Traffic vibration is a phenomenon which buildings shake due to the ground vibration caused by trafficking. For instance, a three-storied building along an urban arterial motorway with a lot of traffic often resonates and generates amplified vibrations. Multi-Type TMD is capable of reducing the oscillations by adjusting the cycle between building vibration and the plum of the TMD. So far, 6,000 Multi-Type TMDs have been used in the steel-frame construction and the number of timber buildings has been rapidly increasing according to the strong demand by clients. |
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Multi-Type TMD installation example
- in a closet, behind a cabin, on a rooftop, etc.
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| Inside the closet on the 3rd floor |
Behind the roof-space |
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| Rooftop |
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Installed on top of the building |
Multi-Type TMD installation procedure (measurement of vibration and characteristic value, and result report -> installation) |
| If you consider of installing a Multi-Type TMD, you can request a simplified measurement for 31,500 yen (inc. tax, travel expenses additional). |
1. Simplified measurement
(for approx. 2 hours) |
We will measure the characteristic and the vibration level of the building.
24-hour vibration measurement is also available as an option. |
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Instruments |
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2. Simplified measurement result report |
We will report the results of the measurement and evaluate if an installation would be effective. In some cases, installation effects may not be expected. |
| Example of the simplified measurement report |
Vibration level |
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| Vibration measurement for 500 seconds (difference between ground vibration and building vibration) |
Building characteristic value and power spectrum map |
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| 3. Installation |
We set up, adjust and tune the TMD after the confirmation of the strength of the installation place by the builder. |
The characteristic value is adjusted and tuned so that it becomes optimal at the location where the Multi-Type TMD is installed. |
After installation has been completed, the builder will cover the device. |
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| Before covering the TMD installed in a closet |
After covering the TMD installed in a closet |
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