Another project in our country where seismic and wind protection systems have been applied is the new Flagpole at the National Flag Square.

For the seismic and wind protection of this structure, ESDESCON LLC supplied a Tuned Mass Damper (TMD) system manufactured by the German company MAURER.

Furthermore, the temporary dampers used during the erection of the flagpole were also produced by MAURER.

The current height of the flagpole is 195 meters and consists of 10 conical metal sections.

The permanent MAURER TMD is installed in the 9th section of the pole.

Before construction, one of the main questions was: How can the pole be protected from wind-induced vibrations during the erection of the first 8 sections — when the permanent damper is not yet in place?

To solve this, temporary dampers were planned and applied during the erection process.

Since the first 3 sections were heavy and had large diameters (the base diameter of the pole is 6.45 meters) and their total height (50.508 meters) was not considered critical, structural analysis showed that temporary dampers were not necessary for these sections.

However, for the erection of sections 4 through 8, temporary dampers were essential to prevent significant swaying or resonance under wind loads.

As a result, temporary dampers were designed by Distributed Engineering and a 5-unit temporary damper system was manufactured at MAURER’s plant in Munich, Germany.

These dampers consist of cylindrical chambers filled with liquid and metal partitions with various orifices inside, allowing them to effectively suppress vibrations during the erection of sections 4 to 8, ensuring a stable construction process.

Further information about the permanent MAURER TMD system can be found on our website.