Soil Consolidation Marmaray City Train Station
2
www.enkasolutions.com Marmaray suburban rail is an essential project for Istanbul, connecting Europe with Asia under the Boshphorus and running in the heart of the city. It is crucial to connect the city’s metro network over two continents; in the future it will also connect the suburbs of Istanbul with the heart of the city. Challenge It is a real civil engineering challenge to shore up and stabilize weaker soils in a short time frame to allow early construction on them. Using Prefabricated Vertical Drains (PVD’s) is a cost efficient solution to reach this goal and to stabilize soft soils even in 30-40 m depths. Applying PVD’s a path is formed for excess pore-water created by the overburden. Water is drained off to the surface resulting in a stable subgrade on which construction can take place. Solution • Installing Colbonddrain CX 1000 vertical drain in a 1.2 m raster with an average depth of 15 m to speed up soil consolidation After soil measurements and investigation had been performed, the calculated 1.2 m installation raster and average 15 m installation depth delivered the calculated 0.9 m settlement in a 6 months time frame instead of years. Benefits of the solution Applying PVD’s as a solution not just allowed the contractor to dramatically reduce construction time, but also delivered significant cost savings compared to other possible civil engineering solutions for stabilizing soft soils in such depths, like piling or even replacing the complete soil. Project owner City of Istanbul Product Colbonddrain CX 1000 Function Soil Consolidation Contractor ALTERNATİF ZEMİN MEKANİĞİ Project date 2014 Volume 500 000 lm Soil Consolidation Marmaray – City Train Station Istanbul - Republic of Turkey
Transcript of Soil Consolidation Marmaray City Train Station
www.enkasolutions.com
Marmaray suburban rail is an essential project for
Istanbul, connecting Europe with Asia under the
Boshphorus and running in the heart of the city. It is
crucial to connect the city’s metro network over two
continents; in the future it will also connect the
suburbs of Istanbul with the heart of the city.
Challenge
It is a real civil engineering challenge to shore up and
stabilize weaker soils in a short time frame to allow early
construction on them. Using Prefabricated Vertical Drains
(PVD’s) is a cost efficient solution to reach this goal and to
stabilize soft soils even in 30-40 m depths.
Applying PVD’s a path is formed for excess pore-water
created by the overburden. Water is drained off to the
surface resulting in a stable subgrade on which
construction can take place.
Solution
• Installing Colbonddrain CX 1000 vertical drain in a 1.2 m
raster with an average depth of 15 m to speed up soil
consolidation
After soil measurements and investigation had been
performed, the calculated 1.2 m installation raster and
average 15 m installation depth delivered the calculated
0.9 m settlement in a 6 months time frame instead of
years.
Benefits of the solution
Applying PVD’s as a solution not just allowed the
contractor to dramatically reduce construction time, but
also delivered significant cost savings compared to other
possible civil engineering solutions for stabilizing soft soils
in such depths, like piling or even replacing the complete
soil.
Project owner
City of Istanbul
Product
Colbonddrain CX 1000
Function
Soil Consolidation
Contractor
ALTERNATİF ZEMİN MEKANİĞİ
Project date
2014
Volume
500 000 lm
Soil Consolidation Marmaray – City Train Station Istanbul - Republic of Turkey
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]
Colbonddrain with its patented core and unique production
method of thermally bonding the filter at the entire surface
makes a thoroughly tough and durable geocomposite with
excellent drainage capacities.
Colbonddrain’s high tensile strength allows faster
construction and the thermally bonded filter provides a
tear off free and thus safer installation.
Installation benefits
Colbonddrain is easy to handle with a roll length of 280 m
and is suitable for use in all soil types.
Its unique production method and its high tensile strength
allows usage with all installation rig types.
Result
Expensive and time consuming traditional methods with
intensive truck and machinery demand could be replaced
by installing Colbonddrain CX1000. A stable sub-grade
has been created for the railway superstructure in a short
time, which will serve the millions of travellers in the
upcoming decades.
Products used
Colbonddrain CX1000 Prefabricated Vertical Drain (PVD) geocomposite for soil consolidation
Colbonddrain CX1000 - at work
Installation machine installing Colbonddrain CX1000
Time benefit with Prefabricated Vertical Drain Forms path for excess pore-water created by the overburden
