Masonry Infills With Window Openings
And Influence On Reinforced Concrete
Frame Constructions
Author(s)
D. J. Kakaletsis
Abstract
The influence of masonry infills with window openings on the seismic
performance of reinforced concrete (RC) frames designed according to current
code provisions is investigated. Seven third-scale, single-storey, single-bay
frame specimens were tested under reversed cyclic, quasi-static, horizontal
loading up to a drift level of 40‰. The parameters investigated include the
opening location and the infill compressive strength. The assessment of the
behaviour of the frames is attempted based on the observed failure modes,
strength, stiffness, ductility, energy dissipation capacity, and degradation due to
cycling. The experimental results indicate that the location of the window
opening must be as near to the edge of the infill as possible in order to provide an
improvement in the performance of the infilled frame. Specimens with strong
infills exhibited better performance than those with weak infills. For the
prediction of the lateral resistance of the studied single-bay, single-storey infilled
frames with window openings, a special plastic analysis method has been
employed with reference to typical damage modes. Furthermore, a continuous
force-deformation model based on an equivalent strut approach is proposed for
masonry infill panels containing window openings. The actual properties of the
infill are based on the assessment of its lateral resistance by the subtraction of the
response of the bare frame from the response of the infilled frame.
Keywords: infilled RC frames, window opening, experimental results, plastic
analysis, analytical modelling.
Keywords
infilled RC frames, window opening, experimental results, plastic
analysis, analytical modelling.
Related Book
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