Prediction of the wind induced response of multi-story building — Using simultaneous multi-channel measuring control system —

Abstract Progress in structural engineering has enabled higher, more complex-shaped buildings to be realized. Therefore, to ensure bot only structural reliability but also habitability of buildings, it is necessary to examine the characteristics of fluctuating wind forces acting on them. The instantaneous fluctuating wind forces acting simultaneously on many parts of a building are very useful in calculating its response by a time-dependent response analysis. Hence, a Multi-channel Measuring Control System has been developed to enable simultaneous measurement of these forces in wind tunnel tests. This paper first outlines this Multi-channel Measuring Control System. Next, it describes a wind tunnel test and a time-dependent response analysis to explain how the wind-induced response of a particular building, which possesses a coupled vibration mode, is predicted. Furthermore, it also explains the characteristics of wind forces and the response of the building. Hence, the usefulness of the system is comfirmed by showing that the response of the building with coupled vibration modes can be predicted easily. In addition, the response is used to evaluate the building's habitability based on the Japanese guidline.