Dextra-Gruppe | Zuverlässige Verbindungen

2. HCMC-Umwelthygiene

2. HCMC-Umwelthygiene

The Second Ho Chi Minh City Environmental Sanitation Project consists of the construction of an interceptor that will convey the wastewater collected from the Nhiêu Lộc-Thị Nghè Canal and District 2 areas of Ho Chi Minh City to a treatment plant.

Dextra war am Bau des großen unterirdischen Systems beteiligt, indem es 40 Soft-Eyes zur Unterstützung bei den Tunneldurchbrüchen lieferte.

The cuttable Glass Fiber Reinforced Polymer (GFK) Soft-Eyes were applied to reinforce 21 shafts, allowing penetration by the Tunnel Boring Machine (TBM) without the need to remove steel Bewehrung and without the risk of damaging the TBM’s head.

With its completion planned for 2022, wastewater services in HCMC will become considerably more sustainable and will be remembered as the first major step toward alleviating the environmental and sanitation issues of the country.

Doha Metro Rail – Phase 1

Doha Metro Rail – Phase 1

Doha Metro Phase 1 is Qatar’s major infrastructure project consisting of three metro lines with a total length of 164 km. The first phase involves the construction of the Red, Green, and Gold lines and their major stations. It is part of the US$36 billion Doha Metro Rail Network Project, aiming to reduce the city’s road traffic congestion while facilitating the connection between Qatar and other Gulf countries.

The required completion period for this project is extremely short, with excavation starting in mid-2013 and operations expected by 2019. Given the project’s constrained timeline, highly innovative solutions are required to complete the building of underground structures in minimal time.

Dextra’s FRP Active Anchors as Temporary Tie-backs in Retaining Walls

Composite materials have been used for over 20 years as temporary reinforcement in concrete structures. In Doha Metro Phase 1, both Dextra’s post-tensioned carbon-FRP (CFRP) Active Anchors and glass-FRP (GFRP) Active Anchors have been used in retaining walls.

When used as temporary tie-backs, CFRP material offers the most advanced technical solution due to its superior tensile strength, creep resistance, and durability, while GFRP Anchors offer a cost-effective solution without technical compromise.

GFRP anchors can advantageously replace steel removable anchors to prevent encroachment on neighboring plots. As a result, GFRP anchors now account for more than 90% of the FRP anchors installed in the region.

For the first phase of the Doha Metro Rail Network project, Dextra has supplied 150 CFRP Active Anchors and 700 GFRP Active Anchors to date.

ASTEC Soft-Eye for Improved TBM Penetration

Dextra’s ASTEC Soft-Eyes is a unique technology using cuttable GFRP reinforcement as a replacement for conventional steel rebars. Since 1996, this solution has become a standard concept in the design of shafts and subway stations.

More than 10 sets of Dextra’s ASTEC Soft-Eyes had been supplied and used in the Doha Metro construction project as of May 2018.

Intercity-Zug Mexiko – Toluca (Tren Interurbano México – Toluca)

Intercity-Zug Mexiko – Toluca (Tren Interurbano México – Toluca)

o reduce traffic congestion on the Mexico–Toluca highway, as well as to ease connections between both cities, the Secretariat of Communications and Transportation (SCT) is constructing a new 55.7-kilometer rail line in the Mexico City area. Aiming to be an environmentally friendly project, the commuter rail line includes a 4.7-kilometer double-tube tunnel in highly complex terrain and protected natural areas.

The new train will connect Toluca Valley to Mexico City and will provide service to an estimated 270,000 commuters. The line includes six stations: two terminals (Zinacantepec and Observatorio) and four intermediate stations (Cristobal Colon, Metepec, Lerma, and Santa Fe). It will also serve as a backbone for regional and urban transport in the Mexico City area.

Construction began in 2015, and the railway was scheduled for completion in 2019.

Light and Productive Rebar Coupler Solution for the Construction Project

For the reinforcement of the railway’s concrete structures, Dextra supplied more than 100,000 Rolltec splices. The system is a practical and economical alternative to laps. Rolltec is also supported by a single rebar preparation machine, and only one operator is needed to run the machine.

In addition, thanks to the performance of our machines, the thread is prepared in less than 30 seconds!

Moreover, with the Rolltec system, the same type of coupler can be used for both standard and position applications, resulting in optimized project inventory.

