Volume 7, Issue 1 (March 2009)                   IJCE 2009, 7(1): 19-26 | Back to browse issues page

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Maghsoudi A, Akbarzadeh Bengar H. Diagonal Compression Criterion for Compression Reinforcement Ratio in HSRC Flexural Members. IJCE 2009; 7 (1) :19-26
URL: http://ijce.iust.ac.ir/article-1-192-en.html
Abstract:   (10903 Views)

Limit to the tension reinforcement ratio 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 ( and ) are not associated with

any rational derivation. In this paper, a quantitative measure to evaluate an upper limit to the compression

reinforcement ratio of flexural HSRC members is proposed. The quantitative criterion to 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.

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