Motorway junction construction retaining wall with ...
Transcript of Motorway junction construction retaining wall with ...
www.enkasolutions.com
The E44 Motorway links Dubai to Oman passing
alongside the Dubai Creek development and the Ras
Al Khor bird sanctuary. Junction 24/25 at the edge of
the Creek and bird sanctuary was completed in 2006,
connecting to the D62 as one of a number of major
interchanges.
Challenge
The main flyover of the D62 formed part of the clover leaf
junction and was required to provide both a stable and
efficient structural solution to the elevated junction as well
as providing an aesthetic solution supporting vegetation.
The curved profile of the flyover whilst aesthetically
pleasing posed the usual problems for more rigid concrete
solutions needing curved forms and liners slowing
construction and increasing cost.
Solution
• EnkaGrid PRO reinforcement provided a stable solution
for the reinforced soil walls supporting the embankment
• EnkaGrid’s rigid polyester strips ensured low creep
elongation and good interlock with the sand fill
• Versa-Lok modular blockwork provided an easy solution
to the curved face finish
• Sandstone coloured split face blocks blended
seamlessly with the environment
• 4 tiered construction allowed for mid tier planting bays to
further blend the finished junction into the environment.
Benefits of the solution
Reinforced soils are internally stabilised relying on the self
weight of the fill material to generate tensile forces in the
reinforcement which resist the lateral movement of the
soil. This enables construction with site won fill materials
and with need for minimal facing which can be easily
achieved with light weight modular blocks removing the
need for on site concrete casting.
Project owner Dubai RTA
Product
EnkaGrid® PRO geogrids
Function
Reinforcement
Volume
8 000 sqm
GPS coordinates
N 25 18 47, E 55 37 11
Motorway junction construction retaining wall with EnkaGrid® PRO
Ras Al Khor - Dubai - United Arab Emirates
China +86 519 6858 5555
France +33 1 74 90 00 13
Germany +49 6022 812020
Hungary +36 23 610 870
Netherlands +31 85 744 1300
USA +1 800 365 7391
Disclaimer
The information set forth in this brochure reflects our best knowledge at the time of publication. We have a policy of continuous
development and therefore our products, information and specifications may be subject to change. We therefore advise you to
contact us to make sure the information you receive is accurate and actual. We do not accept any liability arising from the
application of these products, the results thereof or the information given in this document. © 2018 Low & Bonar
www.enkasolutions.com | [email protected]
Reinforced soil walls can be built within their own footprint
with no need for external props or falsework making it
possible to construct with minimum disruption to traffic on
adjacent roads and allowing sites to progress more
quickly.
Installation benefits
The modular blocks are unreinforced dry pressed concrete
whilst the reinforcing grids are polymeric so no special
needs such as sealing on the back of concrete walls or
panels are required to resist corrosion even in saline and
chloride rich soil environments. The modular nature of the
blocks facilitates smooth curves and berms in the
construction without the need for special untis or forms
and enables rapid construction rates as no mortar is
required.
Result
The combination of modular blocks and tiered planting
bays adjacent to EnkaGrid reinforced soil produces a rich
aesthetically pleasing solution to an engineering problem.
Versa-Lok modular blocks are easily placed by hand and are dry laid enabling rapid rates of construction
Products used
EnkaGrid PRO 60 EnkaGrid PRO is a uniaxial high strength laser-welded geogrid for reinforcement
Split faced sandstone finish to blocks gives a warm natural aesthetic
The modular units cope well with even tight radius curves with no need for special units
Frictional connection with the EnkaGrid PRO reinforcement and block facing
Planting bays blend the finished walls in with the landscaped surroundings