Methods For The Evaluation Of The Damage Limit
State And Stiffness Regularity In Elevation Of
Frame Systems In Seismic Areas
Author(s)
N. Caterino & E. Cosenza
Abstract
Recent earthquake resistant design codes (e.g. Eurocode 8, last Italian seismic
code) underline the importance of stiffness regularity in elevation for frame
systems located in seismic areas. Large deviations from a continuous variation
with height of stiffness are likely to induce poor and often dangerous structural
response (Paulay and Priestley). New codes emphasize moreover the importance
of limiting non-structural damage under a seismic action having a large
probability of occurrence during the economic life of a building. Actually non-structural
components play a significant role in performance-based earthquake
engineering. Damage limitation requirements consist in limiting interstorey
drifts. Therefore, to evaluate and eventually redefine a new building’s
preliminary design, it seems very useful to have a method to quickly calculate
lateral stiffness of each storey so as to quantify its variation along the height of
the building as well as a simple procedure to estimate the maximum lateral drift
demands. Two approximate methods will be proposed for achieving these
purposes.
Keywords: non-structural damage, interstorey drift, storey stiffness, regularity.
1 Introduction
In the last years the awareness about the importance of the buildings’ regularity
and of the non-structural damage prevention for frame systems located in seismic
areas has grown significantly, especially after the observation of the recent
disastrous seismic events’ effects.
Keywords
non-structural damage, interstorey drift, storey stiffness, regularity.
Related Book
Other papers in this volume
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