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The historic Flinders Street viaduct is undergoing critical repairs to ensure the over 100-year old rail bridge can continue to support rail traffic.
The finalists for the Year in Infrastructure Awards have been announced.
Facilitated by software and digital twin provider for the design, construction, and operation of infrastructure, Bentley Systems, the finalists span categories including digital construction, digital cities, and rail and transit.
The awards recognise users of Bentley Systems software and highlight those who are pushing the envelope of digital design, construction and maintenance of complex infrastructure assets.
Chris Barron, Bentley’s chief communications officer said the awards showcased how digital tools have been used throughout COVID-19 to ensure that infrastructure projects are delivered.
“The circumstances of the global pandemic have made the past few months a challenge for us all, and it is a testament to our users’ resilience that we received over 400 nominees for our Year in Infrastructure Awards program.”
Projects that will be competing for the final award include the Skanska-Costain-STRABAG Joint Venture, that is delivering the UK’s HS2 main works civils contract for the Digital Cities category.
In the Rail and Transit category, high speed rail, signalling renewal, and digital engineering projects are finalists. Projects utilising Bentley’s asset performance tools are also highlighted in the Road and Rail Asset Performance category.
Other rail related projects to reach the finals stage of the awards include the design and construction of the world’s tallest rail pier girder bridge by Indian Railways and Saidel Engineering’s nine storey residential building above subway tunnels in West Bucharest.
Users of Bentley’s reality modelling solution have also been recognised. In Australia, the Warragamba Water Pipeline Digital Twin is a finalist.
To hear more about how Bentley System’s software can be used in a rail context, register via the link below for the upcoming webinar, hosted by Rail Express.
The winners of the Year in Infrastructure Awards will be announced during Bentley’s Year in Infrastructure conference, that will be delivered virtually on October 20-21.
While governments have trumpeted major stimulus spending projects in rail to spur the economy out of COVID-19, the value of contracts awarded in 2020 has fallen significantly, according to analysis from Infrastructure Partnerships Australia (IPA).
In 2019, contracts to the value of $27.1 billion were awarded in the infrastructure sector. In the first eight months of 2020, only $6.7bn in contracts have been awarded, a quarter of the 2019 total.
Of the contracts awarded, rail has been overlooked, with roads, water, social infrastructure and other transport receiving more money.
According to IPA, as governments have turned to small-scale stimulus projects, approvals and signatures on contracts has fallen. In many cases, these projects were already funded and were brought forward to get money flowing into the economy and increase business activity to rebound after COVID-19.
“Over the last few months, governments have taken smart steps to accelerate small-scale quick to market projects to soften the COVID landing,” said IPA chief executive Adrian Dwyer, who noted that larger projects will sustain the economy for the long term.
“This data shows we now need to accelerate approvals of large-scale projects, add to the major infrastructure pipeline, and ensure we keep pace on delivery,” he said.
“As we governments prepare for the delayed budget season, this is the time to scale up for the long economic recovery ahead.”
With the third quarter of 2020 drawing to a close, contract values could pick up for 2020 in the final quarter, with the contract for the next stage of Sydney Metro expected to be announced. Other contracts, such as those for the Narrabri to North Star section of Inland Rail, could also contribute to the 2020 total.
While rail was the smallest infrastructure sector in 2020 by contract value, it was the largest in 2019, with $11.6bn committed to the sector. In 2018, $6.6bn of contracts were awarded to rail projects.
There is over $3bn of announced funding for rail as part of state and federal stimulus plans.
Using a digital twin to drive operational decisions when it comes to maintenance is about turning what could be a cost into an asset.
By 2025, the world will be creating 175 zettabytes annually, according to market research firm IDC’s Data Age 2025 report. To put that in context, one zettabyte is equivalent to one trillion gigabytes. How rapidly this data is growing can be demonstrated by the fact that in 2012, only one zettabyte of data existed.
But, with all this data being produced, how much of it is actually useful? While a rail organisation is only a small proportion of the global data total, according to Andrew Smith, solutions executive responsible for Bentley’s Rail and Transit solution, they are still producing a significant amount of data.
“Rail organisations typically are very data rich,” said Smith. “They’ve got a large number of asset disciplines because it’s a huge complex system and each of those asset disciplines has a number of inspection and measurement mechanisms that can produce data.”
