Journal: IPSI Transactions on Internet Research

Comparative Analysis of Reinforced Concrete Structure with Traditional and Decoupled
Masonry Infill Under Earthquake

Author: Krtinić, Nemanja

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Reinforced concrete (RC) frame structures with masonry infill are a popular form of construction in many earthquake-prone regions all over the world. Throughout the Balkans, but especially in Serbia, there is a substantial number of school buildings with this structural system, which are located in high seismic hazard areas. Although infill walls are considered non-structural elements and are usually neglected in the design process, field observations after past earthquakes have shown that they interact with the structural system and experience severe damage or total collapse when subjected to seismic loads. This paper presents the results of comparative numerical analyses on three models, i.e. bare frame model (model 1) and bare frame models with traditional and decoupled masonry infill (models 2 and 3). First, a modal response spectrum analysis was performed on the elastic model, followed by non-linear "Pushover" and "Time history" analyses. The most common damage configurations caused by the irregular distribution of infill walls, such as the “short” column effect and the "soft-storey” mechanism, were avoided using the INODIS system that decouples masonry infills from the surrounding frame. The main aim of this paper is to investigate the effect of decoupling masonry infill using the INODIS system and then compare with the results of the bare frame and traditionally infilled frame models. The results of nonlinear analyses show that the model's behaviour with isolated infill walls is similar to the bare frame model. In contrast, the behaviour of the model with traditional infill is significantly different and requires a complex numerical model. The practically negligible difference in the behaviour of models 1 and 3 led us to conclude that there is a large potential for using the bare frame model in the design of RC frame buildings with masonry infill with the proper use of the INODIS system. Index Terms: Earthquake, Pushover, Time history, Traditional masonry infill, Decoupled masonry infill


Earthquake, Pushover, Time history, Traditional masonry infill, Decoupled masonry infill

Published in: IPSI Transaction on Internet Research (Volume: 20, Issue: 1)
Publisher: IPSI, Belgrade

Date of Publication: January 1, 2024

Open Access: CC-BY-NC-ND
DOI: 10.58245/ipsi.tir.2401.10

Pages: 95 - 104

ISSN: 1820 - 4503


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Nemanja Krtinić

Nemanja Krtinić is a Young Researcher with the Faculty of Civil and Geodetic Engineering, University of Ljubljana, Slovenia.
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Cite this article

Krtinić, Nemanja,
"Comparative Analysis of Reinforced Concrete Structure with Traditional and Decoupled Masonry Infill Under Earthquake",
IPSI Transactions on Internet Research, vol. 20(1), pp. 95-104, 2024.