Alongwind and crosswind response of friction-pendulum base-isolated high-rise buildings

Wind-Induced Dynamic Response of Inter-Story Isolated Tall Buildings with Friction Pendulum Bearing Based on an Enhanced Simplified Model

“…This paper extends the previous works [30,31] on the wind resistance of the FPB baseisolated tall building to the FPB inter-story isolated tall building. An analytical framework of the wind-induced vibration of an FPB inter-story isolated tall building by the nonlinear time domain analysis and statistical linearization method is first proposed.…”

“…However, this influence is significant only in the case of small sliding of the bearing under the low wind speed. When a distinct sliding occurs at the isolation layer, its displacement quickly reaches a steady state, and the along-wind response can be separately computed for the static response under the mean load and the dynamic response under the fluctuating load [30]. There are consistent solution procedures and similar structural response characteristics for alongwind and crosswind fluctuating responses.…”

“…Apart from the isolation layer being positioned near the top, story accelerations change a little with the isolation location. The friction-induced energy dissipation of bearings increases the damping of the structural system [30,31]. Therefore, the responses of isolated buildings reduce significantly compared with those of the fixed-base building.…”

“…Li et al [29] provided the equivalent static wind load of the base-isolated tall building from the perspective of the load specification. Li et al [30,31] investigated the uncoupled and three-dimensional coupled wind-induced response of a base-isolated tall building with friction pendulum bearing (FPB). Nevertheless, there is almost no report on the wind resistance of inter-story isolated tall buildings.…”