This data on its own, however, is not yet a useful resource.
“Data is a discrete fact about something,” said Smith. “For example, the distance between the left and right rail at this location is X, but data is no use to you when you’re actually trying to either work out short term what you’re going to do or longer term what may happen in the future. What you need to do is start a transformation process, so the first step of that is to go from data to information, which is data in context with meaning attached.”
Giving data its context turns what can be seen as a cost, the accumulation and storage of data, into a resource, information that can be used to make a decision.
“In order to be able to do that, you need to have a framework in place that allows you to pull all the different classes of data together, such that you can see all of that data in context,” said Smith. “And to me, that’s at the heart of the digital twin.”
Digital twins are a replica or model of a system or asset that can be used to take the information that a rail organisation has, in the form of data, to create insights, that are conclusions drawn from data and information.
“When you bring all this information together, the digital twin can tell you how as well and why things are happening, and it can give you contextual history,” said Smith. “The digital twin can give you design intent information that you wouldn’t necessarily have otherwise, as well as the as-constructed record. Critically, a railway is a system, it’s not just a set of isolated components, and what a digital twin allows us to do is understand specifically the relationships between those components and how they can be affecting each other.”
While digital twins are widely used in many fields, including construction and manufacturing, they have a distinct role to play when it comes to the maintenance and management of rail assets. As the complexity of operating a railway requires various departments covering different skills and mandates, applying a digital twin can overcome the data and organisational silos. Smith, who has been working in the rail industry for over 20 years, highlights one way in which this can be applied.
“For anywhere that’s got overhead electrification for example, if you’re on ballasted track you can move the track from side to side through maintenance, but you need to maintain the relationship with the overhead wires, but these are often managed by two different teams. The digital twin will manage by design the relationship between the two. The maintenance records, where you’re going to go, and the type of maintenance you’re doing means that there is a chance that you will actually introduce a change to the overhead wire relationship. Therefore, you need to tag that work order as needing somebody to go out and actually measure the overhead wire relationship as well, whereas historically that relationship wouldn’t be as tightly coupled.”
DESIGNING A RAIL-BASED DIGITAL TWIN
Getting to this level of maturity with a digital twin takes a deep understanding of how a rail network operates and how best to design a digital twin that fits the reality of a rail organisation. Bentley, as part of its portfolio of solutions in the rail and transit space, has experience working with rail operators around the globe to design and deploy digital twins. From this experience, Smith highlights, the usual understanding of what a digital twin is can be re-evaluated.
“Normally if you think about a digital twin you actually start with a four-dimensional model, however railways often don’t think in terms of XYZ axes. They tend to think in terms of linear distances with lateral and vertical offsets and that drives the way that measurements are made, the way that inspections are made, but also the way that maintenance is actually managed. If you’re sending someone to go out and do some tamping along a piece of track, you don’t send them to an XYZ coordinate or a latitude- longitude coordinate, you’ll send them this many metres past kilometre post seven on such and such a track.”
With this in mind, Smith suggests that digital twins in the rail space can be more useful if they are designed to fit the way that railways are understood. Then, the data that makes up the digital twin can be overlaid on the representation of the network. When needed, for example at a station or in yards, this data can be visualised as a three-dimensional model, but linear visualisations may be more appropriate for a section of track.
To get to the point of having a representation of a rail network, a large amount of data will have to be collected and interpreted. As managers of an array of legacy assets, rail organisations can turn to the use of artificial intelligence (AI) to sort and organise the vast streams of data, said Smith.
“One of the challenges that we see with a digital twin for a lot of brownfield sites in particular is that there are a large number of assets in place that are not being represented digitally. Being able to use image recognition or identifying features from reality meshes and then being able to put an attribution against them is a great use of AI to be able to identify where the assets are.”
With this data in place, the twin must be maintained and kept up to date. With networks spanning across hundreds of kilometres, rail organisations can use automated surveys of a network to provide the constant data upkeep needed.
With the digital twin now operating as a living representation of a rail network, defect detection can be done in a way that gets to a root cause, rather than just addressing individual issues. One example, that Smith describes is if measurement scans identify vertical deterioration. A digital twin would then allow for a cross referencing against other assets that are in place, to see if there is a culvert on that section of track.
