Inelastic displacement ratios for non-structural components in steel framed structures under forward-directivity near-fault strong-ground motion

Abstract This paper describes a detailed numerical investigation into the inelastic displacement ratios of non-structural components mounted within multi-storey steel framed buildings and subjected to ground motions with forward-directivity features which are typical near-fault events. The study is carried out using multi-degree-of-freedom models 54 primary different structural characteristics. In conjunction this, 80 secondary elements modelled as single-degree-of-freedom systems placed at every floor structures, then subsequently analysed through extensive dynamic analysis. influence effects on mean response compared results obtained from reference set strong-ground motion records representing far-field It shown that demand under can be over twice large due far-fault counterparts, particularly for periods vibration lower than fundamental period building. Based results, prediction model estimating calibrated directivity features. valid wide range building periods, well various levels inelasticity induced elements.