RETRACTED ARTICLE: Dynamic analysis of structures installed hysteretic dampers with hardening post-yielding stiffness using connection element method

Xing-Nan Ma and Li-Hua Zhu ()
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Xing-Nan Ma: Hebei University of Engineering
Li-Hua Zhu: Hebei University of Engineering

Journal of Combinatorial Optimization, 2023, vol. 45, issue 3, No 13, 34 pages

Abstract: Abstract In recent years, various passive energy dissipation devices have been gradually applied to structural vibration control. Hysteretic dampers with hardening post-yielding stiffness (HDHPSs) could solve the problem of insufficient stiffness after the ordinary friction damper enters into its yield state, and realize multi-level seismic objectives and multi-stage energy dissipation. For hysteretic dampers with hardening post-yielding stiffness, computational formula of its resistance is given in this paper based on Wen-Gap connecting element, and the calculation formula of its equivalent yield strength is derived combining with the energy theory, which is verified by SAP2000 software. A 12-story steel frame with a weak story was strengthened by using HDHPSs and the dynamic performances of three frames are compared by using the connection element method proposed in this paper. The results show that the proposed formula of equivalent yield strength matches well with the numerical simulation results, which could provide a reference for seismic design of structures installed such dampers. The connection element method proposed in this paper is feasible to analyze the dynamic performances of structures with hardening post-yielding stiffness. The frame installed HDHPSs could effectively control the maximum displacement, which could meet the requirement of displacement performance target. This paper has certain reference significance for structural retrofit of existing structures.

Keywords: Connection element method; Hardening post-yielding stiffness; Dynamic performance; Structural retrofit; Energy dissipation device (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10878-023-01009-6

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