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Sensitivity in Shear Strength of Longitudinally Reinforced Concrete Beams to Fracture Energy of Concrete

Gustafsson, Per-Johan LU and Hillerborg, Arne (1988) In ACI Structural Journal 85(3). p.286-294
Abstract
The size effect in shear strength of longitudinally reinforced beams is studied by means of a nonlinear fracture mechanics model. According to the actual theoretical study, structure size should be normalized to an intrinsic length parameter of the concrete. This length parameter is proportional to the fracture energy G//F of the concrete. It is found that the shear strength of a concrete beam may be equally sensitive to G//F as to the tensile strength of the concrete. It is concluded that G//F should be measured during experimental studies of the shear strength of beams and the punching strength of slabs. A simple method for considering the intrinsic length parameter in existing shear strength formulas is proposed.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
beams (supports), building codes, concrete slabs, punching shear, cracking (fracturing), dimensional analysis, energy, reinforced concrete, shear strength, tests, Structural Research
in
ACI Structural Journal
volume
85
issue
3
pages
286 - 294
publisher
American Concrete Institute
external identifiers
  • scopus:0024015777
ISSN
0889-3241
language
English
LU publication?
yes
id
3d544822-dba3-485c-8c5b-387629bfbae7 (old id 4091658)
date added to LUP
2013-10-14 16:45:15
date last changed
2017-08-06 04:33:56
@article{3d544822-dba3-485c-8c5b-387629bfbae7,
  abstract     = {The size effect in shear strength of longitudinally reinforced beams is studied by means of a nonlinear fracture mechanics model. According to the actual theoretical study, structure size should be normalized to an intrinsic length parameter of the concrete. This length parameter is proportional to the fracture energy G//F of the concrete. It is found that the shear strength of a concrete beam may be equally sensitive to G//F as to the tensile strength of the concrete. It is concluded that G//F should be measured during experimental studies of the shear strength of beams and the punching strength of slabs. A simple method for considering the intrinsic length parameter in existing shear strength formulas is proposed.},
  author       = {Gustafsson, Per-Johan and Hillerborg, Arne},
  issn         = {0889-3241},
  keyword      = {beams (supports),building codes,concrete slabs,punching shear,cracking (fracturing),dimensional analysis,energy,reinforced concrete,shear strength,tests,Structural Research},
  language     = {eng},
  number       = {3},
  pages        = {286--294},
  publisher    = {American Concrete Institute},
  series       = {ACI Structural Journal},
  title        = {Sensitivity in Shear Strength of Longitudinally Reinforced Concrete Beams to Fracture Energy of Concrete},
  volume       = {85},
  year         = {1988},
}