GERB Vibration Control Systems, Inc, Berlin
High-performance materials, enhanced design methods and much higher certainties in wind engineering have led to slenderer tall building designs. To ensure the serviceability of the buildings, passive TMD systems are a standard application for increasing the structural damping of buildings, thus obtaining increased comfort for the occupants. The increased slenderness leads to longer building periods, which not only increase susceptibility to wind-induced vibrations, but also pose a challenge for the design of passive TMD systems, since the application of single or folded pendulum systems would require the allocation of a vast mounting space to accommodate the required pendulum length. To reduce the required mounting space, an innovative low-friction sliding system has been developed, which combines the requirements of high-efficiency performance for all kinds of wind events, with the durability, maintenance-free design and robustness of standard pendulum systems. In addition, these systems allow a simple modular installation to reduce crane picks and installation time. Furthermore, the tuning frequency can be easily modified by exchanging the elastic elements, and a damper modification is also possible without any great effort.
This presentation gives an overview of these innovative systems and shows examples of their application in tall buildings. The results of long-term monitoring of the buildings and TMD systems is presented, alongside the results of workshop tests, to ensure the full functionality of these innovative systems is communicated. Furthermore, an overview of the simplified installation sequence will be given with examples from realized projects.