DLT Engineering
Reference Project
Reference Project
Construction Equipment
Construction Engineering
Site Services
Construction Engineering
Site Services
Riyadh Metro project - Line 4 bridge deck erection equipment
In 2014-15 DLT were sub-contractors to FAST Consortium for design and supply of 2 No DL-SE500/35 bridge span erectors (also known as a launching gantry or launching girder), 2 No DL-TLC500 transporters, 2 No DL-SC260/21.2/25 straddle carriers and a multi-span sideways skidding system for the transport and final erection of 500 tonne 35m long precast concrete bridge deck beams on the 16.7km long elevated section of line 4 of the Riyadh Metro project. The equipment was designed to deliver and erect the bridge beams at an average rate of 1 per day, to erect bridge beams on a plan radius of 1200 m and to pass through cast in-situ sections with a plan radius of 100 m. To deliver over 100m plan radius it was necessary to design the transporter with a quick release central spine beam joint so the it can work as two independently steering halves when passing over sections with small plan radii and work as a single unit when delivering the bridge beams into the back of the span erector.
DL-SC260 straddle carriers transporting and erecting a 500 tonne precast bridge beam .
Span erector and sideways skidding system .
Span erector and transporter working together during girder erection .
Span erector in August 2015 .
Erection of first span on site, May 2015 .
DL-SE500/35 during trial assembly and function testing in the factory before shipping to site.
DL-SC260 straddle carriers and DL-TLC500 transporter during trial assembly and function testing in the factory.
DL-TLC500 transporter during full load function testing in the factory before shipping to site.
DL-TLC500 transporter during full load function testing on a 100m plan radius S-curve in the factory before shipping to site.
2 No DL-SC260/21.2/25 straddle carriers, each with a lifting capacity of 260 tonnes, a wheel base of 21.2m and a lift height of 25 m .
DL-SE500 span erector and DL-TLC500 transporter.