Punching shear strength of flat slab edge column connections with outward eccentricity of loading
File(s)
Accepted version
Author(s)
Albuquerque, NGB
Melo, GS
Vollum, RL
Type
Journal Article
Abstract
Thirteen tests were carried out to investigate the effect of outwards eccentricity on the punching resistance of flat slab edge column connections. The slabs measured 2350 x 1700 mm (92.5 x 66.9 in.) on plan and were 180 mm (7.1 in.) thick. One end of the slab was supported on a 300 mm (11.8 in.) square column with a boot at its base for imposition of eccentricity. The other end was supported on a fixed roller support that extended across the full slab width of 1700 mm (66.9 in.). Four point loads were applied to the unsupported slab edges. The tested variables were eccentricity and the areas of flexural, shear, and torsion reinforcement. Presented test results include reinforcement strains, displacements, rotations, crack patterns, failure modes, and ultimate loads. The ACI 318 design procedure for punching shear at edge columns with outwards eccentricity is shown to be overly conservative unless the interaction between punching shear and unbalanced moment is reduced as permitted by the code. The EC2 design procedure is unsatisfactory and a modification is proposed.
Date Issued
2016-09-01
Date Acceptance
2016-07-06
Citation
ACI Structural Journal, 2016, 113 (05), pp.1117-1129
ISSN
0889-3241
Publisher
American Concrete Institute
Start Page
1117
End Page
1129
Journal / Book Title
ACI Structural Journal
Volume
113
Issue
05
Copyright Statement
© Copyright 2016, American Concrete Institute. All rights reserved, including the making of copies by any means, including but not limited to downloading of HTML files, or by electronic, photoduplicating, or other mechanical device, printed, written or oral, or recording for sound or visual reproduction for use in any knowledge or retrieval system or device, or recording for sound unless permission is obtained from the copyright proprietors.
Subjects
Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Materials Science, Multidisciplinary
Engineering
Materials Science
edge columns
flat slab
punching shear
outward eccentricity
slab-column connections
Civil Engineering
0905 Civil Engineering
1202 Building
Publication Status
Published