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Abstract:
The traditional frame-core tube(FCT)system has limitations such as inflexible layout and insufficient economy while ensuring seismic performance. A new high-rise structure system of frame-distributed tube-core tube(FDCT)is proposed,which has three seismic fortification lines. In order to coordinate and control story drift,it is further improved into a new type of high-rise structure system,namely frame-distributed rocking tube-core tube(FDRCT). The dynamic models of FDCT and FDRCT are established,and the main parameters that affect them damping effect are explored via the frequency domain dynamic and ground motion random analysis,which is proved that FDRCT structure has better damping effect than FCT structure. The typical FCT structure is designed and adjusted to establish the corresponding FDCT structure and FDRCT structure,and the nonlinear time history analysis is carried out. Compared with the traditional scheme,the displacement of FDCT is increased appropriately due to its small stiffness. Although the maximum story drift ratio and top displacement of FDRCT structure increase slightly,the distribution of story deformation is more uniform,which prevents the appearance of weak stories,and the structural acceleration response decreases. Appropriately increasing the mass of the distributed rocking core can make the structural deformation more uniform. The economic analysis results show that FDRCT structure can not only improve the economy,but also has better seismic and damping performance,which has excellent engineering application value. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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Journal of Vibration Engineering
ISSN: 1004-4523
Year: 2023
Issue: 2
Volume: 36
Page: 357-368
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WoS CC Cited Count: 0
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 3
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