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  6. Thorough explanation of seismic dampers, including their structure, advantages, and disadvantages.

Thorough explanation of seismic dampers, including their structure, advantages, and disadvantages.

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last updated:Dec 23, 2025

トキワシステム
トキワシステム
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Even in houses with high seismic resistance, it is effective! You can understand the basics of damping structures, including the differences between seismic structures and base-isolated structures.

For those who have completed seismic retrofitting of their homes and are considering making them even more earthquake-resistant, seismic dampers are one effective option. While seismic structures enhance the strength of the building itself, seismic dampers absorb and reduce the shaking from earthquakes, helping to mitigate damage from repeated earthquakes and strong winds. In this article, we will detail the mechanisms, types, lifespan, advantages, and disadvantages of seismic dampers, as well as examine common misconceptions and reasons why some say they are "meaningless." This information will be useful not only for those planning to build a new home but also for those considering earthquake measures for existing homes. *For more detailed content of the column, please refer to the related links. For further information, feel free to download the PDF or contact us.

    Earthquake-proof and vibration-damping equipment
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Thorough explanation of seismic dampers, including their structure, advantages, and disadvantages.

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  • What is a seismic damping device called a "seismic damper"?
  • Special site - Product/service details - https://pr.www.ipros.com/tokiwa-system/product/

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Proposal for Application-Specific Plans for the Vibration Control Device "α Damper Ex II"

Proposal for Application-Specific Plans for the Vibration Control Device "α Damper Ex II"

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Seismic control device for wooden houses αDamperExII (αDamperExII)

Seismic control device for wooden houses αDamperExII (αDamperExII)

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Hydraulic Vibration Control Device for Wooden Houses 'α Damper ExII' *Pamphlet included

Hydraulic Vibration Control Device for Wooden Houses 'α Damper ExII' *Pamphlet included

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Seismic control device for wooden houses αDamperExII

Seismic control device for wooden houses αDamperExII

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[Construction Example] α Damper EXII New Construction Project

[Construction Example] α Damper EXII New Construction Project

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[Construction Case] α Damper EXII Renovation Work

[Construction Case] α Damper EXII Renovation Work

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Earthquake safety measures for peace of mind

Earthquake safety measures for peace of mind

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Seismic resistance level maintained by seismic dampers - Building homes that can be lived in even after a major earthquake.

Seismic resistance level maintained by seismic dampers - Building homes that can be lived in even after a major earthquake.

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Started providing evaluation reports that clearly show the effects of the α Damper Ex II installation at a glance.

Started providing evaluation reports that clearly show the effects of the α Damper Ex II installation at a glance.

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The superiority of the α Damper ExII in suppressing the reduction of building strength due to major earthquakes.

The superiority of the α Damper ExII in suppressing the reduction of building strength due to major earthquakes.

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National Seismic Hazard Map 2018 Edition

National Seismic Hazard Map 2018 Edition

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トキワシステム

トキワシステム

Building materials, supplies and fixtures manufacturers

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Tokiwa System Co., Ltd. is a company that develops, manufactures, and sells the seismic control device αDamperExII. It is a pioneer in seismic control devices using hydraulic dampers. The αDamperExII has received the number one track record and trust in the Tokai and Tonankai earthquake warning areas, and it will soon be adopted in 10,000 buildings. The αDamperExII is a hydraulic seismic control device that reduces building deformation caused by earthquake shaking by approximately half.

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