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Quantifying the seismic response of structures with flexible diaphragms
Author(s) -
Sadashiva Vinod K.,
MacRae Gregory A.,
Deam Bruce L.,
Spooner Matthew S.
Publication year - 2012
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/eqe.1187
Subject(s) - structural engineering , stiffness , flexibility (engineering) , diaphragm (acoustics) , displacement (psychology) , deformation (meteorology) , engineering , seismic analysis , plane (geometry) , geology , geometry , vibration , physics , mathematics , acoustics , psychology , statistics , oceanography , psychotherapist
SUMMARY Floor diaphragm in‐plane stiffness affects building response to horizontal ground accelerations. This paper describes a series of elastic and inelastic time history analyses of symmetric structures with different deformation types, configurations and heights to quantify these effects. It is shown that displacements of single storey elastically responding structures tend to be most significantly affected by diaphragm flexibility. Analyses of these structures were cross‐verified by a closed‐form mechanics‐based formulation developed to describe the response. Simple relationships were proposed to allow designers to conservatively estimate the increase in peak in‐plane displacement resulting from diaphragm flexibility. Copyright © 2012 John Wiley & Sons, Ltd.