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.

Стальные трубы ультразвукового каротажа для испытаний на целостность бетона

For the first phase of the Ahmedabad metro, Декстра was involved in supplying its CSL solution Сонитек for the 6-kilometer long viaduct. Сонитек 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. Сонитек 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.

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.

Монорельсовая дорога MRT Pink Line будет иметь длину 34,5 километра и 30 станций. Он соединит северные районы Бангкока и Нонтхабури пятью линиями общественного транспорта, которые проходят по ключевому транспортному маршруту с востока на запад.

Желтая линия протяженностью 30,4 километра будет иметь 23 станции и соединит 6 других линий общественного транспорта. Он обеспечит общественный транспорт по сильно перегруженным дорогам Лат-Прао и дорожным коридорам Сринагариндра.

Декстра was involved in these 2 MRT line extension projects by providing Бартек 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 Бары во главе as an alternative to rebar hooks to avoid steel congestion in severely reinforced areas such as beam-column connections. Around 530,000 small стержни с головкой were supplied to the construction sites.

Ожидается, что розовая линия MRT заработает к июню 2022 года, а желтая линия появится годом позже.

Железнодорожное сообщение Удхампур-Сринагар-Барамулла (USBRL) — это гигантский инфраструктурный проект Индийских железных дорог в Гималаях, предназначенный для обеспечения железнодорожного сообщения с долинами Джамму и Кашмира. Этот проект направлен на обеспечение доступа к железнодорожной сети из всех частей страны и соединение отдаленных районов с остальной частью Индии в ответ на видение премьер-министра о создании Новой Индии к 2022 году.

Проект разделен на три участка: 25-километровый участок Удхампур-Катра, 129-километровый участок Катра-Казигунд и 118-километровый участок Казигунд-Барамулла. Часть линий уже завершена и введена в эксплуатацию.

For this massive project, Dextra supplied 3,000 sets of Self-Drilling Rock Bolts to stabilize loose rock mass after excavation.
The Самосверлящий болт 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.

Поскольку мегаинфраструктурный проект близок к завершению, USBRL свяжет Джамму с Кашмиром, открывая новую страницу для индийской транспортной системы.

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.
Оранжевая линия MRT разделена на два участка: от Банг Кхун Нон до Культурного центра Таиланда и от Культурного центра Таиланда до Минбури, состоящая из 22 станций метро и 7 надземных станций.

Декстра стеклопластик Мягкие глаза 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 (стеклопластик) 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.

Декстра Сонитек 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 – Сонитек. 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), Бартек, one of Dextra’s mechanical стыковка арматуры systems, was installed. Thanks to its easy-to-install characteristic, Бартек helps accelerate the projects schedule and reduce inventory as the standard coupler can also be used for Position splices. More than a million of Бартек couplers have been delivered to the site.

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

Для получения дополнительной информации о наших решениях, доступных в Таиланде, свяжитесь с нашим Офис в Бангкоке.

Каирская монорельсовая дорога — это двухпутная монорельсовая система скоростного транспорта в Каире, Египет, которая в настоящее время находится в стадии строительства. Когда проект будет завершен, две линии обеспечат первое сообщение общественного транспорта из Новой административной столицы и города 6 октября в столичный регион Каира.

Прокладка 54-километровой линии между Новым административным городом и Восточным Каиром займет 60 минут, а 42-километровая линия между Городом 6-го Октября и Гизой — 42 минуты.

Декстра supplied more than 300,000 Бартек standard and bridging couplers for the connection of reinforcement bars. Бартек 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 Бартек стержни с головкой were also installed as a replacement for крючковые стержни in concrete members and connections.

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

Первый этап системы откроется для публики в 2022 году, второй этап — в 2023 году.

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.

For the tunnel boring packages, Декстра supplied a total of 10 стеклопластик Мягкие глаза 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. Мягкие глаза are rebar cages made mostly of Glass-Fiber Reinforced Polymer (GRFP) bars and some steel rebar. Мягкие глаза can be cut by the TBMs and allow faster equipment breakthrough, saving precious time while avoiding to damage the TBM heads.

Декстра also supplied a total of 65,000 Гриптек connections for the station works. Гриптек 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 Гриптек sleeves and bending them for final installation on site. This allows the contractor to achieve faster cycle times in rebar connection on site .

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

Линия Форрестфилд-аэропорт заработает в 2022 году.

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

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 Сонитек, 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.

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

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 стеклопластик soft-eyes for the reinforcement of the мембранные стены.

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