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分类： 项目

第二届胡志明市环境卫生

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第二届胡志明市环境卫生

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 has been involved in the construction of the large underground system by supplying 40 Soft-Eyes to assist in the tunnel breakthroughs.

The cuttable Glass Fiber Reinforced Polymer (玻璃纤维增强聚合物) Soft-Eyes were applied to reinforce 21 shafts, allowing penetration by the Tunnel Boring Machine (TBM) without the need to remove steel 钢筋/增强筋 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

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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.

Mexico – Toluca Inter-city train (Tren Interurbano México – Toluca)

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Mexico – Toluca Inter-city train (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.

Cairo Metro – Line 3

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Cairo Metro – Line 3

Since the first 29km segment of the Metro Line 1 opened in 1987, the Cairo Metro project has revolutionized the transit system in the capital.
Currently the whole network comprises 3 operational lines numbered from 1 to 3. Line 3 consists of four phases, and the first segment started operation in 2012.

Three new metro stations were opened as part of the fourth phase of the third line on June 15, 2019, a week before the kickoff of the 2019 African Cup of Nations (AFCON) in Cairo.

Dextra has continuously provided construction solutions since the operation of Line 2 in 2000, delivering since then more than:

-1,400,000 rebar couplers

-7,000 sonic tubes

-60 soft-eyes

Bartec rebar couplers are used for rebar reinforcement of tunnel and station structures on both underground and elevated metro lines as a way to reduce steel congestion and improve tensile connection.

Moreover, the integrity test of the metro foundations using the Cross Sonic Logging (CSL) testing method was facilitated by the usage of SONITEC sonic tubes, designed for easy assembly and installation in reinforcement cages.

Dextra’s ASTEC soft-eyes are made of GFRP rebar to reinforce D-Walls in underground tunnels, which can easily be cut by Tunnel Boring Machine (TBM), resulting in time and money savings.

The project is still ongoing and the fourth line of the Cairo Metro is expected to start operation in 2020.

那格浦尔地铁，零英里地铁站

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那格浦尔地铁，零英里地铁站

那格浦尔地铁零英里站位于马哈拉施特拉邦那格浦尔市的一个混合用途交通/停车/商业项目中。它位于从北到南穿越城市的新地铁线上。零英里站是一个地铁站，由一栋 12 层建筑组成，将设有商业区和可容纳 430 辆车的停车场。

对于该项目，Dextra 于 2017 年参与了地锚的供应和安装，以稳定挖掘区域周围的地面。

Dextra 提供了其创新的 ASTEC (FRP) 主动锚解决方案（AAA），一种特殊类型的地锚，在临时应用的情况下，可以在项目结束后留在地下，即使这些地锚超出了地界线或穿过未来的隧道。

事实上，FRP 锚杆的一个主要优点是使锚杆完全可以通过传统的挖掘设备切割，使其成为传统可移动锚杆的最佳替代品，传统可移动锚杆是最终需要用蛮力从地面移除的钢锚杆。的项目。

Dextra ASTEC 主动锚便于运输，可以由工人搬运到最终位置。一旦插入钻孔，每个锚栓都会被灌浆，然后使用连接到 FRP 锚栓的传统 PT 钢绞线施加应力。安装后，锚固件可以保留在地下，这与传统的可拆卸锚固件不同，传统的可拆卸锚固件需要额外的项目管理并产生报废锚固件拆除成本。

有关印度 Dextra 锚固解决方案的更多信息，请联系我们 孟买办事处.

Grand Paris Express – Line 15

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Grand Paris Express – Line 15

这 巴黎大快车 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.

右旋糖苷 was involved at that stage by providing 100,000 福泰克 rebar couplers to connect the columns of the stations’ structure.

Additionally, Dextra supplied 15,000 meters of 索尼泰克 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.

深隧道污水处理系统 (DTSS) – 第 2 阶段

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深隧道污水处理系统 (DTSS) – 第 2 阶段

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 GFRP 软眼 for TBM breakthrough.

Soft Eye & Rock Bolt

第二阶段预计于 2022 年完成后，大士水处理厂的 NEWater 工厂将满足新加坡总用水需求 55%。

此外，Tuas WRP 每天将处理 800,000 立方米的废水，使其成为世界上最大的膜生物反应器设施。

胡志明市地铁 – 1 号线（胡志明市地铁，越南）

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胡志明市地铁 – 1 号线（胡志明市地铁，越南）

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).

建成后，公共交通系统将通过6条地铁线路覆盖胡志明市地区，让居民和游客在城市各处轻松便捷地通勤，从而提高城市生活质量。

该项目第一阶段包括建设一条全长19.7公里的铁路线，连接滨城市场和Suoi Tien公园。还包括建设全长17.1公里的高架铁路，设11座车站，以及建设2.6公里的地下铁路，设3座车站。

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

只需将紧凑型锚板拧到钢筋末端即可完成安装。该解决方案最终简化了流程，从而提高了混凝土质量。

特拉维夫红线，该市第一条轻轨系统

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特拉维夫红线，该市第一条轻轨系统

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 地下连续墙 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 桩 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.

双溪毛糯-沙登-布城 (SSP) 地铁线

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双溪毛糯-沙登-布城 (SSP) 地铁线

The Malaysian SSP Line is the second line of Klang Valley’s MRT System. The main purpose of this project is to provide a better railway infrastructure and transport system in order to serve Malaysia’s growing population.

Commuting through the heart of the Capital

The Malaysian SSP Line will connect Sungai Buloh to Putrajaya, running through the center of Kuala Lumpur and its suburbs. With its 35 stations, among which 11 will be providing connections to other lines, the SSP Line will allow commuters to transfer with ease to and from existing and planned rail lines.
The rail transit system involves the construction of more than 52 km: 13.5km of underground line and a 38.7km of elevated rail. Once operational, it is expected to have a ridership of 529,000 passengers per day.

Rebar couplers for D-wall and slab

For this large metro project, the contractor joint venture MMC-Gamuda has chosen Dextra’s popular rebar reinforcement solution 巴特克, supported by 3 sets of bar-end high-productivity equipment. Approximatively 200,000 pieces have been delivered as of April 2018.
右旋糖苷 巴特克 have been used for productivity reasons. Couplers were embedded in the diaphragm walls surrounding the underground stations, providing horizontal connection points at a later stage of the project. After excavation, couplers are used to connect bars and start the station’s slabs.

For more information about our solutions in Malaysia, please contact Dextra’s Kuala Lumpur office.