We aimed to create a building plan with a center atrium that would become スポーツ ベット new symbol of communication and collaboration. Using computational design, we explored スポーツ ベット new possibility of an active atrium that encourages collaboration between tenants and guides bright natural light to スポーツ ベット new interior.
MiCHi no Terrace Toyosu MEBKS Toyosu
Sustainable Architecture: office space that coexists with changing needs
In continuously evolving times, スポーツ ベット new sites and functions that are required by architecture and space will change from moment to moment. This is an office building that responds to and accepts such changes. Introducing スポーツ ベット new digital design of an atrium space that illustrates "human- and environmentally-friendly architecture."
- Site
- 6-4 Toyosu, Koto-ku, Tokyo
- Total floor area
- Approx. 88,000 sqm (Office Building)
- No of floors
- 12 floors above ground
- Structure
- S structure (CFT / mid-story seismic isolation)
- Stage
- Completed (2021)
＞ Japan's first urban rest stop (roadside station), “Toyosu MiCHi Station”＞ Tenant recruitment site
Create an Engaging
Collaboration Atrium
Using Computational Design
Core placementAllowing for sight lines topass through
Floor plan of スポーツ ベット new central part of スポーツ ベット new building
Distributed island core allowing for sight lines transmittance
スポーツ ベット new layout is such that スポーツ ベット new sight lines can reach スポーツ ベット new edges of スポーツ ベット new workplace. We aimed to create a space that induces communication via high visibility across スポーツ ベット new atrium from anywhere in スポーツ ベット new office.
Place distributed island cores in large-scale plan offices
Study of core placement "types"
We compared スポーツ ベット new line-of-sight transmittance between tenants for スポーツ ベット new center core type and スポーツ ベット new distributed core type, which are typical for big plate offices. Comparing スポーツ ベット new line-of-sight through スポーツ ベット new central atrium, we found that スポーツ ベット new center core type has a line-of-sight transmittance of 24%, while スポーツ ベット new dispersed type has a line-of-sight of 54%. Therefore, we adopted スポーツ ベット new distributed core type for an office that encourages communication.
Graphing and comparing スポーツ ベット new rate of transmittance of sight lines between スポーツ ベット new center core type (left) and スポーツ ベット new distributed core type (right)
Study of core placement considering スポーツ ベット new daylighting of スポーツ ベット new workplace
When we simulated スポーツ ベット new daylight illuminance of a distributed core, スポーツ ベット new core was placed to allow for a workplace with daylight. Therefore, one span on スポーツ ベット new outer periphery incorporates in daylight by moving スポーツ ベット new core away, reduces lighting energy, and provides a view and comfort.
Comparison of illuminance by core placement (noon on スポーツ ベット new winter solstice)
Study of core placement considering スポーツ ベット new maximization of sight lines
In スポーツ ベット new initial distributed core type, there was a portion of スポーツ ベット new plan that became a "valley," where スポーツ ベット new tenant across スポーツ ベット new atrium could not be seen at all. Therefore, we created and studied more than 10,000 proposals using スポーツ ベット new core placement as a parameter. From those proposals, we used Shimz Explorer1 to select a core layout that allows スポーツ ベット new tenants to see each other from any angle.
1 Shimz Explorer: A tool for narrowing down2 スポーツ ベット new optimum solution using スポーツ ベット new Brute Force Method. (Developed in cooperation with: Thornton Tomasetti / CORE Studio, Algorithm Design Lab) 2 A method of narrowing down スポーツ ベット new solution by setting multiple target values from スポーツ ベット new vast number of parametrically generated possibilities.
スポーツ ベット new part that becomes a "valley" where スポーツ ベット new opposite tenant cannot be seen at all (left) and スポーツ ベット new improved plan by studying スポーツ ベット new position of スポーツ ベット new core (right)
Using Shimz Explorer, narrow down スポーツ ベット new core placement that allows for スポーツ ベット new maximum sight lines
An AtriumGuiding natural light
Skylight at top of スポーツ ベット new atrium
Realization of an atrium full of light
スポーツ ベット new atrium placed in スポーツ ベット new center of スポーツ ベット new plan is スポーツ ベット new key to realizing one of スポーツ ベット new concepts of this office, "WELLNESS - taking in スポーツ ベット new external environment, feeling スポーツ ベット new rhythm of light and wind, and creating a healthy work place." We approached this atrium with a computational design to bring in natural light and create a space for communication, collaboration and relaxation.
Ground floor entrance
スポーツ ベット new goal is to deliver natural light to スポーツ ベット new bottom floor of スポーツ ベット new atrium. However, direct sunlight shining on スポーツ ベット new interior will increase スポーツ ベット new air conditioning load. Therefore, we decided to use Grasshopper to find スポーツ ベット new best way to capture as much indirect light and reflected light as possible and cut off スポーツ ベット new direct light that has a large heat load.
Narrow down スポーツ ベット new shape by
parameters for refinement
At スポーツ ベット new beginning of スポーツ ベット new study, we aimed for a skylight shape that maximizes スポーツ ベット new internal illuminance by cutting スポーツ ベット new direct light with a single curved surface. However, we soon realized that there is a limit to スポーツ ベット new internal illuminance that can be supplied with one surface. To increase スポーツ ベット new internal illuminance, we gradually set detailed parameters for スポーツ ベット new number of openings, スポーツ ベット new height of each opening, and スポーツ ベット new ridgeline of スポーツ ベット new openings, to narrow down スポーツ ベット new shape.
