Case studies of Advanced Construction and Demolition waste(CDW)
Recycling initiatives and technologies In JAPANAffiliation
Location
Position:
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SHIMIZU CORPORATION
2-16-1 Kyobashi, Chuo-ku, Tokyo 104-8370
Tokyo Branch Building 1st Section Tokyo Big Site Eastern Temporary
Exhibition Hall Construction Project Director
ETSUMASA YAMADA
essay.yamada@shimz.co.jp
Construction project of temporary exhibition hall on the easternside of Tokyo Big Site
~ Construction project of 100% recycling exhibition hall that canbe easily removed ~〇 Prevention
Re-useRecycleReduce Co2
LegacyBusiness to overseas

Technologydevelopment stage〇Etc.
Practical use
Scheduled to be put into practical use by 2020
Scheduled to be put into practical use after 2020

Specific content-This project is an Olympic-Paralympic-related facility. And it was orderedwith the design build method of design and construction bulk order
including technical proposal considering to be removed and used for about
10 years after construction- We also built eco-friendly buildings that can be recycled, minimizing
environmental impacts in new construction work and future demolition
work.
- At this site, we adopted a pile head ring socket (developed by ourcompany) which eliminated the underground beam for all foundations- We are also assuming that steel pipe piles will be drawn and reused in thefuture.
The upper structure adopts a pure steel structure, double folded roof andouter wall ALC, both of which can be recycled.
Appeal point- Efforts to 3R ,especially waste prevention of large-scale buildings fromthe planning stage are the first in Japan.
- Construction production activities are multi-varieties and one productproduction, there is not the same building as one, the production place alsochanges every time, the lifetime visits someday in any building someday, itsrole ends- As in the construction work of this case, there are rare cases where 3Rs
could be promoted from design to construction to removal of dismantling.
I hope that by transmitting this content, such efforts will increase-39-

Project for Construction of a Temporary Exhibition Hall on the East Side of Tokyo Big Site
Construction of an exhibition hall, which is constructed totally from recycled materials and can bereadily removed

1. Introduction
As the existing exhibition hall at Tokyo Big Site cannot be used for about ten years because of large-scale
rehabilitation work, a temporary exhibition hall was planned to enable various events to be held continuously.

Photo 1 whole exhibition hall
The design and build contract was used for this project which orders design and construction as a package. As
a result of comprehensive evaluation, we were awarded the project.
In our technical proposal, we proposed construction of Eco Building, which would use recycled materials athigh ratio and would be environmentally friendly because this building would be removed after use for about
10 years.

-40-2. Outline of the Building
Location
Lot area
Total floor area
Scale
Building height
Application
Structure
Construction
periodNewly established
East temporary exhibition hall

Within the lot of Tokyo Big Site, 3-10-1
Ariake, Koto-ku, Tokyo
124,186.54m2
19,905.m2
Two stories above ground16.44mExhibition hall
Steel frame structure
November 2015 to October 2016

Existing
East temporary exhibition hall

Photo 2 Exhibition HalllPhoto 3 inside the exhibition hall

3. Employment of a steel-pipe piles rotary jacking method, which ensures easy removal (design stage)
A steel-pipe pile rotary jacking method is to jack steel-pipe piles while rotating them. As shown in Figure 1, a
circular blade is installed at the front end of steel-pipe pile, and both the pile and blade rotate to cut into theground.

Fig.1 Tip of steel pipe pile-41-

For removal,
the pile is turned in an opposite direction
to facilitate easy withdrawal. (Figure 2)

Figure 2

Structure of pile removalThis is an environmentally-friendly methodwith the minimum noise and vibration,
which does not generate any sludge.
In addition,
steel-pipe piles that are used can be totally reused
and recycled after removal.
Since the pile jacking depth to the pile bearing stratumis 70 m underground.
Namely this work method involves extreme difficulty
because pile off-center must be prevented positively
to secure the quality.
Photo -4 Steel pipe pile construction situation
4. Employment of a pile-head ring socket method that does not
require underground suppor(design stage)
A pile-head ring socket method is our unique patented method, inwhich steel-pipe piles and steel column legs are formed into asolid system by surrounding them with outer steel pipes and filling
the gap with concrete. Figure 3 shows a sectional view of thebuilding. As shown in the figure, the head of steel-pipe piles andlegs of steel frame column are jointed.

Figure 3 Sectional view of building and pile head ring socket-42-This method enables the piles to bear the stress from the column legs, which in turn can eliminate theunderground support and foundation. This can reduce excavated soil and concrete mass volumes substantiallyand thus CO2 emission and wastes.

Photo 5 - Installation status of ring socket

Photo-6 Concrete Filling Status
5. Employment of recyclable members (design stage)
The walls of about 2,650 t of steels are of a suspended structure to allow for subsidence and are capable ofrecycling. The outer wall is made from ALC and metal plates. ALC of about 8,760 ㎡ is also totally
recyclable. When disassembled as units during removal, the steels and ALC plates of outer walls can bereused as they are. For the roof of about 17,000 ㎡ , the double folded-plate roof with sandwichedheat-insulation glass wool is employed, which is totally recyclable.

Photo-7 External wall steel construction situation-43-Photo-8 ALC Board Construction Status

Photo-9 Roof construction situation

6. Conclusion

Construction production activities are multi-varieties and one product production, there is not thesame building as one, the production place also changes every time, the lifetime visits someday inany building someday, its role ends
As in the construction work of this case, there are rare cases where 3Rs could be promoted fromdesign to construction to removal of dismantling. I hope that by transmitting this content, such
efforts will increase-44-