Abstract:The uniform support motion (USM) method is generally used for multiply supported nuclear piping system. This method uses a uniform response spectrum (URS) which envelopes all of the individual response spectra and can result in considerable overestimation of seismic responses. An alternate method is the independent support motion (ISM) approach. This approach can also result in overestimation when the maximum responses by multiple excitations are combined by the absolute sum rule, while this may result in unde… Show more
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