An Analytical Approach to Seismic Response ‎Variation of Hybrid ‎Resistant Structures Comprised ‎of Braced Planed Tube with Belt ‎

An Analytical Approach to Seismic Response ‎Variation of Hybrid ‎Resistant Structures Comprised ‎of Braced Planed Tube with Belt ‎

Phenomenological Aspects of Civil Engineering (PACE) - an International Congress
Volume 1 - Issue 1 - PACE-2021

Mohaddese Sadeghpour Afshin Meshkat-Dini

Abstract

Recent societal needs have led to the expanding growth of tall ‎buildings with added emphasis on safety, human ‎comfort, and ‎serviceability under wind and earthduake loading as well as ‎environmental and economic impact. In ‎modern tall buildings, lateral ‎loads induced by wind or earthquake are often resisted by a system of ‎coupled shear ‎walls. But when the building increases in height, the ‎stiffness of the structure becomes more important. One of the ‎most ‎efficient approaches to provide both strength and stiffness in a ‎structural frame is to implement hybrid ‎system of peripheral braced ‎frame along with belt truss. This paper aims to investigate the seismic ‎behaviour of ‎steel tall buildings having a compound braced-tube ‎resistant skeleton with belted trusses in higher levels.To this ‎end, ‎two 30-story study models have been designed in 3D. The chosen ensemble ‎of three-component ground ‎motions includes highly powerful near-field ‎records as well as one far-field tremor. Based on the analysis ‎results ‎results in a large decrease in lateral displacement and dynamic ‎drift of the structure and will therefore cause an ‎increase in using ‎the axial capacity of peripheral columns of the structre plan. ‎Therefore, implementing belt truss ‎in addition to lateral resisting ‎system of the structure, is proposed as an efficient scheme in ‎designing high rise ‎buildings.‎

Keywords

Tall Building; Hybrid Resistant ‎Structures; Belt truss; ‎Seismic Behavior ‎;outrigger‎
https://www.acapublishing.com/dosyalar/baski/PACE_2021_315.pdf