Effect of infill walls on structural behavir of rc buildings with vertical irregularities

2017-01-09
Akansel, Vesile Hatun
Yakut, Ahmet
Moehle, Jack
Show full item record
121
views
0
downloads
The building structures are generally irregular and regularity is only an idealization that rarely occurs. Structural irregularity may be classified as in- plan and in-elevation. In this study, vertical irregularities are in consideration since less research has been done compared to the in-plan irregularities. Vertical irregularities designated in buildings are due to many reasons such as mass, stiffness and strength irregularity and the dynamic behavior of the structures are totally related with those three parameters. Previous researchers focused on mostly strength and stiffness properties of the models employed. In practice, infill walls may become one of the reasons of vertical irregularity resulting in the soft story and short column. Misapplication or architectural aesthetics may result in unexpected failures at story columns due to short column effects. On the other hand, recent studies and seismic performance of RC buildings from recent earthquakes showed that infill walls have a significant effect on the strength capacity of the building and should be modeled in analysis and design. To be able to investigate the effect of vertical irregularities due to Infill walls, i.e. soft story effect, a reliable and accurate infill wall model that simplifies modeling and decreases computational effort is needed. Thus, the most appropriate modeling approach for infill walls will be investigated to be able to get reasonably good and accurate results from the numerical models. In this study ASCE, 41 strut methodology is compared with experimental results and is modified for future studies. OpenSEES is used for modeling and comparison of the numerical models with experiments. Vertical irregularities are assigned to the regular frames based on stiffness and strength change. Computed demands are compared with the design parameters defined in IBC (International Building Code) and TEC 2007 (Turkish Earthquake Code).
Vertical irregularity, Infill wall, MRF, RC
https://hdl.handle.net/11511/78693
https://www.wcee.nicee.org/wcee/article/16WCEE/WCEE2017-1635.pdf
16th World Conference on Earthquake Engineering, 2017
Department of Civil Engineering, Conference / Seminar

Suggestions

Effect of soft story on seismic performance of reinforced concrete buildings
Akansel, Vesile Hatun; Yakut, Ahmet; Gülkan, H. Polat; Department of Civil Engineering (2017)
Real structures are almost always irregular, as perfect regularity is an idealisation that very rarely occurs. Structural irregularities may vary dramatically in their nature and, in principle, are very difficult to define. In comparison with research efforts dealing with horizontally irregular structures, studies aimed at predicting the behavior of structures with rough layouts in elevation are small in number. Due to drawbacks of irregular structures under seismic excitations, engineers are less confident...
Influence of ground motion intensity on the performance of low- and mid-rise ordinary concrete buildings
Akkar, S; Sucuoğlu, Haluk; Yakut, Ahmet (2004-05-21)
Fragility functions are determined for low- and mid-rise ordinary concrete buildings. A hybrid approach is employed where building capacities are obtained from field data and their dynamic responses are calculated by response history analysis. Lateral stiffness, strength and deformation capacities of the sample buildings are determined by pushover analyses. Uncertainties in lateral stiffness, strength and damage limit states are expressed by using statistical distributions. The seismic deformation demands o...
Influence of Clay Tile Brick Infill Walls on Seismic Response of Buildings
Yakut, Ahmet (2013-07-17)
Majority of buildings in Turkey and in most developing countries are made with reinforced concrete frames infilled with clay tile brick walls. Despite this, influence of these walls is not accounted for in design. Past earthquake observations have shown that the infill walls have great influence on performance of buildings. In this paper, influence of the brick infill walls on strength and stiffness of RC buildings are presented through analytical results obtained for some typical buildings. Comparison of r...
Effects of masonry infill walls on the seismic performance of buildings
Öztürk, Mehmet Selim; Akyüz, Uğurhan; Department of Civil Engineering (2005)
In Turkey, in most of the reinforced concrete buildings, hallow masonry infill walls are used as a non-structural element, during design stage, their contribution to overall building behavior is not well known. Observations made after the earthquakes revealed that these non-structural elements had beneficial effects on the lateral capacity of the building. In this study, the contribution of the hallow masonry infill walls to the lateral behavior of reinforced concrete buildings was investigated. For this pu...
Influence of deformable geofoam bufers on the static and dynamic behaviors of cantilever retaining walls
Ertuğrul, Özgür Lütfi; Özkan, M. Yener; Department of Civil Engineering (2011)
Static and dynamic interaction mechanism of the retained soil-compressible geofoam buffer and yielding retaining structures requires further investigation. The present study, initiated on this motive, discusses the results of 1-g physical model tests and numerical analyses of cantilever retaining walls with and without deformable geofoam buffers between the wall and cohesionless granular backfill. 0.7m high walls with various wall thicknesses were utilized in the physical modeling. Dynamic tests were carrie...
Citation Formats
V. H. Akansel, A. Yakut, and J. Moehle, “Effect of infill walls on structural behavir of rc buildings with vertical irregularities,” presented at the 16th World Conference on Earthquake Engineering, 2017, Santiago Chile, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/78693.
METU IIS - Integrated Information Service open@metu.edu.tr