Contractor fabricates huge steel reinforcement cage to be inserted prior to concreting in underground diaphragm retaining wall
Steel reinforced cages are inserted into underground diaphragm wall excavations to give strength to the concrete which will be poured into the walls. These cages are usually fabricated on site, first by tying the structure together by using wire and then by welding the cage so it can be lifted safely into position. Diaphragm walls are excavated using a Hydrofraise (or Hydromill), is a giant construction machine that can weigh up to 80 tonnes, stands around 18 metres high and is a marvel of sophisticated technology. Used to build underground concrete walls (called slurry or diaphragm walls) and using onboard computer guidance, it cuts a trench using powerful hydraulic motors and rotating teeth set on twin drums through difficult ground that - when filled with reinforced steel cages and concrete - create retaining walls under the surface. The absence of vibration and shock makes this system very suitable for use on urban sites. This excavation system makes it possible to drill piles panels or diaphragm wall elements in a very wide range of ground, from cohesionless soils to hard rock.
Size: 3310px × 3309px
Location: London, UK
Photo credit: © qaphotos.com / Alamy / Afripics
License: Licensed
Model Released: No
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