11 Projects in Japan Using Damptech Dampers


Abenobashi Terminal Building

(Japan's highest skyscraper)

Abeno Harukas opened on March 7, 2014. The building is 300 meters tall and has 62 floors, making it the tallest building in Japan. It includes a Station, Department Store, Office, Hotel, Art Museum, and Observatory.

The building has seismic resistance capable of withstanding earthquakes 1.5 times larger than the level specified in government regulations, thanks to its state-of-the-art earthquake-resistant technologies. The structural frame is used that can withstand earthquakes with an intensity of 7 on the Japanese seven-stage seismic scale.

Damptech scope included installing V-bracing 4J Dampers. High capacity dampers in the range1500 – 5000 kN were developed for this project.


Ancient Temple in collaboration with Takenaka Corp.

  • Location: Taishido Building, Yaguri-ji Temple
  • Date: June  2003
  • Main Use: Retrofit of Timber Frame Temple, using T-damper with diagonal bracing
  • Concerns of client: Careful attention to architecture

5 Story Laboratory Building

  • Location:             Osaka, Japan
  • Height:                 5 floors, 30m (100 ft)
  • V- Dampers:       No. 8,    Capacity: 35 Kip (150 kN),    Stroke:  +/- 24inch (+/-600mm)
  • Completed:         2004

The five story laboratory was Damptech’s first base isolation project in Japan.

We obtained the required and difficult-to-achieve approval in Japan for the 150kN damper after several months of rigorous testing at the structural testing laboratories of Takenaka Corporation and Kawakin Core-Tech.

Damptech provided supplemental damping to the elastomeric (rubber) bearing base isolators.

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laurel tower, residential Project in Osaka

  • Location: Osaka, Japan
  • Main Use: Apartment House, 257 units
  • Total floor area: 32,387m2
  • Number of floors: 44 + 2 pent house floors, 144 m
  • V- Dampers:       No. 24,    Capacity: 35 Kip (150 kN),    Stroke:  +/- 24inch (+/-600mm)

The Kita Ku Ultra Skyskraper Project, or Laurel Tower Sanctus Umeda, is a skyscraper built in the Kita-Ku district of Osaka, built from 2004-2007.

Damptech Dampers are classified as high-damping devices and were used by the designers to add damping to the elastomeric (rubber) bearings, instead of using the fluid dampers. 

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Production Facility Project in Tokushima

  • Location: Anan-city,Tokushima,Japan
  • Main Use: Production Facility
  • Total floor area: 12,638m2
  • Height, 9 floors, 35.55 m
  • V- Dampers:       No. 24,    Capacity: 35 Kip (150 kN),    Stroke:  +/- 24inch (+/-600mm)

The production facility in Tokushima, Japan wanted base isolation to secure the production facilities in the event of a major earthquake.

Damptech Dampers are classified as high-damping devices and were used by the designers to add damping to the elastomeric (rubber) bearings. Damptech dampers perform equally well at all earthquake frequencies and amplitudes, are unaffected by temperature and are an economic solution, where large displacements are required, as in base isolation

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Laboratory Facility in yokohama

  • Location: Yokohama, Kanagawa
  • Total floor area:  8,797m2
  • Height, 7 floors, 35 m (115 ft)
  • V- Dampers:       No. 8,    Capacity: 35 Kip (150 kN),    Stroke:  +/- 24inch (+/-600mm)

This is a Laboratory in Yokohama for NICHM in Japan. There was a desire to reduce displacements and accelerations to protect laboratory equipment.

The building is a combination of steel and reinforced concrete.

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Three Buildings, DAINICHI TOWERS 1, 2 & 3

  • Location: Osaka, Japan
  • Main Use: Apartment House, 1,163 units
  • Total floor area: Largest residential development in the western Japan
  • Height, 40 floors each, 3 Towers, 135 m (440 ft)
  • V- Dampers:       No. 48,    Capacity: 35 Kip (150 kN),    Stroke:  +/- 24inch (+/-600mm)

The largest residential development in the western Japan and the highest number of units supplied by Sanyo Homes, in Osaka

This project has 1,163 units, making it one of the largest condominium complexes in western Japan. Completed in 2007-9, the three towers are secured using base isolation.

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Residential Tower, TOKYO

  • Location: Tokyo
  • Main Use: Apartments
  • Total floor area: 8,037m2
  • Number of floors: 12 (Above ground)
  • The information below is from Takenaka Corp. on July 2011

In 2011 a strong earthquake struck Tokyo. Previously accelerometers had been installed in an apartment building which was equipped with Damptech dampers for earthquake protection. The accelerometers had been installed in the building at the ground level, 1st and 12th floor to measure the performance of the building during earthquakes. The observed acceleration of the 1st and 12th floor of the building was very close to the simulated acceleration of the building. Furthermore the acceleration of the 1st floor and 12th floor was reduced by 50% and 40% respectively compared to the simulated response of the building without dampers. In conclusion the building which was equipped with Damptech dampers performed very well. 


Project 11 in Japan | First Ancient Temple In collaboration with Takenaka Corp.

  • Hondo Building,  Yaguri-ji Temple
  • Date: March 2003
  • Main Use: Retrofit of Timber Frame Temple, using T-damper with diagonal bracing
  • Concerns of client: Careful attention to architecture