Horizontal floor response spectra of base‐isolated buildings due to vertical excitation

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SUMMARY A mechanism of horizontal floor response spectra amplification in the vicinity of higher modes' frequencies is investigated. It is demonstrated, by means of a simple two‐degrees‐of‐freedom model, that in the case of unsymmetrical superstructure, such amplification may occur because of the coupling between vertical excitation and horizontal response of the non‐isolated modes. This phenomenon is further illustrated by the results of analyses of a model of a nuclear plant. Copyright © 2011 John Wiley & Sons, Ltd.

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Ioannis Politopoulos

Leiden University

Nadim Moussallam

Framatome (Germany)

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Earthquake Engineering & Structural Dynamics

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Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Direction des énergies

Orano (United States)

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Politopoulos et al. (Tue,) studied this question.

synapsesocial.com/papers/69fe709a413f0c047f2d5231 — DOI: https://doi.org/10.1002/eqe.1139

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The role of damping in seismic isolation· 1999 · 428 citations
Non‐classical damping in dynamic analysis of base‐isolated structures with internal equipment· 1988 · 61 citations

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

Response of seismically isolated structures to rocking‐type excitations· 2009 · 28 citations
Seismic response of light internal equipment in base‐isolated structures· 1985 · 77 citations
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The role of damping in seismic isolation· 1999 · 428 citations
Non‐classical damping in dynamic analysis of base‐isolated structures with internal equipment· 1988 · 61 citations

Horizontal floor response spectra of base‐isolated buildings due to vertical excitation

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