IFC ALIGNMENT. Common resource for road and rail construction, bridges, tunnels First IFC extension project to address infrastructure works

Transcription

1 IFC ALIGNMENT Common resource for road and rail construction, bridges, tunnels First IFC extension project to address infrastructure works

2 Alignment and linear referencing as common resource Alignment IFC Alignment as common resource Road Design IFC for Roads Bridge Design IFC for Bridge Tunnel Modeling IFC ShieldTunnel

3 Alignment standardization approach Combine traditional 2D and new 3D approach Horizontal alignment implicit 3D geometry Vertical alignment Cross-section profile established methods reduction of design complexity mature 2D design & Standards available (LandXML, OKSTRA, )

4 Project sponsors and project team Sponsors Team members Thomas Liebich, bsi / AEC3 team leader Tim Chipman, bsi/constructivity André Borrmann, TU Munich Julian Amann, TU Munich Eric Lebegue, V-Con/CSTB Mathieu Marache, V-Con/CSTB Paul Scarponcini, OGC

5 Expert panel established expert panel 22 domain experts participating 11 software experts participating 13 nations represented

6 Project schedule

7 Identify use cases by process analysis Preliminary Design Tender Detailed Design Construction Operation Asset manager New Infrastructure Project Operation and maintenance 0 Project manager Project intent and constraints Road Design review Facility Design review Prepare Tender Design review 1 2 3a 15 6 f Roadway / railway design engineers Preliminary roadway / railway design Detailed design 4 5 b e Construction company Cost calculation Tender model Construction model Construction (Surveying, Machine Control) d c Other design engineers Preliminary facility design (bridge, tunnel, retaining walls, etc.) Cost calculation Detailed facility design Process map for alignment information exchanges

8 Exchange scenarios elaborated

9 Main breakdown of alignment information structure Alignment horizontal alignment vertical alignment associated requirement definitions horizontal alignment segment vertical alignment segment 3D Alignment

10 Development of conceptual model joint development with OGC specification in UML documentation for expert panel additional work for IFC 1. realization as IFC extension in EXPRESS in XML Schema 2. define IFC exchange (MVD) as filter and rules in mvdxml as online documentation (html5) 3. software prototypes free software tools and viewer commercial software interfaces

11 Conceptual schema: Alignment

12 Conceptual schema: horizontal and vertical segments

13 IFC Extension 1 extension of IfcProductExtension IfcAlignment as positioning element along with grid (for buildings)

14 IFC Extension 2 horizontal alignment segments line circular arc clothoid Line Start point Direction Length Clothoid Start point Direction Length Radius Constant Circular Arc Start point Direction Length Radius extension of IfcGeometryResource

15 IFC Extension 3 vertical alignment segments line circular arc parabola Parabola Start point Direction Length Constant Line Start point Direction Length Line Start point Direction Length extension of IfcGeometricConstraintResource

16 Data model validation with prototype implementations evebim Viewer - CSTB TUM Open Infra Platform 2014 IFC4 + Alignment

17 Validation tables (OIP Excel export)

18 IFC-Alignment demo viewer: OIP Export IFC & Excel 3D horizontal view Project view Properties view Vertical profile

19 IFC-Alignment demo viewer: evebim Project geolocalization Project view 3D horizontal view Properties view Vertical profile STEP physical file view