One of MAURER's projects related to seismic protection is the installation of the TMD system on a building in Peru.
The project involves the installation of vibration dampers for a 9-story administrative building of an insurance company in Peru. This administrative building has 9 floors and a height of 40 m, it is narrow, asymmetrical, and has a soft frame. Although this building is not vulnerable to wind impact, it is very susceptible to earthquakes. However, the building's owner did not agree to install additional reinforcing walls to preserve the internal architectural design. Therefore, it was required to find a solution without physical intervention in the building.
The study showed that the displacement on the 9th floor of the building was 225 mm, which could lead to the building's collapse and injuries to people.
A solution was proposed to add a concrete mass on rubber bearings at the very top of the building, which would work on the principle of a TMD (tuned mass damper). This was the first TMD mechanism developed with the earthquake factor in mind, rather than wind. Another advantage of the proposed mechanism was that the added mass would also serve as the building's roof, being part of its mass, which significantly saved costs for the customer.
The said concrete mass has a thickness of 600 mm and dimensions of 13x11 m. Its approximate weight is 210 tons. The project used 11 rubber bearings, thanks to which the displacement was reduced to 160 mm. The height of the bearings is 300 mm, and the diameter is 500 mm.
The project involves the installation of vibration dampers for a 9-story administrative building of an insurance company in Peru. This administrative building has 9 floors and a height of 40 m, it is narrow, asymmetrical, and has a soft frame. Although this building is not vulnerable to wind impact, it is very susceptible to earthquakes. However, the building's owner did not agree to install additional reinforcing walls to preserve the internal architectural design. Therefore, it was required to find a solution without physical intervention in the building.
The study showed that the displacement on the 9th floor of the building was 225 mm, which could lead to the building's collapse and injuries to people.
A solution was proposed to add a concrete mass on rubber bearings at the very top of the building, which would work on the principle of a TMD (tuned mass damper). This was the first TMD mechanism developed with the earthquake factor in mind, rather than wind. Another advantage of the proposed mechanism was that the added mass would also serve as the building's roof, being part of its mass, which significantly saved costs for the customer.
The said concrete mass has a thickness of 600 mm and dimensions of 13x11 m. Its approximate weight is 210 tons. The project used 11 rubber bearings, thanks to which the displacement was reduced to 160 mm. The height of the bearings is 300 mm, and the diameter is 500 mm.
