The control effects of a connected tall building structure with viscous damper in several respects were studied

such as internal force

deformation

acceleration and energy under dynamic wind load. Firstly

wind pressure timehistory data were obtained from the windtunnel test of the structure model

and then a wind load processing program WINDHIST V2.0 based on wind tunnel test was developed

by which wind pressure data processed and inputted into Finite Element Method(FEM) program. Thus windinduced vibration timehistory could be analysed under various working conditions. It was shown that both the internal force and deformation of the connected structure with viscous damper can be decreased

while the effect of the former was more obvious than the latter. The acceleration at the top of the connected structure caused by dynamic response of fluctuating wind can be controlled effectively by viscous damper.