Expressway, Singapore

GEOTECHNICAL SYSTEMS

 

Project:    
MCE 485 Marina Coastal Expressway in Singapore

 

Client:     
LTA - Land Transport Authorithy

 

Construction period:    
August 2009 - December 2011

 

Construction company:
Penta Ocean Construction Co. Ltd.

 

Supplier:
VSL Singapore

 

Scope of supply:
1,300 tons post-tensioning bars SAS 950/1050 Ø 32 mm,  with couplers and fix nuts
    
 

Application:    
It is the most expensive expressway of Singapore and it is the traffic connection between the east and west part of Singapore. With five lanes for each direction, the expressway has a total length of 5 km, where of 3.5 km are realized as a tunnel. SAS piles with post-tensioning bars are used because of the existing soft soil layers (soft marine clay) up to a depth of ~57 m. SAS piles are used temporary for the negative buoyancy (tensile) and permanent as foundation piles (compression). With a total length of 70 m SAS piles are connected fast, easy and safe with couplers and fix nuts based on single bar sections with lengths of 11.8 m.

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