SOIL CATEGORY EFFECTS ON THE PERFORMANCE POINT OF STEEL FRAMED TUBE TALL STRUCTURES EQUIPPED WITH BELT TREUSSES AND ADDITIONAL ISOLATED UPPER FLOORS (AIUF)

Current research is carried out on Steel Framed Tube Tall Structures with Truss Belts, consisting welded connections. The main aim is to illustrate the effects of soil categories on the Performance Point of such structures, when using Seismic Base Isolation System under the top stories. For this purpose, 5 three dimensional 40~60 stories Framed Tube Structures, equipped with belt trusses are modeled, analyzed and designed according to ASCE 7-10 code, based on 3 soil categories of Rock (800Capacity Spectrum and Performance Point characteristics due to related soil categories are computed for each model, using USB97 pseudo-acceleration spectrums.

Keywords:

Additional Isolated Upper Floor , Framed Tube Tall Structures , Performance Point , Modal Pushover Analysis , Capacity Spectrum