Vibration protection for Toranomon Hills Mori Tower and road in Tokyo
Austrian company Getzner provides vibration protection for the tower and four-lane roadway running directly underneath
First implementation phase
The first implementation phase of the project involved applying a resilient bedding to the 200 m underground length of motorway. The full width of this section was bedded on the high-tech Sylomer®. This has the effect of providing the structure erected above the road with effective and long-term protection against vibration. The solution directly addresses the cause of the vibration, as the four-lane urban motorway, which is the source of the disturbing structure-bourne noise, has now been isolated. The elastic bedding decouples the source of disturbance from its surroundings, and thus also from the structure erected over it.
Second implementation phase
In the second implementation phase of the project, a variety of internal vibration-damping construction measures for decoupling the hotel that occupies the upper floors of the tower were carried out. In order to protect this sensitive area in the best possible way against vibrations, Getzner bedded the hotel floors, the pool areas and the fitness and machinery rooms of the hotel on Sylomer®. This prevents structure-borne noise from spreading through the building. The building is thus effectively protected against unwanted vibrations.
New standards in urban development
"Installing Sylomer® mats has the effect of reducing noise and vibration. The material has been employed successfully for decades – Getzner has demonstrated this on numerous occasions in the railway sector. Another important criterion for future-oriented urban planning is that the material should be easy and quick to install", states General Manager, Toru Tsuchihashi of Mori Building. Getzner also assumed responsibility for overseeing the installation process. "On a project of this magnitude it is not only very important to work closely with our Japanese partners, one really needs to be on site oneself, as only then can we constantly monitor the quality of the work and ensure that our materials protect this superb architecture in the long term. For Getzner, this order is a valuable reference for future projects all over the world", adds Werner Ebster, project manager at Getzner.
Factbox Toranomon Hills in Tokyo (JP)
- Key facts: A mixed use high-rise building in Tokyo (247 m, 52 floors)
- Location: Toranomon 1-chome 23-1~4, Minato-ku, Tokyo
- Owner: Mori Building Co., Ltd. Carriageway
- solution: Full-width elastic bedding with Sylomer® of a four-lane carriageway
- Hotel solution: Hotel floors, pool complexes plus fitness suites and machinery rooms underlaid with Sylomer® bedding
- Completion: 2014