For more information about our projects in Latin America, please contact our Panama office.

Metro Kairo – Linie 3

Metro Kairo – Linie 3

Seit der Eröffnung des ersten 29 km langen Abschnitts der U-Bahn-Linie 1 im Jahr 1987 hat das U-Bahn-Projekt Kairo das Verkehrssystem der Hauptstadt revolutioniert.
Derzeit umfasst das gesamte Netzwerk drei Betriebslinien, die von 1 bis 3 nummeriert sind. Linie 3 besteht aus vier Phasen, und das erste Segment wurde 2012 in Betrieb genommen.

Am 15. Juni 2019, eine Woche vor dem Start des Afrikanischen Nationen-Pokals 2019 (AFCON) in Kairo, wurden im Rahmen der vierten Phase der dritten Linie drei neue U-Bahn-Stationen eröffnet.

Dextra hat seit dem Betrieb der Linie 2 im Jahr 2000 kontinuierlich Baulösungen bereitgestellt und seitdem mehr als Folgendes geliefert:

-1.400.000 Bewehrungskupplungen

-7.000 Schallröhren

-60 weiche Augen

Bartec-Bewehrungskupplungen werden zur Bewehrungsverstärkung von Tunnel- und Bahnhofskonstruktionen sowohl auf U-Bahn- als auch auf Hochbahnstrecken eingesetzt, um den Stahlstau zu reduzieren und die Zugverbindung zu verbessern.

Darüber hinaus wurde die Integritätsprüfung der Metrofundamente mithilfe der Testmethode Cross Sonic Logging (CSL) durch den Einsatz von SONITEC-Schallrohren erleichtert, die für eine einfache Montage und Installation in Bewehrungskörben ausgelegt sind.

Die ASTEC-Soft-Eyes von Dextra bestehen aus GFK-Bewehrungsstäben zur Verstärkung von D-Wänden in unterirdischen Tunneln, die problemlos mit einer Tunnelbohrmaschine (TBM) geschnitten werden können, was zu Zeit- und Geldeinsparungen führt.

Das Projekt ist noch im Gange und die vierte Linie der Kairoer Metro soll 2020 ihren Betrieb aufnehmen.

U-Bahn Nagpur, U-Bahn-Station Zero Mile

U-Bahn Nagpur, U-Bahn-Station Zero Mile

Nagpur Metro Zero Mile Station in einem gemischt genutzten Transport-, Park- und Gewerbeprojekt in der Stadt Nagpur im Bundesstaat Maharashtra. Es liegt an der neuen U-Bahnlinie, die die Stadt von Norden nach Süden durchquert. Die Zero Mile Station ist eine U-Bahn-Station, die zu einem 12-stöckigen Gebäude zusammengefasst ist und Gewerbeflächen sowie einen Parkplatz mit einer Kapazität von 430 Fahrzeugen beherbergen wird.

Bei diesem Projekt war Dextra im Jahr 2017 an der Lieferung und Installation von Bodenankern zur Stabilisierung des Bodens rund um das Ausgrabungsgebiet beteiligt.

Dextra lieferte seine innovative ASTEC (FRP) Active Anchors-Lösung (AAA), eine spezielle Art von Erdankern, die bei temporären Anwendungen nach Projektende im Boden belassen werden können, auch wenn sie über die Grundstücksgrenze hinausreichen oder auf künftige Tunnel stoßen.

Tatsächlich besteht einer der Hauptvorteile der FRP-Ankerstange darin, dass der Anker mit herkömmlicher Aushubausrüstung vollständig zerschnitten werden kann, was ihn zum besten Ersatz für herkömmliche abnehmbare Anker macht, bei denen es sich um Stahlanker handelt, die am Ende mit roher Gewalt aus dem Boden entfernt werden müssen des Projekts.

Dextra ASTEC Aktivanker sind leicht zu transportieren und können von Arbeitern an ihren endgültigen Standort getragen werden. Nach dem Einsetzen in das Bohrloch wird jeder Anker verpresst und später mithilfe herkömmlicher PT-Litzen, die mit dem FRP-Anker verbunden sind, vorgespannt. Nach der Installation kann der Anker im Boden verbleiben, im Gegensatz zu herkömmlichen abnehmbaren Ankern, die zusätzliches Projektmanagement erfordern und Kosten für die Entfernung des Ankers am Ende seiner Lebensdauer verursachen.

