Intelligent Services and Tools for Concurrent EngineeringProposal number : IST - 1999 - 11508

AEC3

Structural Information Model

Dr. Thomas LiebichJeffrey Wix

Major IAI projects - structural

• proposed structural model• realized in IFC2x2 release

– ST2 reinforced concrete

– ST3 precast concrete

– ST4 steel constructionstructural analysis*)

* based on ISTforCEstructural model

IFC2xST-4Steel

Extension

StructuralEngineer

CheckingEngineer

Detailing(Steel)

Fabrication(Steel)

Construction

Manager CostCalculation

ArchitectFacility

Manager

other disciplines

ProjectManager

HVACDesigner*

ST-2/3RC

Extension

CheckingEngineer

Detailing(RC)

Fabrication(RC)

Construction

ManagerCostCalculation

ST-4analysis

Structural analysis

• material independent definition of the structural analysis model, including– structural members, boundary conditions, connections– supports, loads, load combinations

ST-4

Sample usage scenario

• sharing of structural models– mechanical system and

actions as input information– can be used by several

calculation software systems– can be used for getting

online and rental services for complex calculations

– can be used to return results of the structural calculations

• enables specializations and involving external experts

Actors: Structural engineers, checking engineers

Application Objects

- Profile specification1

- Material1

- Structural elements1: - Linear - Planar- Connections between elements1

- Supports1

- Actions2

- Action Combinations2

StructuralAnalysis

StructuralAnalysis

1) Level 1: Mechanical system2) Level 2: Actions

Actors: Structural engineers, checking engineers