Volume 5, Issue 2 (June 2007)
IJCE 2007, 5(2): 156-167 |
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Maghsoudi A, Akbarzadeh Bengar H. Diagonal Compression Criterion on Compression Reinforcement Ratio in Flexural HSRC Members. IJCE 2007; 5 (2) :156-167
URL: http://ijce.iust.ac.ir/article-1-321-en.html
URL: http://ijce.iust.ac.ir/article-1-321-en.html
Abstract: (21562 Views)
Limit to the tension reinforcement ratio ( ρ) in flexural high strength reinforced concrete
(HSRC) members is based on the requirement that tension failure as sufficient rotation capacity are
ensured at ultimate limit state. However, the provisions for the total amount of longitudinal
reinforcement ratio ( ρ and ρ’) are not associated with any rational derivation. In this paper, a
quantitative measure to evaluate an upper limit to the compression reinforcement ratio ρBmax of
flexural HSRC members is proposed. The quantitative criterion to ρBmax can be derived from i) steel
congestion and ii) considerations that are related to the diagonal compression bearing capacity of
the members.
In this paper it is shown that, when shear loading is dominant, the limit to is set by the diagonal
compression criterion. Parameters that affect this limit are deeply investigated and the expressions
were derived for different end conditions, to provide an additional tool for a better design and
assessment of the flexural capacity of HSRC members.
Type of Study: Research Paper |
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