Resource optimisation considerations for earthquake-resistant structural design of buildings according to geometric and architectural requirements.

Abstract

This document is the result of multiple investigations carried out by the authors, which have been published or are in the process of being published, where the starting point is a structural system in earthquake resistant steel that is lighter in weight: Special Concentrically Brace Frames SCBF, since in other investigations the authors have compared different steel structural systems and has come to the conclusion that SCBF is the lightest, however it maintains seismic resistant characteristics and is even more rigid than other systems without braces such as Special Moment Frames SMF, additionally it is placed in places where it is not necessary that the frames are braced using ordinary OMF moment frames. Eighteen structural archetypes have been designed, varying the distance between column axes, number of floors, but preserving their geometry and architecture. Of which 9 archetypes are made of SCBF structural steel and 9 of SMF type reinforced concrete. Both materials present acceptable and similar seismic-resistant conditions, so based on these designs, the cost and the amount of CO2 emitted are analyzed, considering the superstructure from level 0+00 and the substructure or foundations. The result is which structure is more environmentally friendly and alternatives of use according to area, number of floors and distances between axes looking for an economic optimization.