Interpretation of the physical meaning of the cumulative absolute velocity

Katona, Tamás (2011) Interpretation of the physical meaning of the cumulative absolute velocity. Pollack Periodica, 6 (1). pp. 99-106. ISSN 1788-1994

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Abstract

Assessment of seismic safety of nuclear power plants requires convolution of plant fragilities with seismic hazard curves. Plant level fragility versus peak ground acceleration is obtained by combining component fragilities according to the Boolean-expression of the sequence leading to core damage. An improvement of the fragility modeling can be achieved via description of the fragility as a function of cumulative absolute velocity of ground motion instead of peak ground acceleration. In the paper the physical meaning and dependence on strong motion parameters is also discussed. The reason why the cumulative absolute velocity is an appropriate damage indicator is analyzed.

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