Seismic and Wind Load Mitigation in Urban Florida: The Efficacy of Concrete Shear Walls vs. Steel Bracing Systems
摘要
Florida, known for its hurricane-prone climate, faces significant wind loads that impose lateral forces on structures, necessitating robust design strategies to ensure stability and safety. Compared to other states, Florida has comparatively little seismic activity, but it is still considered when designing buildings. Selecting structural systems that can withstand these lateral forces is essential. Concrete shear wall and Steel bracing are perfect examples for it, where concrete shear wall are subjected because of their lateral stiffness, reduces maximum displacement in taller structure along with story drifts and steel braced systems provides flexibility and ease of construction but are less effective in controlling lateral forces especially in taller buildings. The medium-to-high-rise buildings under study are representative of the typical urban environment found in Florida’s coastal cities, where these kinds of structures are frequently built. Through analysing these two structural systems’ performance at varying building heights, the study seeks to shed light on the best designs for resilience and safety, given Florida’s particular environmental constraints. Using ETABS software, the analysis looks at key performance indicators according to ASCE 7-22 and ACI 318-19 standards, including base shear, maximum story drift, displacement, and time period. The findings underscore the importance of selecting appropriate structural systems to address the specific challenges posed by Florida’s climate, ultimately prioritising both the safety and longevity of buildings in the region.