Simulation-Based Fragility Relationships for Unreinforced Masonry Buildings
TLDR
In this article, the capacity spectrum method was used to estimate the damage performance limit states of reinforced masonry (URM) buildings in the New Madrid Seismic Zone in the United States.Abstract:
Unreinforced masonry (URM) structures represent a significant portion of the residential building stock of the central and eastern United States. Fifteen percent of homes in the eight-state region impacted by the New Madrid Seismic Zone are URM buildings. The brittle nature of URM buildings further supports a thorough consideration of seismic response given the susceptibility to severe failure modes. Cur- rently, there is a pressing need for analytically based fragility curves for URM buildings. To improve the estimation of damage-state probabil- ities through the development of simulation-based URM fragilities, an extensive literature survey is conducted on pushover analysis. Using these data, capacity curves are generated, from which damage performance limit states are defined. Demand is simulated using synthetically derivedaccelerogramsrepresentativeofthecentralandeasternUnitedStates.Structuralresponseisevaluatedusinganadvancedcapacityspec- trum method. Capacity, demand, and response are thus derived analytically and utilized to generate a more reliable and uniform set of fragility curves for use in loss-assessment software. This paper presents a framework amenable to rapid, flexible updating that, with the appropriate database of studies, is capable of producing curves representative of any URM building typology subjected to a specified hazard. The curves are expressed in multiple forms to demonstrate capability of use in various loss-assessment applications. DOI: 10.1061/(ASCE)ST.1943- 541X.0000648. © 2013 American Society of Civil Engineers. CE Database subject headings: Masonry; Seismic effects; Residential buildings. Author keywords: Masonry; Fragility relationships; Seismic vulnerability; Loss assessment; Capacity spectrum method; HAZUS.read more
Citations
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Seismic fragility assessment of low-rise stone masonry buildings
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Analytical fragility curves for masonry school building portfolios in Nepal
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Numerical assessment of the dynamic response of a URM terraced house exposed to induced seismicity
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Definition of fragility curves through nonlinear static analyses: procedure and application to a mixed masonry-RC building stock
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References
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