Parametric Analysis and Design Engine for Tall Building Structures

Transcription

1 Parametric Analysis and Design Engine for Tall Building Structures Goman HO, Arup Fellow Structural Engineering: Backbone of Built Environment, 31 May 2018, Siam Kempinski Hotel 2 Mahanakhon (304m) 1

2 3 From 2D to 2D CAD 4 2

3 From 2D to 3D 5 Architectural Vs BIM Vs Structural Models (With courtesy of Studio PeiZhu) 6 3

4 From 2D to 3D and BIM 7 Marina Bay Sands (2007) 2010 Winner Bentley Delivery Process Innovation Using BIM 8 4

5 Hong Kong Airport Midfield Development (2011) 2012 Winner Bentley BIM Innovation in Airports 2013 Winner Autodesk Hong Kong BIM Award 9 From 3D to 4D or xd 10 Hong Kong Sludge Treatment Facility 5

6 Buildings completed with computers Synchronised drawings Structure Building setting-out Streamlined shop drawings production 12 Taipei Pop Music Centre (2012) 6

7 Parametric Modelling Parametric Technology in Metal Stamping 15 7

8 Parametric Models 16 Geometry object defined by parameters and component 17 8

9 Building Objects 18 Structural Element Objects Mega column Mega Braces Transfer Trusses Core Beams Slabs 19 9

10 Bracing pattern can be changed by just updating some of the key parameters 20 Study Options for Bracing and Belt Trusses 21 10

11 Extracting of the story framing plan by scripts 23 Parametric Modeling and Computer Design Optimization (CDO)

12 Parametric modeling to generate different structure systems Column space as design variable 25 Virtual work analysis results for different schemes 26 12

13 Ensure Consistency & Rapid Design Changes 27 Results comparison and evaluation Member sections are controlled by lower boundary, such as strength, buckling. 250% 200% 150% cost client's Satisfaction Satisfaction/cost ratio Not feasible for concrete frame under limited beam depth. Large steel ratio required for SRC frame so cost increase sharply. 100% 50% 0% Best choice to balance the client s preference and structure cost. Client can make the decision if the cost is acceptable to them

14 Structural System- China Zun (528m) Observation Zone Crown Observation Zone Top Truss Zone 7 Corner Truss Zone 6 Zone 5 Belt Truss (7 in total) Zone 4 Office Zone 1 to 7 Mega-Brace Zone 3 Mega-Column Zone 2 Typical Floor Layout Zone 0 Lobby Reinforced Concrete Core Zone 0 Belt Truss Bottom Brace Zone 1 Zone 0 29 Varied Functions 30 14

15 Parametric Model Overview Examples of architect massing variations 31 Architectural/External Input Waist size Top dimension variation Parametric Model Overview Examples of architect massing variations Corner radius variation 32 Architectural/External Input 15

16 Beijing Z15 中国尊 (528m tall, 108 storeys, 7 storeys basement) ^ Tower radius & Slab meshing change ^ Façade clearance change ^ Tower waist change 33 The Column-line: Orientation Angle Larger Angle beneficial: - Larger stiffness adverse: - Larger façade-structure distance 34 16

17 Value Engineering Floor-by-floor Measure Minimise unfavourable area up to 8,700m 2 = 2 additional stories = 1 billion HK$ 35 Time Saving Time 854 Options Evaluated Traditional First Model Design Changes Parametric First Model Design Changes 36 17

18 Seismic Design Linear Models for Wind and Seismic, Push-over, Nonlinear Time History Analysis

19 Analysis and Design Engine (ADE)

20 Analysis and Design Engine (ADE) General layout drawings for plan and elevation; Linear model for code base design with graphical analysis results for visualization and presentation; Nonlinear keyword file for LS-Dyna analysis to ensure the structures will not collapse in severe earthquake (i.e. performance check); Connection geometry in IGES for Finite Element Processing including Preprocessing in generating meshing, analysis and post-processing. 3D connection shop drawings in X-Steel format for fabrication. Detailed section definition. More modules could be added. 41 Frameworks for Analysis and Design Engine (ADE) 42 20

21 Finite Element Model generated by ADE 43 FE analysis results after optimization 44 21

22 3D image and construction drawings generated by ADE 45 Detailed composite section definition by ADE 46 22

23 Erection of the Mega Column 47 Mega Column (11.5m x 5.2m) of 597m tall TJ

24 Successful Examples TJ m China Zun 528m 49 Acknowledgement Arup DTX Fund The design and construction guidelines for connections of composite structures

25 Thank You 5 1 goman.ho@arup.com