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2nd World Congress and Exhibition on Construction and Steel Structure

Las Vegas, USA

M. Manikandan

M. Manikandan

Gulf Consult

Title: Skyscrapers Design and Behavior of Steel Structures and Connections Complexities from Constructability Perspectives


Biography: M. Manikandan


Nowadays the client and architects are looking to have a more floor space utilization ration and unique shape of modern skyscrapers on one hand. The Engineers still tend to optimize a structure to a minimum of weight and optimum passing stress ratios on other hand, which are the hard criterion that available for Engineers during the design of the structures, eventually this criterion leads to structures that are expensive and have a poor quality and complex constructability during the executions phase. For this presentation the 60 story composite steel-concrete twisted peripheral building has been taken as an example to illustrate that the selection of adequate steel members and constructible connections, which leads to have a time reduction, high quality of the structure as a whole and within the budget. A three dimensional 60 stories structure has taken by considering the 4 cylindrical grids spacing 6m, tangential 30o with floor height at base, rest are 5m and 4m respectively. The arch Veirenderal system has been introduced to support the planted column on the grand entrance of the building. ETABS 2015 software has been used to obtain the design the systems with adequate steel sections for beams, columns and bracing members from the standard set of steel sections with grade ASTM A572 Gr50 for W sections, plates and ASTM A500 Gr-50 for tubes., further the concrete grade K800,K600 been considered for walls and slabs correspondingly ,furthermore the metal deck concrete 150mm thick with shear studs ASTM-A108 Gr 1020 dia. 19mm @300 on floor beams are considered as a floor slab, which also acting as a Diaphragm against lateral loads, Furthermore the vertical bracings are provided only in the peripheral alternate bays to limit the Drift against lateral loads such as wind 100mph and Seismic Zone-1. Limcon-V 3.63 has been used to design the connections as per AISC-360 by considering the materials ASTM-A572 Gr 50, ASTM A490 and E70XX for Plates, Bolts and Welds respectively.