BIM processes and workflows using the example of the subway extension in Stockholm

Abstract

Three major technical and economic factors of the ”Yellow Line“ project of the Stockholm subway network justify the decision to apply a BIM‐oriented design: (1) Early optimization and risk minimization for cost and time and active counteraction to the loss of information throughout the entire lifecycle of the project, (2) all technical aspects are to be incorporated in the design simultaneously and from early stage onwards, (3) numerous surface and subsurface structures, including tunnels under operation and in vicinity of the new line lead to a complex geometrical layout and geotechnical influences on each of these structures are to be minimized. Commercial 3D/BIM products have proven to be developed for application in surface structure design and new methods had to be established to cope with high quality tunnel modelling, coordination and tunnelling challenges. This publication is addressing the experience and solutions made during the design: Choice of appropriate modelling tools, applied methodology for a structured design process in a multidisciplinary and manifold work environment, accounting to highly complex geologically‐geotechnical data, seamless transfer of the model data to numerical analysis tools. The advantages and disadvantages of using BIM methodology are discussed and recommendations with regard to future development are presented.

Methodology for Building Information Modeling (BIM) Implementation in Structural Engineering Companies (SECs)

“…is workflow is an adaptation of generic BIM flows proposed in the project execution planning guide [22] and is based on professional interactions in a central model: the BIM platform for a given SEC (Revit, for example) will contain volumetric models, reinforcement steel or other structures, as appropriate, and detailed designs and drawings [40]. us, all the models may be "superimposed" in order to visualize conflicts and optimize interaction.…”

Metro Engineering Project Schedule Optimization Based on Wireless Network Communication and BIM Model Algorithm

“…Radio frequency identification technology (RFID) is a shortrange wireless communication system. It recognizes specific targets through wireless communication signals, does not require mechanical or optical contact with the target, collects corresponding data, and can be applied to the identification and tracking of construction products [15,16]. RFID technology consists of four parts: RFID tags, RFID readers, supporting software, and RFID application software systems, as shown in Figure 5.…”