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Рубрика: Проекты

My Home GRAVA Hyderabad, India

Опубликовано на от Sir Gwi

My Home GRAVA Hyderabad, India

 

В самом сердце Хайдарабада, Индия, обретает форму выдающееся свидетельство архитектурного совершенства и инженерных инноваций – проект My Home GRAVA. Этот мегапроект, состоящий из восьми 43-этажных башен, является символом современной жизни и технологического прогресса в строительной отрасли. Одним из ключевых факторов успеха этого колоссального предприятия является компания Dextra, мировой лидер в предоставлении инновационных решений для строительного сектора.

Оптимизация проектирования и строительства:

My Home Construction, дальновидный разработчик GRAVA, приложил все усилия для оптимизации методологий проектирования и строительства. С самых ранних этапов планирования основное внимание уделялось реализации проекта, который не только переосмысливает роскошную жизнь, но и устанавливает новые стандарты эффективности и устойчивости в строительстве.

Муфты Dextra: структурная революция:

At the core of GRAVA’s construction success is the implementation of 570,000 Гроутек couplers and more than 70,000 Бартек couplers for all structural connections within the concrete frame. These couplers play a pivotal role in ensuring the structural integrity of the buildings, providing a secure and efficient connection between the precast elements.

The Гроутек и Бартек couplers are known for their high-performance capabilities, making them ideal for large-scale and complex projects like GRAVA. These couplers eliminate the need for traditional lapped splicing, offering a faster and more reliable alternative for connecting and reinforcing concrete structures and precast concrete elements. This not only accelerates the construction process but also enhances the overall durability and safety of the structure.

As the My Home GRAVA project continues to rise and reshape the skyline of Hyderabad, it stands as a testament to the successful collaboration between visionary developers and innovative construction solution providers. Гроутек и Бартек couplers have played a crucial role in the seamless construction of the eight 43-storey towers, contributing to the project’s efficiency, strength, and durability.

Проект не только обещает роскошную жизнь, но и устанавливает новый стандарт качества строительства в Индии, а вклад Dextra оставил неизгладимый след в его успехе.

 

Мумбаи Транс Харбор Линк

Опубликовано на от Sir Gwi

Мумбаи Транс Харбор Линк

The Mumbai Trans Harbour Link (MTHL) is a 22 km-long road bridge in India, connecting the Mumbai Metropolitan Region with its satellite city, Navi Mumbai.

Also known as the Sewri-Nhava Sheva Trans Harbour Link, the bridge begins in Sewri, South Mumbai, crosses the Thane Creek via a 16.5 km-long bridge, and terminates in Chirle village, near Nhava Sheva.

This colossal project features a 6-lane highway, 27 meters wide, along with two emergency exit lanes. Designed to accommodate approximately 70,000 vehicles per day, the bridge is expected to significantly reduce the notorious traffic congestion in the Greater Mumbai area.

Originally envisioned more than 35 years ago, actual construction only began in 2018. Once completed, it will be India’s longest sea bridge.

 

Dextra’s Contribution

Dextra played a key role in this project by supplying over 30,000 Сонитек sonic tubes. These tubes facilitate Cross Sonic Logging (CSL) testing, a method used to assess the structural integrity and homogeneity of concrete within barrette piles.

With a conveniently enlarged bell-mouth design, Sonitec tubes enable the seamless connection of two tubes, making installation quick and efficient within reinforcement cages.

 

CCTV Headquarters, China

Опубликовано на от Sir Gwi

CCTV Headquarters, China

The CCTV Headquarters building is a landmark tower located in the Central Business District of Beijing. The tower houses the operations of China Central Television (CCTV) and has been one of the architectural landmarks of the Chinese capital since its completion in 2012.

For this project, Dextra was involved in providing China State Construction Engineering Corporation with an anchoring solution for the columns that ultimately support the building’s bridge-like complex architecture.

Anchoring the structure was particularly challenging due to the building’s height (234 meters) and its distinctive, complex shape. Additionally, since the building is located in a seismic zone, it needed to be constructed to withstand additional loads.

Dextra supplied high-tensile post-tensioning bar systems in large diameters. The post-tensioned system was designed to lock the metallic structure at the base of the mega columns and anchor them into a heavily reinforced mat.

The large PT systems (bars and plates) were equipped with additional corrosion protection accessories, including tubes and injection ports, allowing for grout sealing.

Валансьенская тетива

Опубликовано на от Sir Gwi

Валансьенская тетива

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.

 

Jumeirah Beach Residence, UAE

Опубликовано на от Sir Gwi

Jumeirah Beach Residence, UAE

Jumeirah Beach Residence is a large waterfront residential complex located along the Persian Gulf in Dubai Marina, United Arab Emirates.

The residential area comprises more than 40 towers, many of which reach 40 stories. In total, Jumeirah Beach Residence can accommodate over 15,000 residents.

Dextra Middle East, also based in Dubai, was involved in numerous tower packages between 2003 and 2005.

Foundation Piles

To provide vertical connections in foundation piles, Dextra supplied its popular Бартек rebar coupler solution—the most trusted rebar splicing solution in the Middle East—through its fabrication partners.

As a complement to the couplers, more than 70,000 meters of Сонитек tubes were supplied to the piling contractor, offering a practical and safe method for assembling sonic tubes and significantly boosting productivity.

