Performance of Concurrent Shear Wall as a Bracing System to Resist Lateral Load on Supertall Structures

Tall building structural solutions have developed in such a way that they competently improve lateral stiffness against lateral forces, and especially against wind loads. Around the world, tall buildings are continually being developed to reach ever-higher heights. As a result, structural systems have seen several advancements. This work aims to determine whether Bangladeshi structures taller than the nation's current tallest tower can be built using a novel structural system named the Concurrent Shear Wall System. This idea requires the placement of several Concurrent Shear Walls linked by beams and RC floor slabs in both directions. Vertical cantilevers are formed by linking the shear walls closely all the way to the foundation. Its performance is then compared with the Bundled Tube System as the current world's tallest structure is constructed using this. Based on the outcomes of numerical calculations carried out with the use of the tool ETABS, the Concurrent Shear Wall System significantly decreases displacement and drift (both decrease more than 20%), making the structure more rigid and stiffer (more than double that of the popular Bundled Tube System). Increased shear wall thickness results in less displacement and drift and noticeably increased stiffness at a lesser cost of materials. Its high in-plane stiffness and strength make it the potential best option for bracing systems. This opens up the possibility of using this system for even taller structures (200 + stories).