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Nonlinear Modeling and Mitigation of Seismic Pounding between R/C Frame Buildings

Licari, Mattia

A multi-link finite element contact model reproducing Jankowski's nonlinear viscoelastic relationships is devised and implemented for a time-history analysis of seismic pounding. The mechanical and algorithmic parameters are calibrated with a numerical test case study, represented by two single-story R/C frames. A real case study, concerning two adjacent buildings representative of a stock of R/C multi-story frame structures with insufficient separation joints at rest, is then examined. A damped interconnection-based mitigation solution consisting in linking the two structures with fluid-viscous dissipaters is proposed. The benefits of this retrofit strategy are discussed by comparison with the response in original conditions.

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Nonlinear Modeling and Mitigation of Seismic Pounding between R/C Frame Buildings

Licari, Mattia

A multi-link finite element contact model reproducing Jankowski's nonlinear viscoelastic relationships is devised and implemented for a time-history analysis of seismic pounding. The mechanical and algorithmic parameters are calibrated with a numerical test case study, represented by two single-story R/C frames. A real case study, concerning two adjacent buildings representative of a stock of R/C multi-story frame structures with insufficient separation joints at rest, is then examined. A damped interconnection-based mitigation solution consisting in linking the two structures with fluid-viscous dissipaters is proposed. The benefits of this retrofit strategy are discussed by comparison with the response in original conditions.

Nonlinear Modeling and Mitigation of Seismic Pounding between R/C Frame Buildings

Licari, Mattia

A multi-link finite element contact model reproducing Jankowski's nonlinear viscoelastic relationships is devised and implemented for a time-history analysis of seismic pounding. The mechanical and algorithmic parameters are calibrated with a numerical test case study, represented by two single-story R/C frames. A real case study, concerning two adjacent buildings representative of a stock of R/C multi-story frame structures with insufficient separation joints at rest, is then examined. A damped interconnection-based mitigation solution consisting in linking the two structures with fluid-viscous dissipaters is proposed. The benefits of this retrofit strategy are discussed by comparison with the response in original conditions.

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Title:

Nonlinear Modeling and Mitigation of Seismic Pounding between R/C Frame Buildings

Contributors:

Licari, Mattia (author) / Sorace, Stefano / Terenzi, Gloria

Published in:

Journal of earthquake engineering ; 19

Publication date:

2015

ISSN:

DOI:

https://doi.org/10.1080/13632469.2014.984370

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Nonlinear Dynamic Analysis , Damped Interconnection , Viscosity , Models , R/C Structures , Damping , Pounding Mitigation , Finite element analysis , Seismic Pounding , Fluid-Viscous Dissipaters , Finite Element Contact Models , Seismology , Algorithms

Classification:

BKL: 56.20 Ingenieurgeologie, Bodenmechanik / 38.38 Seismologie / 56.11 Baukonstruktion

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