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Mammoet uses LR1750 crane to erect new Dubai Mall extension bridge

Mammoet’s LR1750 crawler crane was the only available crane in the UAE that complied with all technical requirements. It installed the girders, weighing between 83,000kg and 172,000kg, in two sections

Steel girders being lifted into place
Steel girders being lifted into place

Mammoet was contracted by Eversendai to assist in the erection of the fountain view link bridge at the Dubai Mall extension site by lifting and installing 16 steel girders to form its base. 

The fountain view link bridge will be home to retail outlets and provide a walkway leading to further parking spaces.

The project constrains demanded a crane that had a minimal footprint and low ground bearing pressure.

Mammoet’s LR1750 crawler crane was the only available crane in the UAE that complied with all technical requirements. It installed the girders, weighing between 83,000kg and 172,000kg, in two sections.

The lifts were carried out on Sheikh Mohammed bin Rashid Boulevard, the main road that runs around Dubai Mall. With only two out of six lanes closed to minimise disruption to traffic, the crane had to manoeuver in a tight space.

There was another engineering challenge: water pipes underneath the area of operation supply Dubai Mall and the whole of Downtown Dubai.

To avoid damaging them, it was required that the crane operate within the ground bearing pressure tolerance.

Careful engineering calculations were made for the lifts to ensure that the LR1750 could lift the girders and manoeuver in to place without going over the ground bearing pressure limit.

Mammoet installed the first set of girders on the fountain view side of the road. The whole operation was then moved to the mall side of the road where the other halves of the girders were installed, ready for connection in the middle.

 

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Construction Week - Issue 754
Nov 23, 2019