Für weitere Informationen zu Dextra-Verankerungslösungen in Indien wenden Sie sich bitte an unser Büro in Mumbai.

Metro Ho-Chi-Minh-Stadt – Linie 1 (HCMC Metro, Vietnam)

Metro Ho-Chi-Minh-Stadt – Linie 1 (HCMC Metro, Vietnam)

Ho Chi Minh City Metro – Line 1 is the first part of the megacity’s 109-kilometer rail line project undertaken by the Management Authority for Urban Railways (MAUR).

Sobald das Nahverkehrssystem erreicht ist, wird es die HCMC-Gebiete mit sechs U-Bahn-Linien abdecken, sodass Einwohner und Touristen einfach und bequem durch die Stadt pendeln können, was zu einer besseren städtischen Lebensqualität führt.

Die erste Phase des Projekts besteht im Bau einer 19,7 Kilometer langen Eisenbahnlinie, die den Ben-Thanh-Markt und den Suoi-Tien-Park verbindet. Dazu gehört auch der Bau einer 17,1 Kilometer langen Hochbahn mit 11 Stationen und einer 2,6 Kilometer langen U-Bahn-Linie mit 3 Stationen.

For the construction of Vietnam’s biggest city, Dextra has been supplying both concrete reinforcement Und bar system solutions.
To reduce steel congestion in heavily reinforced areas, the contractor Shimizu-Maeda Joint Operation opted for Dextra’s end anchors. Endanker is a simple alternative to rebar hooks.

Die Montage erfolgt durch ledigliches Aufschrauben der Kompaktankerplatte auf das Ende des Bewehrungsstabes. Letztendlich erleichtert die Lösung den Prozess und führt zu einer besseren Betonierqualität.

Grand Paris Express – Line 15

Grand Paris Express – Line 15

Der Grand Paris Express 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.

These 4 new lines will circle the capital and link to 3 airports and many business districts. It will transport 2 million commuters a day. The lines are planned to open in stages, with the full completion of the project scheduled for 2030.

The construction of line 15 started in 2015, with its first section between Pont de Sèvres Métro station and Noisy – Champs RER A station.

Die Anfänge 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.

The first section of line 15 is scheduled to open in 2020.

Tieftunnel-Abwassersystem (DTSS) – Phase 2

Tieftunnel-Abwassersystem (DTSS) – Phase 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 Weiche Augen aus GFK for TBM breakthrough.

Soft Eye & Rock Bolt

Nach Abschluss von Phase 2, voraussichtlich im Jahr 2022, wird die NEWater-Fabrik im Tuas WRP 551 TP3T des gesamten Wasserbedarfs Singapurs ausmachen.

Darüber hinaus wird das Tuas WRP 800.000 Kubikmeter verbrauchtes Wasser pro Tag aufbereiten und ist damit die größte Membranbioreaktoranlage der Welt.

Ahmedabad Gandhinagar metro line India – Phase I

Ahmedabad Gandhinagar metro line India – Phase 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.

Steel sonic logging tubes for concrete integrity tests

For the first phase of the Ahmedabad metro, Die Anfänge 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.

Rote Linie von Tel Aviv, das erste Stadtbahnsystem der Stadt

Rote Linie von Tel Aviv, das erste Stadtbahnsystem der Stadt

The Red Line is the first section of the new Light Rail system currently in development in Tel Aviv, Israel. The line will run from Bat Yam in the southwest to Petah Tikva in the northeast.

The total projected length of the line is 24km, comprising 34 stations, 10 of which are underground, including an interchange with Israel Railways services.

For this project, Dextra is currently supplying products for the construction of six of the underground stations including Bialik, Abba Hillel, Arlozorov, Shaul HaMelech, Yehudit and Allenby.

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

Dextra also provided 50,000m of Sonitec ST50 to facilitate the testing of the structural integrity of foundation piles using the CSL (Crosshole Sonic Logging) method.
Sonitec is an easy-to-assemble and time-saving sonic tube solution, preferred among Pfahlkonstruktion and general contractors worldwide for more than 20 years.

The line is currently scheduled for completion in October 2021, making it the second underground service operating in Israel.