1
1.2
Exhibition Hall Proposal For Single-storey Building Typology B : External Structure
This Structure System is fully integrated with the glazing and roof form as a homogeneous design. The position and size of vertical support Arrange are dependent of the floor plan outline and the Columns along undulating roof curvature. The optimization Glazing Line process maximize its spanning capacity and the visual connection between internal and external. Desired Position & No. of column
Create Support point from Roof to Columns
Generate Roof Surface from point cloud/ curve network
Create Curves connecting the vertices and ground
Create ‘Ribs’ to transfer loads
Height Profile Along Building Boundary
Vertices in XYZ coordinate / Contour Line of Roof Form
Rib Profile (Depth & Width)
Structural Analysis& Optimization
Image Credits: (Left) The Serpentine Sackler Gallery / Zaha Hadid Architects, 2013 https://www.archdaily.com/433507/the-serpentine-sackler-gallery-zaha-hadid-architects (Right) Meiso no Mori Municipal Funeral Hall / Toyo Ito ,2005 https://architizer.com/blog/inspiration/stories/architectural-details-toyo-ito
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1
1.1
Exhibition Hall Proposal For Multi-storey Building Typology C : Facade Structure
This Facade Structure System is developed in a sheared diagrid system, where the tilted angle and column spacing are the main parameters of performance-based design. The overlay subframing system takes up all facade loading and reinforces the tensions between each floor slab.
Arrange Root Columns along Building Footprint
Create Branch by using plane rotation
Tween Branch curves into Curve Network
‘3D-Offset’ and take the copy as Top Layer
Connect the nodes together
Curve Divider/ Curve Parameters
Rotated Plane with respect to xy plane
Density/ Spacing of Bottom Layer Strips
Transformation Vector with respect to Bottom Layer
Structural Analysis& Optimization
Image Credits: (Left) SunnyHills at Minami-Aoyama / Kengo Kuma & Associates, 2013 https://www.archdaily.com/484981/sunnyhills-at-minami-aoyama-kengo-kuma-and-associates (Right) Sculptural Pavilion in Paris / Kengo Kuma, 2015 https://www.archdaily.com/776541/kengo-kuma-designs-sculptural-pavilion-in-paris
ABPL90123_Advanced Computational Design 2021_SM1
Assignment 2 Re-imaging the Universal Space
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2
2.2
Proposal Development For Multi-storey Building Flowchart of computational design workflow
Reference the base 40m x 40m surface as building base
Design Constraints & Constants
Create Floor Slab at corresponding levels
Split Slab Edge into four list according to its Elevation
Offset Slab Edge inward as Structural Column Grid
Divide first line into even segments by no. of column
Create points on line as the position of Column Trunk
Extrude Points into Lines as Column Trunks
Create a Ref XY-Plane at Column Trunks Top Ends
Rotate the plane along its local Y-axis of its Trunk line
Spacing Between Glazing Line & S. Grid ( Δ )
No. of column along each side (n)
Position on Structural Grid ( ti )
Column Trunks Height ( hi )
Tilted Angle A (α)
In Clockwise Direction
Tilted Angle B (β)
In Anticlockwise Direction
Intersect with the slab level to obtain contact points
Join intersected points to Trunks Top Ends as Branches
Assemble Model as Y-Columns
Apply to other elevation with same workflow
Extrude with corresponding uniform profile
Y-Columns
Design Variables for Optimisation
Geometries for Analysis Setup
ABPL90123_Advanced Computational Design 2021_SM1
Categorise as C_Trunk & C_Branch
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2
2.2
Proposal Development For Multi-storey Building Flowchart of computational design workflow
Create a Square as Core at the Slab Centre
Extrude Vertexs as Core Columns
Filter out the Ground Floor Slab Edge
Core Dimension ( c )
Loft Edges as Glazing Surface
Orient Tilted Plane to the center of Glazing Surface
Contour and Intersect with Glazing Surface as Mullion Grid
‘3D-Shift’ as Facade Screen along Glazing Surface Normal
Tilted Angle B (α)
Tilted Angle B (β)
Mullion/ Facade Grid Spacing ( m )
Transformation Vector wrt. Glazing Srf ( v )
Assemble Model as Facade
Apply to other elevation with same workflow
Connect All Nodes as Facade Joinery
Core Columns
Categorise as C_Core Design Constraints & Constants
Extrude with uniform profile
Mullion & Facade Screen
Design Variables for Optimisation
Geometries for Analysis Setup
ABPL90123_Advanced Computational Design 2021_SM1
Categorise as F_Mullion, F_Screen & F_Connector
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2
2.2
