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

Publié sur septembre 11, 2024septembre 11, 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 over 60,000 Fortec+ couplers. 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, and Dextra’s Fortec+ couplers contributed significantly to the project’s structural integrity and long-term performance. The couplers were used to connect rebars in various locations, such as precast panels, tunnel access points, and driveways.

Fortec+ is a system that includes an additional rebar preparation process, in which the threaded bar end is proof tested by applying a tensile load. This is a non-destructive test, as the load level remains within the elastic zone of the reinforcing bar.

Image credit: Central Kowloon Route – Highways Department

New Pattullo Bridge, Canada

Publié sur septembre 4, 2024septembre 4, 2024 par Kansuda Visesthanakorn

New Pattullo Bridge, Canada

Dextra has proudly contributed to the construction of the new Pattullo Bridge in Canada, a vital infrastructure project that will enhance connectivity between Surrey and New Westminster. As part of this ambitious endeavor, Dextra supplied 100,000 Bartec couplers, ensuring robust and reliable rebar connections from the bridge’s foundations to its towering pylons.

Le Bartec couplers, known for their high performance and ease of installation, were integral in providing the necessary strength and durability required for this long-term infrastructure. Dextra’s involvement in the Pattullo Bridge project underscores the company’s commitment to delivering innovative solutions that support large-scale construction efforts worldwide. As the new bridge takes shape, it stands as a testament to the importance of reliable engineering components in building the infrastructure of tomorrow.

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.

Cairo Monorail Bowstring Bridge, Egypt

Publié sur juillet 5, 2024juillet 5, 2024 par Kansuda Visesthanakorn

Cairo Monorail Bowstring Bridge, Egypt

The Cairo Monorail Bowstring Bridge project, a pivotal part of Egypt’s expanding urban infrastructure, has significantly benefited from the expertise and quality products supplied by Dextra. Known for their innovative engineering solutions, Dextra provided critical materials to support the construction of this state-of-the-art transportation link.

In particular, Dextra supplied tension rods in two distinct specifications for the project:

M78/OD75 in Grade CS520 – A total of 60 sets were delivered.
M83/OD80 in Grade CS520 – An additional 8 sets were provided.

These tension rods were specifically used as hangers for the bowstring bridge, ensuring a high level of strength and durability, which is crucial for the safety and longevity of the bridge, to maintain structural integrity and withstand the stresses of daily monorail operations.

Dextra’s tension rods, known for their high tensile strength and resistance to environmental factors while providing architectural pleasure, played a critical role in meeting these demands. This involvement underscores the importance of reliable and advanced engineering solutions in modern infrastructure projects, highlighting Dextra’s commitment to excellence and innovation in the field of civil engineering.

A66 Salzbachtal Bridge, Germany

Publié sur juin 12, 2024juin 12, 2024 par Kansuda Visesthanakorn

A66 Salzbachtal Bridge, Germany

The A66 Salzbachtal Bridge, located in Wiesbaden, Hesse, is a 304-meter-long, four-lane motorway bridge on the A66. Originally constructed in the mid-20th century, the bridge has been subject to wear and tear due to increasing traffic loads and aging infrastructure.

Foundation piles are fundamental to the stability and longevity of bridge structures. Ensuring their integrity is crucial to preventing potential structural failures. Création played a pivotal role by supplying approximately 10,000 linear meters of Sonitec CSL (Cross Sonic Logging) tubes.

Sonic tubes are essential components in the CSL testing method, which is widely regarded as one of the most reliable techniques for assessing deep foundation integrity. Sonitec, designed for easy installation within the reinforcement cage, facilitates accurate cross-hole sonic logging, allowing engineers to precisely detect and locate defects within the piles.

(Image credit: PORR Deutschland, Wilhelm Schütz)

Cross Island Line (CRL) MRT, Singapore

Publié sur juin 12, 2024juillet 19, 2024 par Kansuda Visesthanakorn

Cross Island Line (CRL) MRT, Singapore

Création has played a pivotal role in the construction of Singapore’s Cross Island Line (CRL) MRT project, supplying Glass Fiber Reinforced Polymer (GFRP) soft-eyes, Bartec couplers and Barres à tête for several crucial packages. Création continues to support the ongoing packages of this extensive project.

The CRL is set to become Singapore’s eighth MRT line and its longest fully underground line, stretching over 50 kilometers. The project is being executed in three phases, with the first phase anticipated to be operational by 2030.

To minimize the environmental impact on the forested areas of the nature reserve, engineering solutions were meticulously chosen to further mitigate environmental disruption. These solutions include digging deeper into the ground and employing a large diameter boring machine, capable of accommodating two train tracks within a single tunnel. This approach not only reduces the surface footprint but also enhances the efficiency of the tunneling process.

Tunnel Boring Machines (TBMs) are a staple in Singapore’s subterranean infrastructure projects, adept at operating under a variety of ground conditions. The use of GFRP soft-eyes supplied by Création is integral to these operations. Soft-eyes are essential components in TBM tunneling, acting as temporary openings that allow the TBM to break through concrete walls without compromising structural integrity. The GFRP material is preferred for its high strength-to-weight ratio, corrosion resistance, and ease of installation, ensuring safe and efficient tunneling operations.

