Evaluation of Seismic Demand Parameters of Tall Framed Tube Skeleton contains Large Scale Zipper Elements

The study includes an analytical approach to the issue of improving the seismic performance of the frame tube resistant skeleton. In this regard, the use of large-scale zipper elements in resisting skeleton of structures is investigated. Add a configuration of these elements only on the lower floors of structures can be a positive effect on reducing the parameters of the dynamic response of combined frame tube structures. Reduction of inter story drift and permanent drift, Creating downward trend in absolute acceleration and relative velocity graphs of the center of mass, Reducing non-linear rotation of panel zones, Represents the better performance in the skeletal configuration of a prototype tall frame-tube structure. Three 30-story building of frame tube skeleton and two configurations in combination with large-scale zipper elements selected and designed. A set of nonlinear analysis for side loading of these structures are done based on a choice of five powerful earthquake records. The presence of high-energy pulses and extensive acceleration spike with a combination of high speed pulses in selected time history records, is characterized by the modelling of near-fault ground motions. The skeleton of selected structures is designed based on the sixth and tenth National Building Regulations and the 2800 (Fourth Edition). Evaluation of the results showed that presence of large-scale configuration Zipper-Elements in the lower decks, Create an integrated behavior mechanism and the continuity of the seismic performance in tall building rigid skeleton. Showing the stable structural dynamic behavior of structures, particularly in large velocity pulse range, Along with reducing drift parameter, are the most important characteristics of such infrastructure in resistant skeleton tall buildings.