Perth Stadium Pedestrian Bridge, Western Australia

Swan River Pedestrian Bridge
Client: Rizzani York Joint Venture ( Rizzani de Eccher / York Civil )

System Installed:

Downhole Inclinometers
Multi-Level Vibrating Wire Piezometers
Standalone Data Loggers
Settlement Plates

The Swan River Pedestrian Bridge forms part of the 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, adjacent to Nelson Avenue and the Burswood Peninsula adjacent to the Stadium.

Overview

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 Itmsoil to assess the settlement/movement of the causeways during the construction period:

Downhole inclinometers at two locations on each causeway to monitor lateral movement. Inclinometers will be located adjacent to Piers 2 and 3 and be 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 to get data automatically.
Settlement plates located at not less than 8 locations across each of the causeways to monitor vertical settlement (i.e. 16 locations total). Two settlement plates should be 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 should aim to 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.