THE ANALYSIS OF ALONG-WIND-INDUCED RESPONSES OF CORE-TUBE SUSPENDED BUILDING STRUCTURE

The Core-tube suspended structure is a novel kind of high-rise structural systems, while its wind-induced responses have not been studied systematically. The wind speed time-history in B class landscape is simulated. And then the wind speed time-history is transformed into wind load time-history acting on the building structure. The calculation model of a vibration-absorption suspended building is built with the finite element method software ANSYS. Then the wind-induced responses are calculated, which are compared with those of ordinary suspended structures. Consequently, the optimized values of parameters for damper connections are discussed. The results show that the displacement and acceleration responses of the top core-tube of a vibration-absorption suspended building under an along-wind load are less than those of an ordinary suspended building. The appropriate damper stiffness can not only reduce the displacement of the top core-tube, but also control the inter-story displacements of suspended floors effectively. And that an improved dynamic control of responses of a suspending building can be achieved with a relatively large damping coefficient, for instance, 1×108N•s/m. The core-tube suspended structures have a good application prospect, and the present work may provide a wind-resistant design reference for this kind of structures.