RESEARCH ARTICLE


Modelling and Analysis of Infilled Frame Structures Under Seismic Loads



J. Dorji *, D.P. Thambiratnam
School of Urban Development, Queensland University of Technology, GPO Box 2434,2 George Street, QLD 4001, Australia.


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Creative Commons License
© Dorji et al.;

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the School of Urban Development, Queensland University of Technology, GPO Box 2434,2 George Street, QLD 4001, Australia. E-mail: jigme.dori@qut.edu.au


Abstract

In-filled frame structures are commonly used in buildings, even in those located in seismically active regions. Precent codes unfortunately, do not have adequate guidance for treating the modelling, analysis and design of in-filled frame structures. This paper addresses this need and first develops an appropriate technique for modelling the infill-frame interface and then uses it to study the seismic response of in-filled frame structures. Finite element time history analyses under different seismic records have been carried out and the influence of infill strength, openings and soft-storey phenomenon are investigated. Results in terms of tip deflection, fundamental period, inter-storey drift ratio and stresses are presented and they will be useful in the seismic design of in-filled frame structures.