Seismic Performance of Steel-concrete Hybrid Structure for High-rise Buildings with Viscous Dampers

Earthquakes are critical issues for designing the structures. While some of them are so small, they are never noticed; others are so powerful that they can destroy whole cities. During a seismic event, the input energy takes the form of ground acceleration. This energy is converted into both kinetic and potential energy, which can either be absorbed by the structure or dissipated through some other forms of energy, usually heat [۱].In such a case, structural control techniques are believed to be one of the most promising solution for earthquake resistance. The concept of structural control is to take in vibration energy of the structure by introducing supplemental devices. The use of viscous dampers in high-rise buildings in seismic regions is intended to reduce the vibrations created by strong winds or earthquakes [۲].This paper aims to analyze how viscous dampers affect the durability of steel-concrete hybrid structures for high-rise buildings when experiencing seismic activity. A hybrid structure building with ۱۵ floors is analyzed. The structure is equipped with ۶۰ viscous dampers. Drift, shear, and displacement are compared for all cases. It is observed that the use of viscous dampers can decrease the story drift rotation, story displacement, and structural damage.

Keywords:

high-rise building , steel-concrete structure , hybrid structure , viscous damper , seismic performance