Seismic Analysis And Design Of A Precast
Concrete Framed Structure
Author(s)
A. G. Vlassis, C. C. Spyrakos & S. Tsoukantas
Abstract
This study presents the analysis and design of a single-storey industrial building
planned to serve as a repair and maintenance facility for the Greek Railway
Organization (GRO) near Athens. The structural system is a precast concrete
frame. Several issues regarding modelling and analysis of the structure are
identified and discussed. In order to increase the stiffness in one of the two
orthogonal directions of the structure, diagonal steel braces interconnecting the
upper part of the concrete columns are used. Two sets of analysis are performed
to investigate the effect of the braces on the structural response. It is shown that
seismic behaviour can be significantly improved with the addition of the new
members. Furthermore, dynamic analysis is carried out to examine the effect of
foundation on structural response. It is found that, due to terrain irregularities
and arrangement of the structural system, use of single footings and link beams
in one direction only is not adequate to uniformly distribute the seismic loads. It
is shown that pile foundation can have a beneficial impact on behaviour by
alleviating the effects of the inclined embankment and increasing the system
stiffness. The enhancement of structural behaviour is further proved by the fact
that the building resting on piles can meet the collapse prevention requirements
even if it is analyzed under seismic loads corresponding to the highest seismic
zone in Greece, with a maximum ground acceleration A=0.36g.
Keywords: precast concrete frame, diagonal braces, pile foundation, collapse
prevention.
Keywords
precast concrete frame, diagonal braces, pile foundation, collapse
prevention.
Related Book
Other papers in this volume
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