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Seismic response and design of RC structures with plan‐eccentric masonry infills
Author(s) -
Fardis M. N.,
Bousias S. N.,
Franchioni G.,
Panagiotakos T. B.
Publication year - 1999
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/(sici)1096-9845(199902)28:2<173::aid-eqe810>3.0.co;2-1
Subject(s) - structural engineering , masonry , infill , brickwork , engineering , eccentricity (behavior) , earthquake shaking table , geology , stiffness , displacement (psychology) , parametric statistics , geotechnical engineering , mathematics , psychology , statistics , political science , law , psychotherapist
The bidirectional response of a two‐storey RC frame structure with two adjacent sides infilled is studied through shaking table tests and non‐linear dynamic analyses. The pre‐cracking stiffness of the infills is large enough to impose twisting of the infilled structure about the common corner of the two infilled sides, with predominant period close to that of translation of the symmetric bare structure in the two horizontal directions. Parametric analyses and test results show that the peak displacement components of the corner column of the two open sides are about the same as (or slightly less than) those of the bare structure under the same bidirectional excitation, but take place simultaneously. This simultaneity of peak local demands from the two components of the motion seems to be the only effect of plan‐eccentric infilling that needs to be taken into account in the design of the RC structure. Despite their very high slenderness (height‐to‐thickness ratio of about 30), infill panels survive out‐of‐plane peak accelerations of 0·6 g at the base of the structure or 1·3–1·75 g at their centre. Copyright © 1999 John Wiley & Sons, Ltd.