Dorman Long Technology
Reference Project
Construction Equipment
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 ...... Riyadh Metro bridge span erector
Span erector and sideways skidding system ......
Span erector and transporter working together during girder erection ......
Span erector in August 2015 ..... Riyadh Metro bridge span erector
Erection of first span on site, May 2015 ...... Riyadh Metro bridge span erector Riyadh Metro bridge span erector
DL-SE500/35 during trial assembly and function testing in the factory before shipping to site...... Riyadh Metro bridge span erector
DL-SC260 straddle carriers and DL-TLC500 transporter during trial assembly and function testing in the factory...... Riyadh Metro straddle carrier
DL-TLC500 transporter during full load function testing in the factory before shipping to site...... Riyadh Metro Project DL-TLC500 transporter
DL-TLC500 transporter during full load function testing on a 100m plan radius S-curve in the factory before shipping to site...... Riyadh Metro Project DL-TLC500 transporter
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 ...... Riyadh Metro Project DL-SC260 straddle carrier
DL-SE500 span erector and DL-TLC500 transporter...... Riyadh Metro Project DL-SE500/35 span erector