Effects of Surface-Attached Vertical Ribs on Wind Loads and Wind-Induced Responses of High-Rise Buildings

Façade design tends to be diverse with increasing requirements for architectural functions in modern high-rise buildings, leading various aerodynamic roughness conditions of the building surface. A typical practice is setting vertical ribs on façade. This study aims clarify effects wind loads and wind-induced responses buildings. The models four rib configurations were tested open suburban exposures using High-Frequency Force Balance (HFFB) technique a tunnel. base overturning moments corresponding are demonstrated compared between exposures. Results show that relative width 4% can not only reduce mean force coefficients along-wind direction but also attenuate cross-wind vibration by disrupting regular vortex shedding. Moreover, half-distributed full-distributed have almost indistinguishable benefit, indicating corner region façade play dominant role reducing responses. Although would less severe exposure than those exposure, reduction rate remains unchanged.