Record-to-record variability and code-compatible seismic safety-checking with limited number of records

نویسندگان

چکیده

Abstract The Italian code requires spectrum compatibility with mean for a suite of accelerograms selected time-history analysis. Although these requirements define minimum acceptability criteria, it is likely that code-based non-linear dynamic analysis going to be done based on limited number records. Performance-based safety-checking provides formal basis addressing the record-to-record variability and epistemic uncertainties due records in estimation seismic hazard curve. “Cloud Analysis” procedure employs structural response un-scaled ground motion can directly implemented performance-based safety-checking. This paper interprets provisions key applies further restrictions spectrum-compatible record selection aiming implement Cloud Analysis. It shown that, by multiplying closed-form coefficient, safety ratio could transformed into simplified ratio. as proof concept, if partial factors are set unity, this coefficient average slightly larger than unity. propagating sample size curve both rigorous manner. If considered, checking end up being unconservative respect procedures when small. However, possible no extra analyses.

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ژورنال

عنوان ژورنال: Bulletin of Earthquake Engineering

سال: 2021

ISSN: ['1573-1456', '1570-761X']

DOI: https://doi.org/10.1007/s10518-020-01024-6