Sarens transports, installs tunnel portals in Australia

Sarens transports, installs tunnel portals in Australia

Sarens has been contracted by CPB & John Holland joint venture to maneuver and install two tunnel portals in Melbourne, Victoria.

The team had installed the challenging Darlington Flyover using Accelerated Bridge Construction (ABC) in 2017. At the time moves of this size were unheard of in Australia, Sarens stressed in its statement.

Based on its previous experiences, CPB & John Holland JV hired Sarens to transport and install two concrete tunnel portals for the West Gate tunnel project in Melbourne, Victoria.

WGTP is currently the largest government project in Australia. It aims to improve the accessibility and reduce the traffic congestion in and around Melbourne.

The team had to jack up the concrete portals, weighing 600T each, load them on the SPMTs, drive them to the installation site, and finally jack down and install the portals.

Sarens deployed 36 axle-lines of SPMTs, SARLIFT and PJ250.

In a confined space, the crew assembled the equipment. Four PJ250 pre-jacked the portals on the 2×18 axles SPMTs and relocated them under the SARLIFT. The SARLIFT jacked the portals around 7m high.

The reconfigured 3×12 axles SPMTs with four PJ250 and supporting modular beam on the deck were re-positioned under the SARLIFT and the portals were transferred onto this assembly of equipment and finally driven to the installation site and installed.

Author: Adnan Bajic

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