Behaviour Factor Of RC Structures:
A Probabilistic Approach
Author(s)
G. C. Thomos & C. G. Trezos
Abstract
In this study, the behaviour factor of various buildings is estimated, taking into
account the random character of their characteristics. The pushover analysis is
adopted and the basic variables of the building are considered as random. Monte
Carlo methods are used for the simulation of the random character of the basic
variables and a series of pushover curves is obtained. Each pushover curve is
combined with the seismic response spectrum to obtain the maximum spectral
acceleration that the building can withstand and the yield spectral acceleration of
the building. The behaviour factor is estimated by dividing the peak ground
acceleration of the maximum spectrum with the peak ground acceleration of the
yield spectrum.
Keywords: behaviour factor, simulation, Latin Hypercube Sampling (LHS),
pushover, fibre elements.
1 Introduction
Modern seismic codes focus on the ability of the structures to dissipate energy
through large inelastic deformations. Structural elements are designed with
special demands in order to be capable of an appropriately ductile behaviour. In
this way, it is ensured that the whole structure will be able to respond
inelastically to the design earthquake. The expected inelastic response of the
structures is taken into account, in the design of reinforced concrete structures,
by using the behaviour factor q, which divides the elastic response spectral
values to obtain the reduced (inelastic) design response spectrum. In codes
practice, the estimation of the behaviour factor q is based on simple empirical
relationships that give the same q values for a wide range of buildings.
Keywords
behaviour factor, simulation, Latin Hypercube Sampling (LHS),
pushover, fibre elements.
Related Book
Other papers in this volume
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