ABSTRACT

Floating columns are a common structural element used in buildings to provide architectural flexibility and improve space utilization. By supporting columns on upper floors rather than at the ground level, floating columns allow for more open floor layouts, which is particularly beneficial in commercial and residential buildings where large, unobstructed spaces are required. However, the introduction of floating columns reduces the overall stiffness of the structure. This can pose a significant risk in seismic conditions, as the lack of sufficient stiffness makes the structure more susceptible to damage during earthquakes. As a result, buildings with floating columns are more vulnerable to lateral forces and deformations, which can lead to structural failure if not properly designed and reinforced.

To mitigate the negative impact of floating columns on structural stiffness and enhance earthquake resistance, advanced damping systems like friction pendulum bearings and friction dampers can be employed. These systems help in absorbing and dissipating seismic energy, reducing the lateral movements of the structure during an earthquake. The friction pendulum bearing system is particularly effective in providing a restoring force to the structure, while friction dampers control the amount of displacement and damage caused by lateral loads. By combining these two techniques, the structural performance of buildings with floating columns can be significantly improved. Through numerical analysis, including seismic and time history simulations, the optimal placement of floating columns and the integration of these damping techniques can be determined, ensuring that the structure not only meets architectural requirements but also performs safely during seismic events.