Five new stations are being built by the Caulfield to Dandenong Level Crossing Removing Project in Carnegie, Hughesdale, Clayton Murrumbeena, and Noble Park. In addition, nine level crossings are being removed.
Also, the project involves upgrading rail, power and signalling systems along 72 kilometres worth of rail line to Southern Cross Station from Pakenham and Cranbourne. Station platforms will also be extended for supporting 65 new and lengthier High-Capacity Metro Trains. By late 2018, this will be finalised and allow for an extra 20,000 passengers per day, representing a 42 percent increase in capacity for the line.
A proposed design was released in February 2016 by the Victorian Government for an elevated rail solutions.
In April 2016 it was announced that, based on feedback from the community, that a number of various measures would be incorporated by the project, including improved security for train users, enhanced PSO facility at Noble Park, minimizing how bulky the elevated structures are as much as possible, changing the location of the Noble Park substation to offer more open space, more car parking, more bike paths, better lighting, noise walls and privacy screen along the structure, and escalators having power supply that is uninterrupted at all the new stations.
In November 2016, a number of different improvements for the new building design for the Murrumbeena Station were announced. They included lowering the station canopies and installing a secondary entrance.
The design to remove nine level crossing is going to create over 225,000 square metres of new open space, parklands and community spaces along with 17 kilometres of pedestrian and cyclist paths which will result in a continuous path being created from Caulfield to the EastLink trail. Overall noise will also be reduced by the design throughout the corridor in addition to the surrounding area, making it possible to keep more mature trees as well as provide the chance to plant new larger specie trees close to the rail line. The local heritage value of the stations is also reflected in the design.
Major construction has begun to create new open spaces over the Cranbourne-Pakenham line, remove nine level crossings and rebuild five new stations.
Various methods will be used by the construction team to build the new elevated structures.
A gantry crane will be used by the construction team to build the elevated structure given that the rail corridor is so narrow between Grange Road and Poath Road. The narrow rail corridor of this section means it won’t be possible to crane in sections for the structure. An advanced gantry crane is being used instead by the project for the automated carrier to be fed. The carrier will drive along the elevated structure with deck sections being laid on top of its support piers.
In Clayton and Noble Park the elevated rail section will be built using traditional crane methods by a Crane hire company Sydney. After the large beams get delivered to the site, they will be lifted into place by large cranes.
Construction is occurring simultaneously in several difference work areas. Numerous cranes are working across the whole corridor and can move across different work sites quickly, which allows for flexibility in meeting the construction deadlines.
Innovative Construction Methods
Segments of concrete will be delivered by track. Gantry cranes will then be used for lifting them off the ground. There will be 40 metre concrete spans created by stressing segments together. The elevated rail deck will be made out of the concrete segments. This new span will then be lifted up by gantry cranes onto the elevated structure.
The span is lifted and then placed on the straddle carrier. It then gets taken to the elevated rail deck to the area where the new span will be located.
The launching beam slides out to allow the straddle carrier to place the span on top of the support pliers.
Each span is latter pinned to the support pliers with steel.
Next the launching beam is moved into place again to allow the straddle carrier to be driven back over the elevated decks and to the Murrumbeena Assembly Area for picking up the next concrete span. The launching beam is then tied into position before the next span arrives.