Paving underground

A Power Curbers 5700C machine is being used underground in Turkey to slipform the U-shaped concrete platforms on the walls of a new tunnel project.
February 14, 2012 Read time: 1 min
A 307 Power Curbers 5700C machine is being used underground in Turkey to slipform the U-shaped concrete platforms on the walls of a new tunnel project. These will house electrical conduit and serve as maintenance walkways when the tunnel is in operation.

This machine is working on a railway tunnel that forms part of a new link in Turkey's commercial centre Istanbul. This link is intended to reduce chronic traffic congestion that occurs particularly at peak periods on the crowded D100 highway that runs East-West on the Asian side of the city. The machine is working around 45m underground and has been fitted with a special 4.5tonne mould designed for this job. The job is challenging in several ways and aside from having to deliver concrete through chutes placed into the tunnel every few kilometres, securing the concrete to tunnel walls that vary in diameter has presented a real challenge. The tunnel walls are wider at train stations and then become narrower again, so Power Curbers designed a mould that can be varied hydraulically in both height and width.
Concrete milling, paving & compaction Road Structures

For more information on companies in this article

Related Content

  • Solving congestion in Brisbane
    August 2, 2012
    Rapid growth in a major Australian city in recent years has created new problems for the infrastructure and especially transport Expansion in the city of Brisbane, the Queensland state capital and the third largest city in the country, is set to continue and some 1,500 people arrive/week from within Australia and from other parts of the world. At this rate by 2026 the city's population should increase by 1.4 million: at present it is 1.8 million. To cope, the Queensland government and city council have ini
    Read More
  • Forming iconic structures
    July 18, 2012
    Specially designed and constructed formwork is being used to create some iconic bridges worldwide The Golden Ears Bridge over the Fraser River will unite the municipalities of Richmond, New Westminister and Delta in the scenic British Columbia province of Canada. The bridge, part of a CAD$800 million (US$670 million) project, is an 'extra dosed' cable stayed bridge, which means the deck will be supported by both cables and the structure itself. This design reduces the overall height of the two towers as req
    Read More
  • New tunnelling machines are coming to market
    May 13, 2015
    Major gains in tunnelling productivity and performance are claimed for a series of new machines now coming to market These new tools will help contractors boost productivity and versatility in an array of applications. The new equipment items are designed for a variety of tasks, including drilling and shotcreting duties. One of the leaders in the underground equipment sector, Atlas Copco, has a new line-up of single and twin boom drill rigs, which suit duties in smaller tunnelling applications. The fi
    Read More
  • Building a major Turkish highway project
    August 15, 2018
    The North Marmara Motorway Project in Turkey has been a major focus for project financing, as well as for novel technical solutions for its construction. This mega infrastructure project is intended to boost transport connectivity between the European and Asian sides of Turkey International law firm Winston & Strawn LLP has advised on major project financing for two sections of the highway. The structure for implementation of the Project is based on the build-operate-transfer (BOT) concession model. The
    Read More

Highlighted Content