Generative Design and Parametric Modeling

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Generative Design and Parametric Modeling

a

dvanced

c

omputational

m

odeling

Allen LaSala – Dallas, Texas Thornton Tomasetti

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The Associated General Contractors of America (AGC) is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion are available on request.

This program is registered with the AIA/CES for continuing professional education. As such it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or

manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

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Copyright

This presentation and the materials provided are protected by U.S. and International

copyright laws. Reproduction, distribution, display and use of the presentation or materials without written permission is prohibited.

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Course Description

Thornton Tomasetti (TT) is an internationally recognized engineering company. TT’s Advanced Computational Modeling (ACM) team works at the forefront of computation practices. TT utilizes a wide range of commercially available as well as customized digital tools and automation procedures to model, simulate, analyze, and optimize engineering projects of various scales worldwide. By creating a collaborative dialog with the designer at the conceptual phase, the architectural, engineering & fabrication models can be developed simultaneously from the same geometric reference model, allowing a holistic design

process.

Using a number of recent examples, this presentation will showcase how computational tools can be tailored to greatly enhance the collaboration process between all parties involved in large-scale international construction projects. One example would be the 65,000 seat Basrah Main Stadium, designed by 360 Architecture. To realize this project successfully, software such as Digital Project and Tekla were automated to reduce the fabrication process of the 100 foot long GFRP skin panels by more than 18 months, while creating a BIM model that served the project team through all project phases, from concept design to digital fabrication.

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Learning Objectives

At the end of this presentation, attendees will be able to:

 Attendees will be able to summarize Integrated design exploration

utilizing advanced 'digital engines'.

 Attendees will be able to illustrate the digital fabrication approach from

early design concepts through to production.

 Attendees will be able to identify integrated form finding approach for

freeform structures using custom automization tools.

 Attendees will be able to identify interlinked architectural and

engineering models for advanced analysis.

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Generative Modeling

Integrated Project Delivery

Graphic by HOK

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West 57

th

_{St. Residential}

Bjarke Ingels Group, Denmark

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Automated Information Exchange

W57th St

Scheme 1: June 15th

15 Floors

Scheme 2: Aug 12th

20 Floors

file

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integrat

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Integrated Analysis

VTB Arena, Moscow

Structural Model in Rhino

Generated from Architect’s floor plans and elevation data using Grasshopper

Length Axis 1(mm)

Length Axis 2

(mm) Area (mm2) round a1 round a2 range a1 count a1 range a2 count a2 Axis 1 Axis 2

0 10992.00 7238.41 37226000.00 11000.00 7000.00 9000.00 2.00 5500.00 2.00 min 9183.83 5729.17 1 11586.00 7604.86 40617000.00 11500.00 7500.00 9500.00 12.00 6000.00 1256.00 max 20748.00 14380.00 2 12212.00 7909.85 44164000.00 12000.00 8000.00 10000.00 18.00 6500.00 187.00 3 12794.00 8077.95 47266000.00 13000.00 8000.00 10500.00 41.00 7000.00 120.00 4 13335.00 8033.73 49528000.00 13500.00 8000.00 11000.00 51.00 7500.00 77.00 5 13868.00 7917.84 51462000.00 14000.00 8000.00 11500.00 63.00 8000.00 57.00 6 14388.00 7750.29 52956000.00 14500.00 8000.00 12000.00 61.00 8500.00 29.00 7 14897.00 7544.69 54001000.00 15000.00 7500.00 12500.00 59.00 9000.00 35.00 8 15400.00 7315.29 54641000.00 15500.00 7500.00 13000.00 58.00 9500.00 23.00 9 15887.00 7131.91 55258000.00 16000.00 7000.00 13500.00 81.00 10000.00 31.00 10 16339.00 6885.61 54882000.00 16500.00 7000.00 14000.00 75.00 10500.00 20.00 Angle A Angle B Angle A / Angle

B Angle Sum Max Deviation Dist (eval srf)

0 116.212661 113.173502 1.02685398 360 5.336134 1 117.61059 112.826751 1.042399865 360 0.871038 2 118.691855 113.594831 1.044870211 360 1.130024 3 120.75759 114.371515 1.055836237 360 9.984354 4 123.56208 116.109558 1.064185259 360 14.836463 5 126.267276 118.296062 1.067383596 360 19.303195 6 128.966301 120.701635 1.068471865 360 23.444554 7 131.723265 123.194604 1.069229177 360 27.788725 8 134.365394 125.864944 1.067536279 360 31.773613 9 136.036988 128.778648 1.056362915 360 10.296549 10 135.124833 135.064414 1.000447335 360 302.36649

Integrated Analysis

VTB Arena, Moscow

From Sap to Revit

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Integrated Analysis

VTB Arena, Moscow

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Parametric Optimization

Cold Bending Explained

Tower Façade Optimization – original surface

“Twist” offset < D/175 ?

Torsion in corners of edge spacer

Deflected edge shape depends on sub-structure stiffness, shape is not necessarily linear = impact on air-tightness joints.

Primary seal is main element of service-ability, seal is stressed by overall twist.

Iso-Glass Force to “press into form”

D

₂ permanently: water tight? air tight? Stresses in panes usually rather small!

D

₁

D = (D

₁

+D

₂

)/2

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Parametric Optimization

Glass Façade Panelization

Tower Façade Optimization – optimized surface

Out of plane warpage shown in percent

Max warpage allowed: 0.57%

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Parametric Optimization

Glass Façade Panelization

Tower Façade Optimization – optimized surface

Out of plane warpage shown in percent

Max warpage allowed: 0.57%

Out of plane warpage shown in percent

Max warpage allowed: 0.57%

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Parametric Optimization

Glass Façade Panelization

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Parametric Optimization

Glass Façade Panelization

Wuhan Tower

Adrian Smith + Gordon Gill

Out of plane warpage shown in percent

Max warpage allowed: 0.57%

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Parametric Optimization

Glass Façade Panelization

Tower Façade Optimization

Study to evaluate warpage,

slope and pitch of the current

configuration of façade panels,

and to optimize for

constructability and cost

efficiency.

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Parametric Optimization

Glass Façade Panelization

Tower Façade Optimization

Out of plane warpage shown in percent

Max warpage allowed: 0.57%

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Parametrical Optimization

Rationalizing The Building Geometry

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Parametrical Optimization

Rationalizing The Building Geometry

Tower Façade Optimization

NOMINAL DISPACEMENT FROM ORIGINAL CURVE

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R&D

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Free Library Philadelphia

 Building Structures

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Building Sustainability

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Building Sustainability

Embodied Carbon Calculator

Free Library Philadelphia

Material Embodied Energy (MJ/kg) Embodied Carbon (kg CO2e/kg) Concrete 1.04 0.07 Steel 20.1 1.46 Aluminum 155.00 9.16 Glass 15.00 0.91 Timber 10.00 0.72

Structural / Facade initial Embodied

Energy represents 50% or more of

the built project and 20+ % of the

total embodied energy for the life of

the building.

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toget

her

bringing it

all

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Change from ETFE to Polycarbonate

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Bringing it all together

Basrah 65K Skin Design

Catia Model

Reduce number of molds from 10 to 5

Movemen t Joints

End

zone

Side Line

A B C D E

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Change from ETFE to Polycarbonate

Parametric Panel Informs Connection Brackets

Geometry data output to Excel for bracket design coordination and cost estimation of GRP panel