Infrastructure projects in inner‐city areas are gaining in importance on the one hand and are subject to increasingly restrictive requirements due to the space available on the other. This affects not only the site installations, but also to a large extent the access to and the material handling on the construction sites. Implenia has been using the digital capabilities of BIM to improve project execution for several years. Visualisations, data management and collaboration create a transparency that is necessary to face the difficult boundary conditions. Lean Construction method of optimizing and stabilizing material flows, which is new to the infrastructure sector, can ideally use BIM digital tools to map its processes. It was obvious to use this symbiosis of the two methods.Implenia was commissioned in 2019 with the project 380 kV Kabeldiagonale Berlin with a nearly 7 km long TBM tunnel in the middle of Berlin. At this point in time, when the concepts for TBM tunnelling are being prepared, several insights can already be drawn that are ground‐breaking for the application in future projects.
The digitalisation of many areas of the economy is progressing, also in construction, where the intention is to provide information about built facilities for decision‐makers concerning the design, building and operation of construction works in a consistently high quality, easily read and data‐based. Until now, digitalisation in construction has been retarded by the high complexity of construction, which should however now rapidly change. The DAUB recommendation ”Digital Design, Building and Operation of Underground Structures“ is intended to make a contribution in this regard. Recommendations from the German Tunnelling Committee DAUB normally represent ”best practice“ solutions from German tunnelling. For Building Information Modelling (BIM) in tunnelling, there is not however yet sufficient experience. There have indeed been many solutions on projects but there is a lack of the appropriate standards for systematically applicable industry‐wide solutions. The DAUB recommendations show how appropriate standards can be created. The following article discusses selected themes from the DAUB recommendations.
Tunnels are significant in shaping our future infrastructure. Increasing limitations of the available ground require underground solutions for future infrastructure projects. Due to various reasons, boundary conditions for project realization are becoming more and more substantial, and the parties involved have to tackle a wide range of stakeholders' interests. Digitization may be able to handle some of these challenges and is one of the most relevant topics in the near future of the construction industry. First approaches of digital data capturing in different activity fields of project execution, such as geological and geotechnical conditions, survey, and reporting, are launched within Implenia's initiative. This article discusses essential aspects of data capturing, particularly in the light of the vast data volumes generated throughout tunnel construction in Europe and gives an insight into the various activities of Implenia on how to tackle these problems. The various TBM and drill-andblast excavated tunnel projects illustrate the variability of data management and implemented solutions to work with the tremendous amount of data. In each case, one can clearly state that construction teams involved in digital data management highly appreciated the merits for their daily business: saving time, gaining transparent information, controlling processes, and more. The beneficial capability of appropriate data management in project execution is evident and will be carried out within Implenia's projects.
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