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Sweco’s ‘Live BIM’ Railway Project

Sweco’s ‘Live BIM’ Railway Project
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CASE STUDY Project Summary Organization: Sweco Infrastructure AB Solution: Rail and Transit Location: Hallandsås, Sweden Project Objectives • Implement a systematic and integrated work process for BIM to keep the project on schedule, and increase the project quality throughout the entire lifecycle • Develop reusable BIM objects, methods, and techniques • Use structured model information for asset management when the tunnel is operational Products Used Bentley Navigator, Bentley Rail Track, InRoads, MicroStation, ProjectWise Fast Facts • Sweco developed a standardized coordination process, supported by Bentley Navigator and MicroStation that allows the reduction of design faults and increases quality. • By combining ‘as-built’ tunneling data and the latest engineering design information, the team can effectively manage the changing conditions as tunneling progresses. ROI • Resolving non-constructible conflicts during the design stage reduced construction rework by 50 percent, reducing costs and ensuring the project stays on schedule. • Detecting conflicts and avoiding collisions in the design has saved an estimated SEK 50 million in rework. • Trafikverket’s central database of all 3D objects, templates, and scripts used on the Hallandsås project, will save time and ensure quality for future projects. Sweco’s ‘Live BIM’ Railway Project Significantly Bentley InRoads on Hallandsås Project Improves Efficiency ® Powerful tools for the design of civil infrastructure BIM Implementation Based on Bentley Products Enables Team to Meet the Challenges of Designing in Parallel with Production Keeping the Hallandsås Tunnel Project on Track The construction of a railway tunnel through the Hallandsås ridge in southern Sweden has a long history, but the end is in sight with the start of traffic services scheduled for late 2015. To help meet the demanding project schedule and the challenges of performing tunnel excavation and detailed engineering design in parallel, Trafikverket, the Swedish Transport Administration, chose to advance its use of Building Information Modeling (BIM) practices with the help of Sweco Infrastructure AB. Sweco was given the responsibility for all BIM related strategy and coordination of the Hallandsås project including helping the project team implement effective BIM processes to optimize production, develop integrated 3D models through a collaborative design process, and use that information throughout the project lifecycle. The successful BIM implementation on this project, using Bentley® ProjectWise®, MicroStation®, InRoads®, Bentley Rail Track, and Bentley Navigator, has resulted in innovative methods, reusable resources, a reduction in costs, and productivity improvements that help keep the project on schedule. A Challenging Project Creates Opportunities When completed, the tunnel through the Hallandsås ridge will increase the railway capacity from 4 to 24 trains per hour, enabling more traffic to be moved from road to rail. Building the tunnel however, has been a major challenge caused by the geological nature of the ridge, with partly cracked and disintegrated rock and large amounts of water. Construction originally began in 1992, but was discontinued five years later due to alarming impacts on the environment. The project restarted in 2003, after thorough investigations, legal trials, and political discussions. New tunneling techniques and equipment enabled the creation of a fully lined water-tight tunnel to minimize environmental impact. While minimizing the environmental impact is crucial, the project still had to be completed in time for the start of traffic services in 2015. As the project progressed, and Trafikverket realized that planning and detailed engineering design of track and related infrastructure would need to happen in parallel with the tunneling, it sought new and innovative ways of working to keep the project on schedule. “Trafikverket have been using BIM techniques and methods since 1994 for its rail projects but concluded that increasing its level of BIM adoption would help improve productivity and reduce rework on the Hallandsås project,” said Leif Malm, technology strategist for major projects at Trafikverket. Developing Effective BIM Processes Working with BIM can often require a shift of focus, as processes and the organization of information are just as, if not more important than, the technology or products used. For a successful BIM project, it is vital to create distinct processes that enable all engineering disciplines to access and deliver the right information, to the right people, at the right time. Clear directives concerning classification of all constructible objects including track, catenary, substations, and buffers, were required, as well as specifications for the metadata/information each object must contain. Procedures for systematic risk management and quality assurance of the digital model must also be established. Well defined working methods, including coordination meetings and communication between the different stakeholders, provide the ability to detect, analyze, and solve problems as early as possible.

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“To be successful with BIM, you need to change your mindset and way of working. Bentley software provides great freedom for creative users to challenge the conditions of the project.” – Daniel Ahnsjö, BIM Strategist, Sweco Infrastructure AB Find out about Bentley at: www.bentley.com Contact Bentley 1-800-BENTLEY (1-800-236-8539) Outside the US +1 610-458-5000 Global Office Listings www.bentley.com/contact Sweco worked with Trafikverket to create an integrated 3D-object library, as well as automated scripts for when objects are inserted into the CAD models. Every object is specified with...

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