Création‘s expertise and reliable supply of GFRP soft-eyes, Bartec couplers and headed bars have significantly contributed to the progress of the CRL project, aligning with Singapore’s commitment to sustainable and innovative infrastructure development. As the CRL project advances, Création remains a key partner, supporting the construction of this monumental MRT line that will eventually enhance the daily commute for millions of Singaporeans.

Reconstruction de la station marégraphique Tai Po Kau, Hong Kong

Publié sur avril 2, 2024avril 23, 2024 par Kansuda Visesthanakorn

Reconstruction de la station marégraphique Tai Po Kau, 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 Barre d'armature en polymère renforcé de fibre de verre (GFRP) pour la fondation du quai du ferry, 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 Le projet de station de jaugeage de marée Tai Po Kau comprenait à la fois des barres droites et courbées, répondant aux diverses exigences structurelles du quai du ferry. L'expertise de Dextra en matière de fabrication sur mesure a assuré un cintrage et un façonnage précis des barres d'armature pour s'adapter aux géométries complexes de la structure des piles, facilitant ainsi une intégration transparente et minimisant les complexités de construction.

Laem Chabang

Publié sur novembre 6, 2022mars 15, 2024 par Sir Gwi

Laem Chabang

Le port de Laem Chabang, sur le golfe de Thaïlande, est le port le plus grand et le plus fréquenté de Thaïlande, devant celui de Bangkok, et le 4ème port le plus fréquenté d'Asie du Sud-Est. Il est situé dans l'usine d'essai de Chonburi, à quelques heures de route de Bangkok et du principal site de production de Dextra.

Dextra a été impliqué avec l'entrepreneur italo-thaïlandais pour l'ingénierie et la fourniture des structures en acier derrière la nouvelle jetée de Laem Chabang.

Dextra a conçu et fourni ses systèmes de tirants marins en grade 700, le plus élevé de notre gamme.

Les nuances supérieures offrent un rapport performance/acier amélioré par rapport aux nuances 355/510 et 500/660, permettant de sélectionner des barres de plus petit diamètre, ce qui permet finalement de réaliser des économies d'acier et de faciliter les efforts de logistique et d'installation.

Les tiges constituant les longs tendons étaient ancrées dans des pieux en béton et raccordées à l'aide de tendeurs et de coupleurs.

Au total, 206 tonnes de tirants marins ont été fournies pour ce projet d'agrandissement de Laem Chabang.

Moubarak Al-Kabir

Publié sur novembre 6, 2022mars 14, 2024 par Sir Gwi

Moubarak Al-Kabir

Moubarak Al-Kabeer est un grand port maritime, situé sur l'île de Bubiyan, à l'est du Koweït, ouvert sur le golfe Persique.

Dextra a participé à l'étape 2 de la première phase de construction, entre 2011 et 2012, en collaboration avec Hyundai E&C, l'entrepreneur de ce projet.

Pour ce grand projet, Dextra a fourni des tirants marins pour ancrer le quai de l'installation de déchargement.

Le système fourni bénéficiait de tirants Dextra de grand diamètre M134, ancrés dans les combiwalls grâce à des cages à billes (capacité de rotation de ± 10° dans toutes les directions) et des écrous captifs (capacité de rotation de ± 5° dans toutes les directions).

Pour s'adapter aux longs tendons, fournir une longueur de réglage et offrir une flexibilité supplémentaire lors de l'installation, des tendeurs et des coupleurs de charnière (réglage vertical de ± 90°) ont également été ajoutés en ligne si nécessaire.

Terminal international à conteneurs de Manille (MICT) – Quai 7

Publié sur novembre 6, 2022mars 15, 2024 par Sir Gwi

Terminal international à conteneurs de Manille (MICT) – Quai 7

En 1988, International Container Terminal Services, Inc. (ICTSI) a remporté la concession de 25+25 ans pour exploiter le Manila International Container Terminal (MICT), l'un des trois terminaux du port de Manille.

Depuis lors, MICT a quintuplé sa capacité annuelle, devenant ainsi le terminal à conteneurs le plus grand et le plus moderne des Philippines.

Il est désormais considéré à égalité avec les meilleurs terminaux au monde avec ses efficacités garanties et ses systèmes opérationnels et administratifs modernisés.

MICT Berth 7 est le projet d'agrandissement du quai 6 existant qui contribuera à réduire la congestion dans les parcs à conteneurs hors quai.

Dextra a été impliqué dans le projet en fournissant 110 jeux de barres de liaison marines, grade 700, diamètre de barre 85 mm, comme ancrage pour attacher le mur principal en béton coulé au-dessus de pieux tubulaires en acier à un mur d'ancrage de palplanches relié à une poutre de rail de grue.

Dextra propose sa solution de barres de liaison marines en 3 qualités d'acier, jusqu'à une limite d'élasticité de 700 Mpa et 22 diamètres de filetage, permettant une correspondance étroite avec les exigences de performance et une utilisation économique du matériau.

Catégorie : Transport