Seismic Analysis of Super Frame Structure Design for High-Rise Building

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As a response to ever denser cities, high rise buildings have become increasingly popular and are growing tallerthan ever. In addition, there is also a developing trend to use modularization that minimizes the constructionschedule and thereby reduces costs. A new efficient structural system for high rise building has been developedcalled the Super Frame (SF). SF structures divide a building structural system into primary and secondarystructures. The primary frames of the SF system are composed of vertical legs in each corner of the buildingwhich are linked by horizontal diaphragm elements at about every 10 to 20 floors. The primary frames resist allvertical, wind, and seismic forces as an exterior structure since the vertical elements are concentrated in thecorner areas of the building, maximizing resistance to the wind and seismic forces. The SF concept has beenrecently used in Asia and the Middle East [1]. However, for such buildings to be built in Canada, they mustconform to Canadian Building Code requirements [2] to ensure their serviceability limit state and ultimate limitstate design under high wind and earthquake loads. The total lateral deformation of the high rise must be underthe Canadian safety limits stated by the code to ensure safety and smooth operation of the high rise building'selevators; these benefits will, in turn, be passed onto rate paying customers.BAH Enterprises is an expert in the field of structural engineering for industrial projects with special emphasison powers stations, power plants (gas, coal, nuclear, wind and solar), electrical transmission projects, andindustrial buildings. BAH is interested in using a combined SF system of High Strength Steel (HSS) framesfilled with Ultra High-Performance Concrete (UHPC) for industrial buildings, as they offer numerousadvantages over other design structures, including lower costs, and more efficient use of space. BAH hasinvestigated the use of such SF designs for industrial buildings, but a lack a sufficient design model,particularly seismic modelling, has prevented practical implementation in projects thus far.