Central Kowloon Route (CKR) – Central Tunnel, Hong Kong

Publié sur septembre 11, 2024octobre 24, 2024 par Kansuda Visesthanakorn

Central Kowloon Route (CKR) – Central Tunnel, Hong Kong

Dextra played a pivotal role in the construction of the Central Kowloon Route (CKR) – Central Tunnel project in Hong Kong by supplying Fortec+ couplers, along with steel rock bolts, expandable friction bolts, umbrella pipes, and post-tensioning bars for tunneling works. These mechanical rebar couplers were integral in ensuring strong and reliable connections within the road tunnel structure, meeting the stringent requirements for safety and durability.

The CKR, a major infrastructure project aimed at improving traffic flow across Kowloon, required advanced construction techniques. Dextra’s Fortec+ couplers, used in locations such as precast panels, tunnel access points, and driveways, contributed significantly to the project’s structural integrity and long-term performance. The Fortec+ system includes a rebar preparation process in which the threaded bar end is proof tested with a tensile load, ensuring non-destructive testing within the elastic zone of the reinforcing bar.

Image credit: Central Kowloon Route – Highways Department

San Shek Wan Sewage Treatment Works, Hong Kong

Publié sur août 2, 2024août 2, 2024 par Kansuda Visesthanakorn

San Shek Wan Sewage Treatment Works, Hong Kong

The San Shek Wan Sewage Treatment Works (STW) project in Hong Kong marks a significant step towards addressing the sewage disposal needs of the South Lantau region. As the population of South Lantau is projected to grow, with an ultimate population reaching approximately 12,600 by 2039, the sewage flow is anticipated to increase to 5,800 m³/day. To accommodate this, a comprehensive sewerage system is being constructed, which includes a trunk sewerage system for Pui O area, a secondary STW at San Shek Wan, and a village sewerage system for Lo Uk.

A critical component of this ambitious infrastructure project is the use of advanced materials and technologies to ensure its successful and sustainable completion. Dextra, a global leader in engineered construction products, has played a pivotal role by supplying Glass Fibre Reinforced Polymer (GFRP) soil nails for the excavation and lateral support (ELS) works.

The Role of GFRP Soil Nails in ELS Works

The excavation and lateral support works are essential to the project’s foundation and stability. The challenging geotechnical conditions in Hong Kong, characterized by complex soil and rock formations, necessitate the use of robust and reliable reinforcement solutions. GFRP soil nails, provided by Dextra, are ideal for such conditions due to their high tensile strength, corrosion resistance, and lightweight nature.

GFRP soil nails are used to stabilize slopes and excavations, preventing landslides and soil erosion. Their corrosion resistance is particularly beneficial in environments exposed to moisture and chemicals, such as sewage treatment works. This ensures a longer lifespan and reduced maintenance costs compared to traditional steel reinforcement.

Benefits of Dextra’s GFRP Solutions

Corrosion Resistance: Unlike steel, GFRP does not corrode when exposed to harsh environmental conditions. This makes it an excellent choice for the wet and chemically aggressive conditions present in sewage treatment works.
High Strength-to-Weight Ratio: GFRP offers a high tensile strength comparable to steel but at a fraction of the weight. This ease of handling and installation translates to time and labor savings.
Durability: The longevity of GFRP soil nails ensures the structural integrity of the excavation and lateral support systems over the extended operational life of the sewage treatment works.
Durabilité: By using GFRP, the project reduces its reliance on steel, thereby contributing to more sustainable construction practices.

Impact on the San Shek Wan STW Project

Dextra’s involvement and the implementation of GFRP soil nails have significantly enhanced the efficiency and sustainability of the San Shek Wan STW project. The advanced materials have ensured that the excavation and lateral support works are not only robust and reliable but also cost-effective over the long term.

Upon completion, the sewage from South Lantau will be conveyed to the newly constructed STW for proper treatment. The treated effluent will then be safely discharged into the sea about 1.4 km off the South Lantau coast, ensuring minimal environmental impact. This project represents a crucial infrastructure upgrade that will support the region’s growth and development while maintaining high environmental and operational standards.

Fortec+ Hong Kong Buildings Department Approved!

Publié sur mai 9, 2024mai 9, 2024 par Kansuda Visesthanakorn

Dextra, the leading provider of construction solutions, has received official approval for Fortec+ from the Buildings Department (BD) of the Government of Hong Kong. This approval marks a significant milestone not only for Dextra but also for the entire construction sector in the region.

The approval granted by the BD signifies the endorsement of Fortec+’s cutting-edge parallel thread mechanical splice system. This innovative solution has been proven to offer unprecedented efficiency, reliability, and safety in structural projects.

As the regulatory authority responsible for overseeing building construction and safety standards in Hong Kong, the BD’s endorsement serves as a testament to the reliability and compliance of Fortec+’s technology with local regulations and industry best practices.

