05 moder building information modeling - vtt
TRANSCRIPT
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Auf Wissen bauen
Building Information Modeling
Gunnar Grün, Munich, 7.3.2018
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Building Information Modeling (BIM)towards the uniform central building model
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BIM today (1)
Used for visualization
Reception as BIM being complex 3D CAD
Yet most used data exchange format is PDF
Models are provided as product catalogue
BIM properties retrieved from producer
Layers are used to separate domain models
Calculations performed on models
Collision check
Quantity take-off
Costs
Quelle: associated-architects.co.uk
Quelle: mepcor.com
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BIM today (2)
BIM mostly applied little & closed
Quality issues with IFC data
Responsibilities and liabilities
Quelle.: AEC3 Deutschland GmbHQuelle: Autodesk.com
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BIM today (3)
Undefined level of detail in building lifecycle
Uncertain input parameters for calculations and predictions
Data quality and depth of information according to usage scenario and field of application
City, district, building, room, …
Quelle: ibpsa-germany.org
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Digitalization in the Construction SectorTwo Challenges
Change in Process
More information at different level of details available, thus: decisions canbe made earlier and more substantiated
Current business models (e.g. variations) will be overcome by new ones, thus: cooperation will change
Much innovation potential along the process
Interoperability of Stakeholders
Very many very small enterprises
Very many specialised tools and established tool chains
interfaces for exchange of data and information
Big open BIM required
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BIMiDBIM Referenzobjekt in Deutschland
Objective: Demonstration andEvaluation of the BIM method on two construction projects.
Approach: Analysis of applicationmethods, work organisation, useracceptability, contract design, etc.
Results:
Model based, integral design ismore efficient
prerequisite: early decision to useBIM and involvement of all parties
»BIM reference process«
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BIM-Reference-Building-ProcessHOAI Leistungsphase 3
© Fraunhofer IBP in Zusammenarbeit mit AEC3 Deutschland GmbH und Abstimmung mit AHO e.V.
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BIM-Reference-Building-ProcessHOAI Leistungsphase 3
© Fraunhofer IBP in Zusammenarbeit mit AEC3 Deutschland GmbH und Abstimmung mit AHO e.V.
Owner
Architect
Engineers
BIM-Manager
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BIM-Reference-Building-ProcessHOAI Leistungsphase 3
© Fraunhofer IBP in Zusammenarbeit mit AEC3 Deutschland GmbH und Abstimmung mit AHO e.V.
Quality Control
Design CoordinationCommunication
BIM ExecutionPlan
CompletenessChecking
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actors tools figures
Energy demand
LCA/LCC
Daylight
Moisture mgmt.
Air quality
IBP 18599
IBP WUFI®
IBP VEPZO
IBP Generis
DIALux
owner
architect
planner
engineer
Ideal Planning Process
Proof anddocumentation
BIM
BIM as central information source
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Novel approach combines existing solutionsIBP:Connect
Smart service for handling complex information flow in planning, construction and operation
Changing multi-disciplinary project teams with specialized tools and expert knowledge
Efficient information management for integrated planning and optimization
Combination of disciplines, F&E services and tools
Data foundation for prediction of operations phase of building
Systems behaviour modeling and simulation
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IBP:Connect Platform
Information access via Linked Data Space
Data representing construction, materials, system operations, space usage
Association of differenttypes of content
Functional elements
Physical and technical parameters
Standard and default values
Traceability of simulation results
Key performance indicator assessment
Building Design Data Space
Tool
BIM Tool
Empirical Data Akquisition
Integrated Performance Assessment
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IBP:Connect example IBP:18599
Specification of input dat
Formatting and quality of data
Model View Definition (MVD)
Database interface
(Neuberg, Rank, Ekkerlein; 2001)
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Interoperability for building performance simulation
Information Delivery Manual (IDM) defining interactions e.g.
Conductive heat loss
Heating energy / Primary energy demand
Ventilation
Thermal comfort / Illumination analysis
Fire protection
…
Export Import
SimulationModel
BIMDomainModel
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BIM Projects EnEff-BIM / IEA EBC Annex 60
Data conversion from BIM to Modelica language
Building energy performance simulation
Methods for further analysis and exchange of BIM data
Co-Simulation and workflow automation
Validation and demonstration projects at the levels of building, districts and systems operation
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FMoperation
model
New builtdesign model
stockstockmodel
implementation
as-is-model
Modification
Retrofitmodel
ConnectivityConstructio
n 4.0
DemolitionRecycling,
LCA
Central data model
Vision of the digital building twin