“Then I’m not going to send a tamper out,” said Smith. “The first thing that I’m going to do is send a crew out to inspect a culvert to see if it’s collapsing over time. The next thing I might want to do there is ask, if I’ve got twin track, am I seeing the same deterioration on both tracks? Normally they’d be considered in isolation, separate from each other. Then I would ask, has any maintenance taken place at this region? That’s not just maintenance of this asset, but all maintenance records, so I could say, ‘Hang on, someone actually went in there and did some maintenance work on the drainage in-between, but it happens to be in an area that’s close enough that it could’ve had an unexpected knock on onto the condition of the track.’”
These kinds of insights can only be gained through the kinds of insights a digital twin is able to offer, by bringing together disparate data and putting that data into context.
DRIVING THE SOLUTION
While a digital twin may seem like a laudable goal on its own, according to Smith, the implementation of such a tool only makes sense when a rail organisation has identified what are the issues that it needs to solve.
“The driver here is not a technology change. The driver is to change the way of working, so an organisation has to first understand its current working practices, where the efficiencies and inefficiencies are, where the limitations and constraints may be, and then we can understand the aspirational state, where they actually want to be at some stage in the future.”
Implementing a digital twin begins with understanding the process of going from a current state to an aspirational state in the future. Rather than jumping in straight to a predictive maintenance solution, the first step may be to identify where the current most significant issue is, with a plan or vision to have a predictive system at a point in the future. Understanding where the technology is going to be implemented comes down to working with the people who are going to be using the software.
“It is absolutely critical that those people are engaged right from the outset, not just the management but the end users,” said Smith.
To get people on board, Bentley has used model offices where representative users are invited to be involved in the design process and give their insights into the particular challenges they face.
“Then there’s buy in,” said Smith. “There’s engagement at that side, which means that the final product is a tool that the engineers have designed and set up to help them do their job better that means they’re positive about the tool and they’re positive about the process change that’s in place to be able to do it.”
Rather than success looking like a piece of software that is installed to contract specifications, Smith outlines how in developing a success plan for the implementation of the software, the outcome is about delivering value.
“Owner operators of railways aren’t installing these systems because they like technology. Technology is an overhead to them – it’s a cost, an expense, and it’s a risk, so the only time that it’s worth doing is when they can show that the value is greater than the cost associated with it, so what we’re moving to is making sure that the focus is now on the value to the users instead,” said Smith.
“You can look into the future and run ‘what if’ scenarios. So, I’m going to increase the tonnage over a particular length of rail and I’m going to run a simulation of what that’s going to do to my rail replacement strategy that I have in place. We can use AI on top of this to look both tactically how do I optimise right now, where do I best spend money, but also starting to look further out by running simulations and trying to predict what the impact the change is going to have.”
This value can be defined in any number of ways, but as Smith highlights, it is the process of creating insights out of data.
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In a flurry of infrastructure funding announcements, the federal government has only allocated funding for one new rail project, a new stop on the Canberra light rail line in Mitchell.
The stop, at the intersection of Flemington Road and Sandford Street, will be the 14th for the network. The federal government and ACT governments will each contribute $6 million.
The funding comes from the $1.5 billion of infrastructure funding announced by the Prime Minister Scott Morrison on June 15. As of June 22, roughly a third of the funding had been announced, with the light rail stop in Canberra the only rail project receiving funding.
In his address on June 15, Morrison noted that $500m of the funding would go towards road safety upgrades, and $1bn would be for non-mode specific “shovel-ready” projects that were identified by the states and territories.
So far, funding allocated under the ‘shovel-ready” project stream has been distributed to Queensland with $204.3m, Western Australia has received $96m, $13.6m to the NT, and $16m in the ACT.
Out of the hundreds of millions allocated to “shovel-ready” projects, $11m will go towards non-road projects, with $6m for the Canberra light rail stop and $5m for pavement rehabilitation along Northbourne Avenue, also in Canberra.
A federal government spokesperson said that further road and rail commitments to be funded under the $1.5bn infrastructure package will be announced in due course.
ACT Minister for Transport Chris Steel said that work would soon get underway on the new tram stop.
“Design is being undertaken on a 14th stop on the light rail line and we will work with Canberra Metro to build the station at Sandford St over the next year,” he said.
“The new light rail stop on Flemington Road at Sandford Street will provide better access to the Mitchell business district in addition to the existing stop at Well Station Drive.”