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The start of work underground on Aotea Station is said to be a significant milestone for the City Rail Link and for Auckland.
AN OFFICIAL spade in the ground celebration this morning marking the move underground to build City Rail Link’s Aotea Station also heralds the re-opening of one major road in central Auckland and the temporary closure of another as construction shifts focus.
Auckland mayor, Phil Goff, turned the first spade of soil to symbolically start underground construction.
“The start of work underground on Aotea Station is a significant milestone for the City Rail Link and for Auckland,” mayor Goff says.
“Aotea Station is expected to become New Zealand’s busiest train station after it opens and the CRL itself will be a game-changer for the city, doubling rail capacity and ultimately moving 54,000 people at peak hours, the equivalent capacity of three Auckland Harbour Bridges or 16 extra traffic lanes.”
Exact dates are still to be finalised, but Wellesley Street is expected to re-open first in June or July, followed a few days later by the closure of the Victoria Street / Albert Street intersection.
“It is time to start preparing for these changes by planning a better way into the city centre,” said Dr Sean Sweeney, chief executive for City Rail Link.
“As New Zealand’s largest-ever transport infrastructure project, disruption is unavoidable, but it is important to remember that the city centre around the Aotea site remains open for business and for leisure – it will always be a great place to work, to visit, and to support local.”
Sweeney said the project is also working with Auckland Council, Auckland Transport and other organisations to minimise disruption, and to reschedule and redirect bus services.
“The easiest way to reach this part of town will still be by public transport, by foot, bike, e-scooter or another sustainable travel method,” he said.
THE duplication of the Pacific Highway at Lisarow, near Gosford, is proceeding, with concrete girders for a new rail bridge lifted into place recently, as part of the $178 million project to help improve traffic flow, travel times and safety.
Regional transport minister Paul Toole said 27 girders were loaded at the northern compound on the Pacific Highway using a crane and transported along the highway on oversized trucks to the new bridge, where they were installed using a 600-tonne crane.
“A crew of more than 70 workers was needed over the weekend and on Monday to install these girders in a complex operation while the rail line was closed for regular maintenance,” Mr Toole said.
“The duplication project has provided work for about 1,000 people since work started about two years ago, including more than 150 different suppliers and contractors.
“The concrete girders were lifted into place starting early on Saturday morning and crews worked around the clock to ensure work was completed by the time the rail line was due to reopen.”
Member for Terrigal Adam Crouch said the $178 million project would provide two lanes in each direction on the Pacific Highway between Ourimbah Street and Parsons Road.
“Work is also underway to install traffic lights at the Railway Crescent and Macdonalds Road intersections, as well as better parking access at Lisarow Station,” Mr Crouch said.
“In mid-2021 traffic will be shifted onto a new section of The Ridgeway so that work to widen the intersection can occur.”
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Martinus is about to begin piling works for the first bridge on the Carmichael Rail Network.
Already, construction of the first of many waterway crossings has begun while bulk earthworks continue.
Chief operating officer Ryan Baden said the project involved a number of civil construction processes.
“We are delivering the port-side civil works, which is around 86 kilometres of the earthworks formation with 10 multi-span superstructures – one that spans 50 metres, 87 culvert structures and three-million cubic meters of cut to fill.”
To prepare the rail for installation, on-site flash-butt welding is taking place.
Martinus has 300 staff on site working on the project and is looking to involve locals wherever possible.
Loram is building upon its history of providing the right services to the rail industry with sophisticated expertise in track and infrastructure monitoring technology.
For over 50 years, Loram has been providing rail grinding and track maintenance services to the Australian market. It has become only natural, then for the company to use its expertise in precision rail management to innovate and provide a comprehensive solution when it comes to the interaction of different rail infrastructure assets.
According to Thomas Smith, director business development, cost and consistency are two major issues that are facing rail networks. Having a rich and understandable picture of the track asset can allow for better decisions to be made when it comes to maintenance.
“Having an advanced diagnostic profile of the current health of your track and identifying trends over time allows our customers to migrate to a preventative maintenance program which can save significant money by extending the life of their assets,” said Smith.
Having provided rail grinding, ballast cleaning, and track maintenance equipment and services for decades around the globe, Loram has seen where the gaps are when infrastructure managers are seeking to optimise the upkeep of their network.
“For decades, Loram has had the equipment for repairing and/or maintaining the rail and drainage, including ballast and ditches. Having the ability to know exactly where and how to apply that equipment has been a development process leading Loram to create or acquire the technology it offers today,” said Smith.
This technology has taken Loram’s knowledge of the dynamics affecting track condition and brought a level of precision engineering. For the past 30 years, Loram has been refining its rail grinding through the use of high-speed measuring and analysis, which uses laser camera technology. To analyse track for substructure maintenance, Loram has deployed cutting- edge technology for the last 15 years.
These developments in inspection services have been crystallised into three major areas. The first is rail inspection services, which use rail inspection vehicles (RIV) to collect rail profile, wear, gauge, and cant data. This data is then used to refine a rail grinding program, said Smith.
“Collected data is mapped to exact track locations to positively match the grind plan and applied to the grinder.”
The second area is Loram’s Aurora Track Inspection services. These use imaging technology to scan and reveal the exact condition of below rail infrastructure. Manual detection methods can only detect so much and are limited in terms of the speed at which they can be conducted.
“Aurora can perform inspections at over 65km/h and plays a critical role in prioritising and streamlining our customers’ capital maintenance programs,” said Smith.