Плот и колонны

Бартек couplers were also used for horizontal connections in the thick foundation rafts and vertical connections in the protruding columns.

Core Wall-to-Beam Приложения

In the superstructure, Бартек couplers were used for horizontal connections between the core walls and beams.

For this application, couplers were cast into the core wall, flush with the formwork. A thread protection cap, supplied by Dextra, prevented concrete leakage into the Бартек муфта.

At a later stage, continuation rebars, pre-threaded with Бартек threads, were connected into the pre-installed couplers, creating starter bars.

Пелешацкий мост

Опубликовано на от Sir Gwi

Пелешацкий мост

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.

Скоростная автомагистраль Себу-Кордова (CCLEX), колоссальный мост на Филиппинах.

Опубликовано на от Sir Gwi

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 viaducts, 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.

Вантовый мост, соединяющий Себу и остров Мактан

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 viaducts 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 reinforcement of the colossal expressway’s foundations, the contractor has chosen Dextra’s well-known rebar splicing solution Бартек. 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’ piling cages as of July 2018. Moreover, to provide better end anchorages in congested areas, the CLJV opted for Dextra Bartec стержни с головкой, which are also known as end anchors. Bartec end anchors are a convenient alternative to крючковые стержни, traditionally used for anchoring. For more information about rebar coupler availability in the Philippines, please contact our Офис в Бангкоке.

Туннель Западные ворота

Опубликовано на от Sir Gwi

Туннель Западные ворота

Проект туннеля Западных ворот станет жизненно важной альтернативой мосту Западных ворот, обеспечив столь необходимую вторую переправу через реку, более быстрые и безопасные поездки и удалив тысячи грузовиков с жилых улиц.

Проект свяжет автостраду Западных ворот в Ярравилле с портом Мельбурна и CityLink в Доклендсе через двойные туннели под Ярравиллом и эстакаду Футскрей-роуд.

Эстакада включает в себя 300 свай переменной высоты. Сваи были собраны из нескольких сегментов рядом с площадкой. Вертикальные стержни пост-напряжения собирают вместе все сегменты каждой сваи.

Этот способ возведения свай получает все большее распространение, но требует безупречной подготовки, как с точки зрения постановки метода, так и определения изделий. Каждая деталь имеет решающее значение для успеха установки.

Компания Dextra поставила компании Freyssinet более 1000 тонн систем Freyssibar+, класс прочности 930/1080 МПа, номинальные диаметры 72 мм и 55 мм, а также 7500 анкерных креплений для постоянного вертикального применения.

Благодаря тесному сотрудничеству между DEXTRA, бэк-офисом Freyssinet (технический отдел и компания по производству продукции Freyssinet) и персоналом рабочей площадки (Freyssinet Major Project и Freyssinet Australia) система пост-натяжения была идеально адаптирована к потребностям проекта.

Диаметры стержней, марка стали и конструкция креплений были проверены в ходе квалификационных испытаний в соответствии с австралийскими стандартами, демонстрируя эффективность системы.

Эту стержневую систему можно использовать для пост-натяжения, предварительно напряженных анкеров заземления и любого применения, включающего временные или постоянные тяги, подъем, подвеску, предварительно напряженные соединения и т. д.

Строительство масштабного проекта началось в январе 2018 года.

Mecca Mataf Expansion, Saudi Arabia

Опубликовано на от Sir Gwi

Mecca Mataf Expansion, Saudi Arabia

Mataf is the area surrounding the Kaaba, the center of the holiest mosque in Islam, located within the Grand Mosque of Mecca. It is where the Tawaf, the counterclockwise circumambulation around the Kaaba, takes place.

The Mataf expansion is a large-scale project aimed at adding 1,300,000 sqm to the existing 400,000 sqm of space. The renovation will feature a new basement and three additional floors, increasing capacity for hundreds of thousands of additional worshippers.

For this significant project, Dextra Middle East has been involved in supplying rebar couplers and anchor solutions.

Mega Columns

For the mega columns, Dextra provided contractors with a solution to connect cages vertically while accommodating potential misalignment. This was achieved using Бартек caging assemblies, which allow for a misalignment adjustment equivalent to one bar diameter.

In addition to enabling reconnection, the Бартек caging assemblies were also used to temporarily lock the large column template (visible in red in photos) to ensure the correct setup of column reinforcement.

Mega Column Footing

Декстра Бартек Бары во главе, which use the same type of threads as the couplers, were also installed at the footing of the mega columns to address reinforcement congestion.

The anchors, compact and easy to install, can be set on bars during the final stage of reinforcement installation. In this project, the anchors were installed from the top of the raft onto the vertical bars. More than 100,000 Бары во главе were used in this type of application, appearing as X-shaped reinforcement at the column footing.

Column-to-Beam Connections

For more standard applications, Бартек couplers were also used to create horizontal connections between the columns and beams.

Шоссе Бар-Боляре – Четыре виадука

Опубликовано на от Sir Gwi

Bar-Boljare highway – Four viaducts

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 viaducts 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 viaducts. Dextra Bartec splicing solution was chosen on that project for its compliance with ISO 15835 S2, which defines rebar couplers and reinforcements to be resistant to violent earthquake conditions. A total of 230,000 Bartec rebar couplers have been supplied to CRBC.