Title: Innovative concept on structural engineering of mega tall buildings applied to one kilometre high concrete skyscraper

Biography:

Feroz Alam has invented a structural concept for tall/ mega tall buildings which can build up to one kilometer high where no additional structural supporting systems are required like belt truss, bracings etc. This structural concept also overcame previous disadvantage of shear lag effects of tube concept. A book (ISBN: 978-3-639-66041-8) published completely on his innovative concept from ‘’Scholars’ Press’’ – Omni Scriptum – Germany. He worked as a design engineer in Bangladesh, Saudi Arabia & Dubai where he involved for high-rise building designs (Steel & Concrete). Presently he is working in Qatar as a design advisor. He designed a 54 storied building in Doha, Qatar. He is also invented a concept for ‘’reduction (around 8 to 10%) of concrete from shear walls’’ of tall buildings without affecting the structural integrity of the buildings.

Abstract

Structural system of tall buildings have undergone dramatic changes since the demise of the conventional rigid frames in the 1960s as the predominant type of structural system for steel or concrete tall buildings. There are numerous structural lateral systems used in high-rise building design such as shear frames, frames with shear core, framed tubes, tube in tube, super frames
which can construct for up to 140 stories. Later developed structural systems like outriggers and the buttress core has allowed for even higher buildings, can design for up to 160 stories. This study is intended to model an advanced structural system for tall buildings which can build taller than the tallest existing one. This innovative concept is applied to four models of heights 380m, 706m, 760m & one kilometer and aspect ratios (height/least width at base) are 7, 9, 7.6 & 9.5 respectively has been analyzed where several parallel shear walls have been arranged in both directions and connected with beams and slabs. Result analysis satisfied drift & acceleration limits according to international codes and standards which are main factors to be checked for tall buildings. Arrangements of shear walls are the main technic of this concept. Shear walls are continuous down to the base to which they are rigidly attached to form vertical cantilevers. Their high in plane stiffness and strength make them well suited for bracing buildings up to 264 stories at 1003.2m high (where drift at top 1964mm, allowable H/500 = 2006mm).Dynamic analysis of this I KM tower shows that the habitable floor is at height 722m (Record breaking habitable height)
besides, by introducing TMD can make the top habitable. This shear walls arrangement is applicable for tall buildings up to a height of one kilometer and can avoid additional supports to resist the lateral forces.