Loram’s third area of inspection services are in the field of geotechnical inspection services. These services use tools such as ground penetrating radar and LiDAR scanning technology to measure and analyse geotechnics and substructure. The equipment that performs these scans can be mounted on the vehicle platform most suited to the task, including geometry cars, rail grinders, hi-rail trucks, or other track vehicles.
Taking the results of these services together, Loram can build a solution for a rail infrastructure owner or manager that includes track maintenance as well as formation analysis and remediation. With experience working in many different environments, Loram’s services are able to be delivered in any circumstance.
“Loram hasn’t found a location yet where we couldn’t deploy and manage our services. We recently conducted a geotechnical survey in South America where there wasn’t even rail infrastructure present, only formation. Our technology is set up to be deployed in many situations and can be customised to help meet our customers’ demands,” said Smith.
With the data collected through a combination of these technologies, the next step is to ensure that it is presented in a way that enables actions to be taken and decision to be made. To simplify this, Loram is working on combining data from its various services into a comprehensive track maintenance platform, said Smith.
“The data we collect is technical, time consuming to analyse, and can be overwhelming. That is why the final output that Loram provides our customers simplifies the information into easy-to-understand reports that are customised to our customer’s specific needs.”
With these insights in hand, maintenance can be conducted in a way that uses resources in the most efficient way possible.
“Having the ability to accurately measure the condition of your track assets allows our customers to intelligently and precisely plan maintenance activities with regards to subgrade, ballast, sleepers, components, and rail,” said Smith. “When our customers understand the conditions of these assets and how they degrade over time, then they can take actionable measures to prevent degradation and truly maximise the life of their investments.”
What makes Loram unique, however, is that not only can it identify and monitor issues related to track and infrastructure management, but it has the ability to fix and remedy the issues.
“With all of these inspection and maintenance solutions provided by one company, we have the experience, expertise and historical data to understand how all of the different rail infrastructure assets and dynamics affect each other,” said Smith.
Loram’s own rail grinding and friction management equipment can be deployed to areas of track where defects have been found by rail inspection vehicles. When ballast maintenance is identified as an issue, Loram has an entire fleet of ballast maintenance equipment and geotechnical services that are designed to manage track drainage and quality, or material handling solutions that can pinpoint where extra ballast is needed.
Sleeper maintenance is another area where inspection technology can be used to determine the quality of individual sleepers and components, with the data management to deliver customised reports to the required specification.
“We have this broad range of track data and knowledge from seeing just about any track issue that allows us to help our customers precisely plan, prioritise, and execute track inspection and maintenance on their networks,” said Smith.
The City Rail Link (CRL) project in Auckland, New Zealand, has officially accepted ownership of its tunnel boring machine (TBM).
The machine has been assembled in Guangzhou, China and after a number of tests is ready to be shipped to New Zealand, said Francois Dudouit, project director for CRL’s tunnels and stations delivery consortium Link Alliance.
“The TBM successfully underwent more than 500 tests to make sure everything works as it should. There is now great excitement that we are ready for the next step – to bring the TBM to Auckland.”
The TBM has been designed to meet the unique challenges of tunnelling under Auckland, where it will dig the tunnels, transport the excavated spoil, and install the concrete panels that will line the tunnels.
“It is a unique, world class machine – an underground factory – purpose built to carve its way through Auckland’s sticky soil,” said Dudouit. “Just about everything that moves was tested to make sure it can do the transformational job it’s been designed for.”
While the CRL project has been slightly hampered by restrictions on travel for key personnel, and the delivery of the TBM was delayed due to the factory closing in China, the successful handing over of the TBM demonstrates that the project can continue during COVID-19, said Sean Sweeney, chief executive of CRL.
“The successful factory assessment tests and the handover of the TBM to the Link Alliance is a very clear and strong indication that the CRL project can meet critical milestones in a Covid-19 world.”
The TBM will carve out the twin, 1.6km-long tunnels between Mt Eden and central Auckland where it will connect with tunnels from Britomart. Delivery is expected in October and it will begin tunnelling in April. Each tunnel is expected to take nine months to complete.
The TBM will be named in honour of Māori rights champion Dame Whina Cooper.
With tunnelling complete on the Metronet Forrestfield-Airport Link project, tracklaying has now begun along the 8-kilometre-long tunnels.
Martinus Rail will install the 40 kilometres of rail needed to form the track in each tunnel, along with tie-ins at Bayswater and stowage at High Wycombe.
The first kilometre of track has already been laid, and Western Australia Premier Mark McGowan said that this was a significant milestone on the project.
“Tracklaying is one of the final major events on the construction of a rail line – it’s an exciting milestone for this $1.86 billion project, with more than 2,400 tonnes of Australian-made steel being prepared.”
WA Transport Minister Rita Saffioti said that the project was coming together.
“We’re at an exciting time for this major infrastructure project – the tunnel-boring machines have finished creating our tunnels, our three new stations are taking shape and tracklaying is now underway.”
The 27.5m long pieces of steel are flash-butt welded into 220 metre strings. The Martinus teams have been working simultaneously to weld the rail, transport it and lay it along with the sleepers to form the skeleton track, before concrete is poured to complete the slab track.
Other work is also underway to install the overhead line equipment and the communications and signalling systems.
Roughly 100 jobs are supported by the tracklaying and rail infrastructure stages of the project.
Once complete, the Airport Line will link the Perth CBD with the airport and the eastern suburbs, including Redcliffe and High Wycombe. Thousands of commuters expected to use the rail link each day when trains begin running in late 2021.