One roof surface generated to block direct light (left) and Internal illuminance simulation on this roof (right)
Study of スポーツ ベット new number of roofs based on internal illuminance simulation
Using assumptions from スポーツ ベット new simulation results, スポーツ ベット new heights of スポーツ ベット new peaks of スポーツ ベット new four saw-tooth roofs were set as parameters and スポーツ ベット new height of each opening was changed, and then スポーツ ベット new illuminance at スポーツ ベット new bottom of スポーツ ベット new atrium was calculated and analyzed. Based on スポーツ ベット new analysis results, we used a genetic algorithm3 to optimize more than 600 combinations and found スポーツ ベット new opening heights of スポーツ ベット new skylights that guides スポーツ ベット new most light into スポーツ ベット new atrium.
3 Genetic algorithm: One of スポーツ ベット new optimization methods that imitates スポーツ ベット new evolution of living organisms. In this project, analysis was performed using Galapagos, an optimization component that comes standard with Grasshopper.
Relationship between skylight aperture height and parameters
Study process of internal illuminance optimization
Next, we searched for スポーツ ベット new ridge shape of スポーツ ベット new skylight that delivered スポーツ ベット new reflected light as far down スポーツ ベット new atrium as possible. By fixing スポーツ ベット new aperture height and using スポーツ ベット new ridge shape of each surface as a parameter, we confirmed スポーツ ベット new trajectory of light falling into スポーツ ベット new atrium with a tool that visualized スポーツ ベット new destination of reflected light, that was color-coded according to スポーツ ベット new number of reflections. Based on this result, スポーツ ベット new optimization simulation was performed again, and スポーツ ベット new ideal skylight shape was derived from about 400,000 options.
Study process of reflected light simulation
Optimal shape of スポーツ ベット new skylights
Study process of reflected light simulation
Optimal shape of スポーツ ベット new skylights
Compared to before adjusting スポーツ ベット new height and ridgeline of スポーツ ベット new opening, we were able to attain an annual average illuminance that is about twice as bright on スポーツ ベット new entrance floor, which is approximately 60m below スポーツ ベット new roof.
Comparison of atrium illuminance due to スポーツ ベット new difference in skylight shape
Sharing スポーツ ベット new digital data and creating スポーツ ベット new sky lights
スポーツ ベット new structure was determined by using Grasshopper to verify a rational truss arrangement with minimal members and joints, pulling from スポーツ ベット new surface data of スポーツ ベット new free-form surface. This surface was スポーツ ベット new result of スポーツ ベット new efforts to maximize スポーツ ベット new brightness of スポーツ ベット new atrium. スポーツ ベット new 3D data was then shared with スポーツ ベット new construction team and スポーツ ベット new architectural design, structural, on-site, and manufacturing4 teams collaborated on meetings, design drawings and fabrication drawings.
4 Truss verification cooperation: Tomoe Corporation; finishing material verification cooperation: Sanko Metal Industrial Co., Ltd.
Sharing digital data (design, on-site, manufacturer)
Skylight structure construction using detailed 3D model
Skylight roof mock-up
Skylight structure construction using detailed 3D model
Skylight roof mock-up
Panelization for complicated geometry
For スポーツ ベット new side panels of スポーツ ベット new atrium, we aimed for a “crevasse5”-like shape that guides スポーツ ベット new light from スポーツ ベット new skylights and reflects it towards スポーツ ベット new bottom. Therefore, スポーツ ベット new panels have a polyhedron shape, and スポーツ ベット new design was determined while adjusting スポーツ ベット new height and protrusion of スポーツ ベット new ridgeline with Rhino + Grasshopper. スポーツ ベット new data is handed over to スポーツ ベット new builder and linked to スポーツ ベット new individual detailed drawing by スポーツ ベット new manufacturer.
5 Cracks formed in glaciers, etc.
Adjust panel geometry with Grasshopper
Design study using a model
Adjust panel geometry with Grasshopper
Design study using a model
Panel geometry with prominent shadows that guide スポーツ ベット new light from スポーツ ベット new skylights
Architectural Design
Hiroshi Imai
Structural Design
Hiroyuki Kuboyama
Architectural Design
Tsuyoshi Kato
Architectural Design
Kenji Yatsu
Architectural Design
Moe Takeuchi
Architectural Design
Tomohiro Kakinaka
Structural Design
Yuya Nashimoto
By using computational design, we were able to convincingly propose non-uniform and complex designs that may at first glance seem irrational. When programming, we had a difficult time digging into "what is スポーツ ベット new problem? what should be prioritized?" and parameterizing it. Since スポーツ ベット new study process is traceable through visualization programming, we feel that it was useful for sharing with people in other fields and for collaborating with many people.
From スポーツ ベット new top left
Architectural Design Hiroshi Imai
Structural Design Hiroyuki Kuboyama
Architectural Design Tsuyoshi Kato
From スポーツ ベット new bottom left
Architectural Design Kenji Yatsu
Architectural Design Moe Takeuchi
Architectural Design Tomohiro Kakinaka
Structural Design Yuya Nashimoto
By using computational design, we were able to convincingly propose non-uniform and complex designs that may at first glance seem irrational. When programming, we had a difficult time digging into "what is スポーツ ベット new problem? what should be prioritized?" and parameterizing it. Since スポーツ ベット new study process is traceable through visualization programming, we feel that it was useful for sharing with people in other fields and for collaborating with many people.
