

Our Griptec 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, cais, 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.

Dextra supplied nearly 20,000 Griptec standard and position couplers in diameters ranging from 12mm to 40mm for the tunnel construction. These couplers were used in the paredes de diafragma, pile caps, and portals, ensuring the durability of connections in the deep and challenging excavation environment. The Griptec 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.

Griptec mangas femininas were initially installed at the top of the diaphragm wall. Position assembly—a technique that accommodates non-rotatable rebars—was employed to connect the mangas femininas to male sleeves on L-shaped bars within the roof slab. This reforço 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 Griptec 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.

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