Project: New Perth Stadium Station
Site: Burswood, Perth
Client: Prism Alliance ( Laing O’Rourke, Aecom, Perth Transport Authority)

In 2018, the multi-purpose 60,000 seat new Perth Stadium will open for the kick-off of the AFL season.

To ensure the safe and efficient movement of the crowd within an hour of an event finishing, the new six-platform Stadium Station will be one of the new infrastructure as a part of the transport strategy. Indeed, 28,000 people are expected to leave from the new Perth Stadium Station.

Geomotion has recently completed the installation of eight Vibrating Wire Piezometers, six 4-20mA pressure transducers, seven MEMS tiltmeters, three Settlement Plates and two inclinometers as part of the Perth Stadium Station Project which will be finalised in advance of the  2018 AFL season.

The equipment is used to monitor the pore water pressure, the piezometric head of ground water during dewatering, the tilt of the Victoria Park Bridge and the settlement of surcharge.

Considering the scale of the project and the distances between the sensors installed, it made sense to use the LS-G6 long range wireless telemetry system by its cost effectiveness and long range performance. The gateway receives the data from all the sensors installed onsite with a distance of 3.5 Kilometers form the furthest monitoring point then relays data to our web-based data presentation package, ARGUS.

Using this system, the client can receive the data in real time and be warned via SMS / Email if any instrument exceeds the set alarm thresholds.

​The Swan River Pedestrian Bridge forms part of the new Perth Stadium’s integrated transport strategy designed to move patrons safely and efficiently to and from the Stadium and Sports Precinct.

More than 14,000 people are expected to use the Bridge on event days to move between East Perth's Nelson Avenue and the Burswood Peninsula, adjacent to the Stadium. 

Spanning 370 meters across the Swan River the Bridge will be available for community use at all times, showcasing the beauty of the river, adjacent parklands and the Stadium Precinct.

Bridge construction works are underway with the construction of two temporary causeways in the Swan River commencing in January 2016. Bridge foundations are expected to be completed by mid-2016 with the Bridge opening in early 2017.

The following indicative monitoring installations have been installed by Geomotion to assess the settlement/movement of the causeways during the construction period:

• Downhole inclinometers are installed at two locations on each causeway to monitor lateral movement. Inclinometers are located adjacent to Piers 2 and 3 and positioned between the edge of the causeways and the pier.
• Multi-level vibrating wire piezometers (VWPs) at one location on each causeway located at the mid-height and base of the Swan River Alluvium (SRA) to monitor pore pressures. VWPs will be located between the pile caps on Piers 2 and 3 respectively. Each vibrating wire piezometer is connected to a standalone data logger allowing for automatic data retrieval.
• Settlement plates located at not less than eight locations across each of the causeways to monitor vertical settlement (i.e. 16 locations total). Two settlement plates are located at the end of each causeway with the remaining six settlement plates positioned at approximately 25m to 30m spacing (along and across the axis of the causeway).

The monitoring of settlements during construction will collect sufficient information to assess the relationship between settlement, time, SRA thickness and fill thickness and ensure adequate measures are put in place to maintain the design elevation.