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A Kargul, W A Günthner, B Vogel-Heuser

Model in the loop simulation towards the development of a smart fleet management system

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Series: w78:2015 (browse)
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A. Borrmann, Y. Ji, I.-C. Wu, M. Obergrießer, E. Rank, C. Klaubert & W. Günthner

ForBAU – The virtual construction site project

Abstract: The paper introduces the Bavarian research cluster ForBAU which has been launched in January 2008 with the aim of an improved planning and management of construction sites, especially in infrastructure projects. To realize this goal, the research cluster focuses on developing a virtual representation of the construction site which involves all essential aspects, including models of the buildings under construction, the environmental boundary conditions, the construction procedure, the logistics processes, and the required resources. The resulting virtual construction site forms one the one hand the basis for simulating the construction process, which allows to identify critical aspects of the construction project in advance and to adapt the resources and the scheduling accordingly. On the other hand, the holistic virtual representation of the real construction site is used during the execution phase to capture all available information about the project – enabling site managers, controllers and engineers to get a detailed overview on its progress and identify potential problems in an early stage.

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Full text: content.pdf (1,199,024 bytes) (available to registered users only)

Series: w78:2009 (browse)
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Y. Ji, A. Borrmann, E. Rank, J. Wimmer & W. A. Günthner

An Integrated 3D Simulation Framework for Earthwork Processes

Abstract: The paper presents a framework that helps in the planning and analysis of earthwork processes in infrastructure construction projects by applying simulation techniques. In contrast to existing solutions, the framework presented here makes it possible to retrieve all the information required to run the simulation in an automatic way from a holistic 3D model that integrates the 3D roadway model, the 3D surface model and the 3D subsoil model. The most important information needed to simulate earthwork processes are the location and the quantity of cut and fill sections. To generate this data, a computational method has been developed that applies a voxelization to the merged 3D model. The result is a large set of cubes, each of which possesses a dedicated position and material. This mass haul data is much more fine-grained than that used in traditional approaches and forms an excellent basis for performing a detailed earthwork process simulation. The employed simulation engine which is based on the discrete-events paradigm, serves to describe entities such as diggers and trucks, their behaviour (e.g. digger fills truck) and the time required for an atomic process step (to fill a truck, for instance). The result of the simulation is a set of detailed information on the utilization ratio of the employed resources and the time required for completing the entire earthwork project. This allows the user to identify bottlenecks and slack periods and adapt the resources accordingly.

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Full text: content.pdf (247,259 bytes) (available to registered users only)

Series: w78:2009 (browse)
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