Wind-generated interaction between tall buildings

To investigate the effect of aerodynamic interference that could increase the dynamic responses of tall buildings to wind loads, a wind tunnel experiment using high-frequency force-balance was conducted to estimate acceleration responses. Root mean square (r.m.s.) acceleration responses of along-wind, across-wind and torsional wind directions and peak resultant accelerations were estimated with and without consideration of the effect of aerodynamic interference, and were then compared with each other. When the effect of aerodynamic interference was included, r.m.s. torsional acceleration response was increased by 82%. For peak resultant acceleration response, the maximum increase was 69%. It was found that dynamic responses could be increased when considering the effect of aerodynamic interference.