Residual displacements for non-degrading bilinear oscillators under seismic actions
| Autor: | Bonaventura Tagliafierro, Rosario Montuori, Elide Nastri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Bilinear interpolation
SDOF 02 engineering and technology Nonlinear time-history Residual 01 natural sciences Upper and lower bounds Displacement (vector) 010305 fluids & plasmas Momentum 0203 mechanical engineering Residual drift Design response spectra 0103 physical sciences General Materials Science Single degree of freedom Civil and Structural Engineering business.industry Mechanical Engineering Frame (networking) Work (physics) Structural engineering Condensed Matter Physics Nonlinear system 020303 mechanical engineering & transports Synthetic accelerograms Mechanics of Materials Residual deformations business Geology |
| Popis: | This work aims to provide a relationship to assess the residual displacements for one-storey buildings standing in seismic-prone areas. The maximum residual displacement that a structure can possibly sustain is clearly identified by means of its structural characteristics alone. It is demonstrated that the upper bound is independent of the peak displacement. The proposed procedure can help in controlling the structural residual deformations, which is an issue that is gaining momentum into the seismic community: a large body of research has been dealing with post-seismic damage. However, no general rule or theoretical mechanic model with general validity are reported in the literature. The solely valuable approach, though widely accepted, for predicting seismic-induced residual displacements is a statistical one. In order to frame the given relationship into the established probabilistic framework, an extensive numerical campaign has been carried out by means of nonlinear time-history analyses. Artificial spectrum-compatible accelerograms are used as proxies to account for seismic events. As a final result, residual displacement response spectra are proposed. |
| Databáze: | OpenAIRE |
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