2020.02.17
R&D WORKS Vol. 12
CLT relocation and reconstruction structural system
A relocatable wooden structure made using CLT.
In recent years, the importance of using domestic timber has been reaffirmed, and there is a demand for the development of structures that expand the scope of their use. Amid such domestic needs, this project was constructed in Harumi, Tokyo, as a temporary building in the city center to promote the potential of CLT wooden structures both domestically and internationally. The building that appeared in Harumi consists of three buildings, including a pavilion building for holding outdoor events and an indoor exhibition building. It will be relocated to Maniwa City, Okayama Prefecture in the spring of 2021, after which it is planned to be used as a permanent structure. This time, Mitsubishi Jisho Design Sekkei pursued the possibilities of a movable wooden structure. With relocation in mind, ingenuity was put into the joints, creating a CLT forest-like building.
Using CLT panels for beams - Pavilion building
CLT (Cross Laminated Timber) is a laminated timber material made by laminating lumber with the direction of the fibers changed by 90 degrees each time. It is often used as a panel material for wall structures, but in this pavilion building, it was used as a beam. It looks like a forest with countless CLT panels attached to thin 200mm steel columns, but the overall structure is solved as a large gate-shaped frame. The 210mm thick parallelogram panels become thin beams connecting steel frames, and are connected in the x-axis and y-axis directions to form a frame (frame structure) as a whole. If you look at some of the columns, you will see that the panels are installed offset from one another, so they are coiled up towards the sky.
This project opened up the possibilities of CLT as beams, but also pursued another function: as a movable building. Each panel is connected to the steel frame with bolts, which makes it possible to disassemble and assemble the structure. Thin metal bases are inserted into the small edges of the panels and fixed with drift pins. These metal bases are then joined to the steel frame columns with high-strength bolts to complete the assembly.
Relocation of CLT wall structure – Indoor exhibition hall
The indoor exhibition hall was planned as a set with the pavilion building. We aimed for a floor plan that would allow the pavilion building to be seen at various points while touring the exhibits. This resulted in the triangular plan. The triangle is opened where it faces the pavilion to open up the line of sight. In places where it is necessary to block out light, such as projection exhibits, the triangle is closed. This is why we used CLT for the walls and floors of the indoor exhibition hall.
Although there are many precedents for CLT wall construction, there are not many examples of diagonal walls being used. We combined only CLT panels to create a diagonal wall structure, and created a frame that could be disassembled and reassembled. The detail required for this was the metal fittings to be attached to the CLT. We searched for metal fittings whose strength was regulated in accordance with the legal standards for CLT wall panel construction, and ultimately came up with a combination of metal fittings that would allow the wall panels to be removed simply by fastening and unfastening screws. Additionally, the floor panels are supported in part by beams made of laminated timber. At the joints between the beams and the panels, we designed metal fittings that resemble a saddle on a horse's back. The beams can be removed from the panels simply by loosening the bolts.
Project Structure
Operator | Mitsubishi Estate Estate Co., Ltd.
Designer | Mitsubishi Jisho Design Inc.
Design Supervisor | Kengo Kuma & Associates
Contractor | Mitsubishi Estate Home Home Co., Ltd.
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This is an office prototype that takes both to the next level.
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Nagomuma restroom
A refreshing office toilet.
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MELRemo-IPS — Air conditioning location detection system
Share worker location information with everyone.
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Katsuki Medical Building
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Gas-permeable membrane ventilation system SEPERNA®
Gas exchange reduces ventilation load.
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Sunshine Aquarium "Jellyfish Panorama"
The floors of the building are enveloped in a sea of jellyfish.
R&D WORKS Vol.17
Zero Traffic Ward
The first hospital building in Japan to be registered as a design
Guardian/A reassuring ward where care is given to patients.
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Coil washable fan coil unit
Wash the concealed air conditioner.
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SMAHOLODEO
A simple MR object using a smartphone.
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Excel-linked BIM system
Making BIM more accessible.
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Smart City Vision for the Otemachi, Marunouchi and Yurakucho Areas
Making people's "movement" smart and walkable
R&D WORKS Vol.12
CLT relocation and reconstruction structural system
A relocatable wooden structure made using CLT.
R&D WORKS Vol.11
CLT floor structure system
The floors of mid- to high-rise buildings will be made of wood.
R&D WORKS Vol.10
Louver free-fitting system
Wavy ceiling louvers.
R&D WORKS Vol.09
Rail lighting
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Curtain Wall Sloped Back Panel
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Switchable 2-way facade.
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MyRemo BLE Smartphone control system for multi-air conditioning systems for buildings
Office air conditioning that can be controlled from your smartphone.
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Highly efficient core rod vibration control system
Vibration control technology that uses a core rod to increase efficiency.
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Next Generation Ambient Lighting
Sensory performance required for lighting fixture design
Improves the "sense of brightness."
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CLT hybrid structure office
A warm, mid-rise wooden office
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Air-Soarer: A constant air speed device that realizes a variable air volume Coanda air conditioning system
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Task Desk
One unit per person. The idea of personal air conditioning.
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Update : 2019.01.17
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