Proposal Development For Multi-storey Building Flowchart of computational design workflow
Formulate Slab into Beam Network (Srf to Mesh)
Extract Edges As Beams
Beam Spacing/ Structure Grid (b)
Design Variables for Optimisation
Geometries for Analysis Setup
Create Ref. Line at all Y-Columns Intersection
Search for the closest point among nodes of Mullions
Connect All Nodes as C-F Joinery
Apply to other elevation with same workflow
Extrude with uniform profile
Transformation Vector wrt. Glazing Srf ( v ) Columns-To-Facade Connectors
Slab & Beams
Design Constraints & Constants
Extract Assembled Y-Columns
Categorise as S_Mid Floor, S_Roof Beams & S_Floor Beams
C_Core, C_Trunk & C_Branch
Categorise as C-F Connector
All Geometries for Analysis Setup
F_Mullion, F_Screen & F_Connector
Rebuild, Shatter all the geometry intersection such that all lines are interconnected for load transfer
Assign Supports, Loads, Material Selection, Profile Cross Section to corresponding components
Send the Assembled Model for FEM Analysis and Optimisation for Max Displacement in the Model
Loop & Feedback the Model with new set of Variables for iteration with a better Fitness Performance
Refer to the Details in the following Sections
Structural Analysis & Optimisation
ABPL90123_Advanced Computational Design 2021_SM1
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3.1
Performance-based Design Proposal Optimisation Design Variables & Constraints
2m
h1
t1
t3
h3
ti є [ 0.1 , 0.9 ]
Variable 1: Column Trunks Position on Structural Grid (Curve Parameters)
hi є [ 3.5 , 7.5 ]
Variable 2: Column Trunks Height
α
β α
Core & 20m Circulation
Facade Structure
Planning Parameters: β
α є [ 0.30π , 0.45π ]
Spacing Between Glazing Line & S. Grid ( Δ ) = 1m No. of column along each side ( n ) = 3 Mullion/Facade Grid Spacing ( m ) = 2m Transformation Vector wrt. Glazing Srf ( v ) = (0.5, 0.8, 1) m β є [ 0.15π , 0.30π ]
Variable 4: Tilted Angle B
ABPL90123_Advanced Computational Design 2021_SM1
6m
Building Parameters: Ground Floor & Roof Dimension = 40m x 40m Mid Floor Dimension = 39m x 39m Floor-to-Floor Height = 4m Number of Floor = 6 Floors
β α
Variable 3: Tilted Angle A
Exhibition Space
h2
t2
15m
Core Dimension ( c ) = 6m x 6m Beam Spacing/ Structure Grid ( b ) = 1.6m Constraints & Constants
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3.2
Performance-based Design Proposal Optimisation FEM Analysis Setup for Structural Performance
Material S_Roof Beams
Ground Supports
C_Trunk
S_Floor Beams
Loads
Material C_Core
Steel S235
Gravity Load Live Loads: 2kN/m2
Conditions: (Tx ,Ty ,Tz ) & (Rx ,Ry ,Rz )
C_Branch Vertical Members (Core & Columns)
Horizontal Members (Beams, Slab & Roof)
Cross Section
Sqaurish-Section Height & Width: 50cm Reinforced Steel Upper/ Lower THK: 0.4cm Sqaurish-Section Height & Width: 30cm Upper/ Lower THK: 0.4cm
Cross Section I-Section Height: 30cm Upper/ Lower Width: 20cm Upper/ Lower THK: 0.8cm Web THK: 0.5cm
Material
Cross Section
Wood
Sqaurish-Section Height & Width: 10cm Upper/ Lower THK: 0.4cm
F_Mullion F_Screen F_Connector Facade System
ABPL90123_Advanced Computational Design 2021_SM1
Assembled Model
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3.3
Performance-based Design Proposal Optimisation Optimisation Process and Parameters
(cm)
The Optimization Process is carried out with the following parameter setting.
11
Optimization Parameters Max Stagnant = 50 Population = 50 Initial Boost = 2% Maintain = 5% Inbreeding = 75%
9 Max Displacement
Fitness Parameters Objectives: Maximum Displacement [Minimize] Target Generation to be completed= 10
10
8
7
6
5 0
2
4
6
8
10
Generation
ABPL90123_Advanced Computational Design 2021_SM1
Assignment 2 Re-imaging the Universal Space
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(cm) 11
10
3.4
Performance-based Design Proposal Optimisation Synthesis on Optimisation Process
From the Observation of the Result, the maximum displacement happens at the corner cantilever slab edge that are far away from its closest column support. The fitness performance has been improved through generations as those area colours shifted from reddish-orange to greenish yellow.
Evolutionary Process Gen 0, Iter 45
Max Displacement: 5.94cm
Gen 2, Iter 6
Max Displacement: 6.17cm
Gen 4, Iter 18
Max Displacement: 5.88cm
Gen 6, Iter 45
Max Displacement: 5.68cm
9 Max Displacement
3
8 Worst Result per Generation
7
6 Best Result per Generation 5 0
2
4
6
8
10
Generation
Gen 8, Iter 19
Max Displacement: 5.37cm
Gen 10, Iter 5
Max Displacement: 5.34cm Final Optimized Result
ABPL90123_Advanced Computational Design 2021_SM1
Assignment 2 Re-imaging the Universal Space
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