PSI - Issue 44

Devis Sonda et al. / Procedia Structural Integrity 44 (2023) 115–122 Devis Sonda et al. / Structural Integrity Procedia 00 (2022) 000–000

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Fig. 3. Graph of comparison between energy dissipated by existing (red) and new building (green).

The quantification of the conformity percentages is initially based on the experience acquired in the analysis of various industrial buildings damaged by the earthquake and is currently subject to in-depth evaluations and comparison with numerical analyses. The following situations are defined for the four energy quantification parameters (in order from the maximum conformity ( i ) to the minimum ( iv )): a) structural regularity: • regular structure in plan and in elevation ( i ) • regular structure in plan but not in elevation ( ii ) • structure with irregularities on one side in plan ( iii ) • structure with irregularities on two sides in plan ( iv ) b) interference with non-structural elements • no significant interference ( i ) • heavy shelving / partial infills / interfering local irregularities ( ii ) • interfering with heavy facilities ( iii ) • partial infills in elevation height (short-column mechanism) ( iv ) c) column ductility • high ductility seismic design ( i ) • non-ductility seismic design ( ii ) • design for horizontal actions (wind) ( iii ) • design for gravitational loads only ( iv ) d) effective beam-column connections • connections designed for seismic action ( i ) • connections not designed for seismic action ( ii ) • elevate availability of supporting ( iii ) • absence of connections ( iv ) For regularity and ductility parameters, the increase in vulnerability is assumed more than proportional to the deviation from the ideal situation, and therefore produces a strong reduction in terms of energy absorbed and dissipated by the structure. A logarithmic trend is assigned to the proposed relation, which is assumed to be described by the function: 0 / 4 5 (10)