VIBRATION CONTROL OF SEISMIC STRUCTURES USING FACADE MASS ISOLATION MODEL

Development and implementation of Innovative facade systems to enhance seismic response of building structures have been a topic of debate for structural and architectural engineers. Due to these developments new types of facade systems, such as double-skin facade system, have become popular to be used in building construction technology. In the present study partial mass isolation technique is used for facade system. The method presented here is called Facade Mass Isolation (FMI) in which a facade component is isolated from the primary building. This approach, through isolating different portions of masses at different stories, can provide a building with multiple inherent vibration suppressors without the need to add extra masses. Selection of the FMI system’s parameters are conducted for structural models with 5, 10, and 15 stories to minimize root-mean-square inter-story drift responses under four earthquake include the El Centro, Hachinohe, San Fernando and Taft, while parameter constraints are specified to control isolated components’ responses. To show the accuracy of the model to control vibration seismic structure, facade mass isolation model is investigated and compared with results available in non-isolated model. Results show suitable behaviour of structure and also reduction of deformations in the facade components.

Keywords:

Facade Mass Isolation , Partial Mass Isolation , Passive Structural Control , Tall Buildings , Double-Skin Facade