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Experimental study on collapse load of stiffened panels with cutouts
Published in Elsevier Science Ltd, Exeter, United Kingdom
1999
Volume: 52
   
Issue: 2
Pages: 235 - 251
Abstract
Experimental investigations are carried out up to collapse on eighteen stiffened steel plates having initial imperfections under uniaxial compression with simply supported boundary conditions on both loading and unloading edges. The thickness of the flange plates is varied as 4 mm and 5 mm respectively. Three types of commercially available open section rectangular flats are used as stiffeners. Six panels without cutout, six panels with square cutout which extends the full width in between stiffeners (d/b=1.0), four panels with rectangular cutout (d/b=1.5) and two panels with reinforced rectangular cutout are fabricated. The initial geometric imperfections such as plate imperfection Δ(x), overall imperfection of the whole panel Δ(sx) and torsional imperfection in stiffener Δ(sy) are measured for all panels fabricated. The axial deformation of the whole panel, out-of-plane deflections and strains along the midsection of the panels measured during the tests is discussed. The reduction in strength of the panels due to the presence of square cutout, rectangular cutout and increase in strength due to reinforcement around rectangular cutout are calculated based on the experimental observations.Experimental investigations are carried out up to collapse on eighteen stiffened steel plates having initial imperfections under uniaxial compression with simply supported boundary conditions on both loading and unloading edges. The thickness of the flange plates is varied as 4 mm and 5 mm respectively. Three types of commercially available open section rectangular flats are used as stiffeners. Six panels without cutout, six panels with square cutout which extends the full width in between stiffeners (d/b=1.0), four panels with rectangular cutout (d/b=1.5) and two panels with reinforced rectangular cutout are fabricated. The initial geometric imperfections such as plate imperfection Δx, overall imperfection of the whole panel Δsx and torsional imperfection in stiffener Δsy are measured for all panels fabricated. The axial deformation of the whole panel, out-of-plane deflections and strains along the midsection of the panels measured during the tests is discussed. The reduction in strength of the panels due to the presence of square cutout, rectangular cutout and increase in strength due to reinforcement around rectangular cutout are calculated based on the experimental observations.
About the journal
JournalData powered by TypesetJournal of Constructional Steel Research
PublisherData powered by TypesetElsevier Science Ltd, Exeter, United Kingdom
ISSN0143974X
Open AccessNo
Concepts (19)
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    Compression testing
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    Compressive strength
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    Deflection (structures)
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    Deformation
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    Plates (structural components)
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    Stiffness
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    Strain measurement
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    Structural loads
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    Structural panels
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    COLLAPSE LOAD
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    RECTANGULAR CUTOUT
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    REINFORCED RECTANGULAR CUTOUT
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    SQUARE CUTOUT
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    Stiffened panels
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    Uniaxial compression
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    Steel structures
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    Collapse
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    Experimental study
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    Steel