Postearthquake reconnaissance and recent research on seismic risk analysis have shown that nonductile concrete frame structures are much more susceptible to collapse than modern code-conforming frames. The performance-based assessment paradigm has been a persistent research theme over the last decade within the earthquake engineering community in order to estimate seismic fragilities and earthquake loss for these nonductile concrete frames. This paper proposes a nonlinear performance-based methodology to evaluate different retrofit methods considering hazard level, target performance levels, and life-cycle cost estimates. The structural performance is the main parameter considered for the optimization, although a life-cycle cost analysis is also presented. As a case study, the longitudinal frame of an existing building was modeled considering the effect of flexural-shear-axial load interaction in order to capture column shear and axial failures. The presented performance-based procedure identifies the most economic retrofit solution that satisfies structural response requirements for a given performance level.

Performance-Based Assessment Methodology for Retrofit of Buildings / Miano, A.; Sezen, Halil; Jalayer, F.; Prota, A.. - In: JOURNAL OF STRUCTURAL ENGINEERING. - ISSN 0733-9445. - 145:12(2019). [10.1061/(ASCE)ST.1943-541X.0002419]

Performance-Based Assessment Methodology for Retrofit of Buildings

Miano A.;SEZEN, HALIL;Jalayer F.;Prota A.
2019

Abstract

Postearthquake reconnaissance and recent research on seismic risk analysis have shown that nonductile concrete frame structures are much more susceptible to collapse than modern code-conforming frames. The performance-based assessment paradigm has been a persistent research theme over the last decade within the earthquake engineering community in order to estimate seismic fragilities and earthquake loss for these nonductile concrete frames. This paper proposes a nonlinear performance-based methodology to evaluate different retrofit methods considering hazard level, target performance levels, and life-cycle cost estimates. The structural performance is the main parameter considered for the optimization, although a life-cycle cost analysis is also presented. As a case study, the longitudinal frame of an existing building was modeled considering the effect of flexural-shear-axial load interaction in order to capture column shear and axial failures. The presented performance-based procedure identifies the most economic retrofit solution that satisfies structural response requirements for a given performance level.
2019
Performance-Based Assessment Methodology for Retrofit of Buildings / Miano, A.; Sezen, Halil; Jalayer, F.; Prota, A.. - In: JOURNAL OF STRUCTURAL ENGINEERING. - ISSN 0733-9445. - 145:12(2019). [10.1061/(ASCE)ST.1943-541X.0002419]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/766925
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