Merri Creek sound barrier rizal ambotang
INTERIM DESIGN CRITIQUES
3D voronoi technique produces “monolithic” structure who is the beneficiary of the design? sound analysis is complex
DESIGN RESPONSES
2D voronoi patterning technique derived frosite response protecting the local fauna - the birds, aesthetic structure forlocal users using existing technology
DESIGN OBJECTIVES
reducing the sound level from the traffic generated from the bridge - protecting the localised fauna preserving some visual aspect of the site - for human users of merri creek trail
CONCEPT
sound , noise sinusoidal plane waves, combination of sine waves sine wave as basis of form finding
FORM PRECEDENCE
Japan Pavilion EXPO 2000, by Shigeru Ban in Hannover, Germany
MATHEMATICAL RECIPE Sine wave y(t) = A sin (2 π ft+ φ) Barrel vault
x=v y=cos (u) z = sin (u) {(u,v) | 0 ≤ u ≥ π, 0 ≤ v ≥ nπ }
x=v y=cos (u) z = sin (u) {(u,v) | 0 ≤ u ≥ π, 0 ≤ v ≥ 5π }
x=v y=(2 + sin (v) )cos (u) z = (2 + sin (v) )sin (u) {(u,v) | 0 ≤ u ≥ π, 0 ≤ v ≥ 5π }
x=v y=(2 + sin (v)/3 )cos (u) z = (2 + sin (v) /3)sin (u) {(u,v) | 0 ≤ u ≥ π, 0 ≤ v ≥ 5π }
ARCHITECTURAL QUALITIES
x=v
y=(2 + sin (v)/3 )cos (u)
z = (2 + sin (v) /3)sin (u)
{(u,v) | 0 ≤ u ≥ π, 0 ≤ v ≥ 5π }
controls radius of tube
controls the curvature
DESIGN VARIATION - SITE RESPONSE
Traffic
Bird colony
transparent for view
x= u+ v
y=(2 + sin (u+v)/4 )cos (u) z = (2 + sin (v) /4)sin (u)
{(u,v) | 0 ≤ u ≥ π, 0 ≤ v ≥ 5π }
FORM FOR PATTERN
Sound diffusion - site response Pattern making 2D voronoi with cull pattern
Pattern after attractor curve influence Traffic influence as curve attractor
2D voronoi with cull pattern
sinusoidal barrel vault
Voronoi barrel vault
Extruded to create cells Isometric view 2D pattern on surface
71m 8m
16m
Sound diffusion
Dissipated reflected waves
Noise waves
plan view
elevation entrance view
elevation view
Renderings
Design in context Design in context
Tectonic elements
Voronoi cells connection/ joints
Diffuser panel in voronoi cell enclosure
Tectonic - Diffuser Panels
Hot rolled steel shoes lift cells above ground
Bolt connection to platform
Bolt connection to glulam member
Plywood/glulam laminated timber
Sound deadening wave diffuser
Tectonic - voronoi cells
Bolted cold form brackets connects all adjacent glulam panels
Tectonic - Diffuser Panels - Prototype
Tectonic - Diffuser Panels - Prototype
Reflection
1. Voronoi technique is not the most efficient space making technique; computer intensive ,irregular pattern and monolithic outcome 2. I would look at other technique such as packing and tiling which would fulfill my design intent much more efficiently and have more regular shapes for ease in fabrication. 3. The voronoi pattern have too many irreguar shape to economically fabricate the entire project. 4. I realised complex shapes generated by parametric techniques requires more efforts and analysis in fabrication as the tectonic elements have to cater for the unusual shapes.