“Bar Break” splicing system

Fortec+ is a complete tensile splice system, ensuring bar-break performance of up to 800MPa under tensile load.

Compliant with Hong Kong standards

Fortec+ meets the Buildings Department’s Code of Practice for Structural Use of Concrete 2013 and is listed on the Central Data Bank List of Building Materials.

Reliable solution

The Plus (+) entails additional testing of proof load, ensuring the most reliable connections through a single set of thread preparation equipment.

Technical support

Our team in Hong Kong are available to accompany you through each step of the design process using readily available CAD/BIM tools and during onsite installation.

Trusted by Various Iconic Projects Across Hong Kong!

Penny’s Bay and Kai Tak Community Isolation Facility

Central Kowloon Route – Central Tunnel

Trunk Road T2

Tseung Kwan O – Lam Tin Tunnel

Foundation for Public Housing Development at Pik Wan Road, Hong Kong

Publié sur mai 9, 2024mai 9, 2024 par Kansuda Visesthanakorn

The Foundation for Public Housing Development at Pik Wan Road, Hong Kong

The Foundation for Public Housing Development at Pik Wan Road stands as a testament to Hong Kong’s commitment to sustainable urban development and infrastructure enhancement. Situated amidst the vibrant cityscape, this construction project embodies a convergence of innovative engineering and community-focused initiatives.

At the heart of this endeavor lies the crucial aspect of slope stabilization—a fundamental requirement in Hong Kong’s hilly terrain, where land development often necessitates meticulous attention to structural integrity. Recognizing the significance of this aspect, the project turned to advanced solutions, seeking to marry effectiveness with environmental responsibility.

Enter Création, a renowned provider of engineering solutions renowned for its commitment to quality and innovation. Dextra’s contribution comprised over a thousand pieces of Glass Fiber Reinforced Polymer (GFRP) Soil Nails — a cutting-edge solution designed to address the specific challenges of slope stabilization. GFRP Soil Nails offer superior corrosion resistance, durability, and ease of installation while minimizing environmental impact.

Dextra’s GFRP solutions have earned the esteemed approval of various authoritative bodies in Hong Kong, including the Buildings Department, a crucial entity overseeing building codes, safety standards, and inspections. Additionally, they have garnered recognition from the Hospital Authority, ensuring their reliability and suitability for healthcare infrastructure. Moreover, recognition from the Housing Department and the Construction Innovation & Technology Fund (CITF) signifies their innovative edge and contribution to advancing construction practices in Hong Kong.

Tai Po Railway Pier – Reconstruction of Tai Po Kau Tide Gauge Station

Publié sur avril 2, 2024octobre 18, 2024 par Kansuda Visesthanakorn

Tai Po Railway Pier – Reconstruction of Tai Po Kau Tide Gauge Station, Hong Kong

Dans le paysage côtier dynamique de Tai Po Kau, dans les Nouveaux Territoires de Hong Kong, les projets d'infrastructure exigent des solutions robustes et résilientes. L'un de ces projets, le projet de reconstruction de la station marégraphique de Tai Po Kau, nécessitait des matériaux innovants pour résister aux défis uniques posés par son environnement. Dextra est intervenu pour fournir environ 1 000 mètres de Glass Fibre Reinforced Polymer (GFRP) rebar for the slab of the Tai Po Railway Pier, démontrant l'efficacité des matériaux composites avancés dans la construction marine.

Le projet de station marégraphique Tai Po Kau visait à revitaliser l'infrastructure existante, en renforçant sa résilience contre les forces de marée, la corrosion et la dégradation de l'environnement. Conscient des limites du renforcement traditionnel en acier dans les environnements marins, le projet a recherché des alternatives susceptibles d'offrir une durabilité et une longévité supérieures. Dextra Barres d'armature en PRV est apparu comme la solution idéale, offrant une résistance exceptionnelle à la corrosion, à la rouille et à la dégradation chimique généralement associée à l'exposition à l'eau salée.

Barres d'armature en PRV, composé de fibres de verre à haute résistance incorporées dans une matrice polymère, offre des propriétés mécaniques comparables à celles de l'acier mais avec des avantages supplémentaires. Notamment, Barres d'armature en PRV présente une conductivité thermique nettement inférieure, réduisant le risque de ponts thermiques et améliorant l'intégrité structurelle dans des variations extrêmes de température. De plus, ses propriétés non magnétiques éliminent les interférences électromagnétiques, ce qui le rend adapté aux applications sensibles telles que les stations marégraphiques.

L'application de Barres d'armature en PRV within the Tai Po Kau Tide Gauge Station project encompassed both straight and bend bars, catering to the diverse structural requirements of the public pier. Dextra’s expertise in custom fabrication ensured precise bending and shaping of the rebar to fit the intricate geometries of the pier structure, facilitating seamless integration and minimizing construction complexities.

Étiquette : hongkong