The recent advance of Building Information Modelling (BIM) and the related needs for BIM-based interoperability of more and more specialized AEC tools in various construction subdomains showed that (1) a global model for all data in a construction project is neither realistic nor practical target, and that (2) BIM data typically have to be combined with other kinds of construction related data to be efficiently applied in real tasks. This paper addresses the issue of BIM extension for such multi-model domain tasks on the basis of work done in the frames of the EU project HESMOS for the development of an energy-enhanced BIM framework (eeBIM) enabling the integration of multiple needed resources (climate, occupancy, material data etc.) and the interoperability of various energy analysis and monitoring tools in an Integrated Virtual Energy Lab Platform (IVEL). It explores the pros and cons of three principal approaches (1) Extending the BIM Schema, (2) Extending the BIM data, and (3) Using a Link Model, before focusing in particular on the latter approach which provides for greatest generality, modularity and application scope as it does not require changes in the BIM schema and guarantees maintenance of each model within its own domain. The generation of the eeBIM model from initial architectural CAD-BIM data and future research plans complete the presentation.
New challenges have raised in parallel to the expansion of Building Information Modeling (BIM) like applying it for optimizing building design already in early stages. This implies analysis of many changes in building design which should be all evaluated in terms of performance but also in terms of uncertainty. The presented research proposes a methodology and information models for enabling systematic and on-demand energy simulation of many building design scenarios.
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