Unveiling the Resilience: Performance of Circular High-Rise Concrete Buildings under Lateral Loading using ring beams and bracing systems.

The ever-evolving architectural landscape has welcomed the emergence of circular high-rise concrete buildings as elegant and efficient solutions. Yet, their unique geometry questions regarding their performance under lateral loading, such as wind and earthquakes. This research delves into the intricacies of their behavior, analyzing their strengths, limitations, and potential failure modes when subjected to these forces., this paper aims to unveil the resilience of circular high-rise concrete buildings under lateral loading, providing valuable insights into their safe and optimal design. Ring beams, horizontal structural elements encircling the building perimeter, play a crucial role in enhancing the overall performance of these structures. This research paper investigates the influence of ring beams and bracing systems on the structural behavior of high-rise concrete buildings, focusing on their impact on stiffness, strength, stability, and overall performance under seismic loading conditions. The study was performed using linear static analysis and nonlinear static pushover analysis . The study pointed out some major guidelines in choosing the right system, For the residential buildings in the moderate zones the system of shear walls is enough, however, the moderate zone to high zone using a ring beam system in circular buildings is the best alternative in the analysis and design, although in high zones the bracing system of any type is the best solution also in the highest seismic zones areas the bracing system of X-type and two spans acts as a restrained two bay frame, which will decrease much the drift and maximum displacement into the permitted range.