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http://dx.doi.org/10.11112/jksmi.2017.21.6.035

An Examination of the Minimum Reinforcement Ratio for Reinforced Concrete Flexural Members  

Choi, Seung-Won (Department of Civil and Construction, Chosun College of Science & Technology)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.21, no.6, 2017 , pp. 35-43 More about this Journal
Abstract
The minimum reinforcement ratio is an important design factor to prevent a brittle failure in RC flexural members. A minimum reinforcement ratio is presented by assuming an effective depth of cross-section and moment arm lever in CDC and KHBDC. In this study, it suggests that a rational method for minimum reinforcement ratio is calculated by material model and force equilibrium. As results, a minimum reinforcement ratio using a p-r curve in KHBDC is evaluated about 52~80% of recent design code's value and it induces an economical design. And also, a ductility capacity in case of placing this minimum reinforcement amount is evaluated about 89% of recent design code's value, but ductility in a member is 7 or more, so it has a sufficient ductility capacity. Therefore, it is judged that a minimum reinforcement ratio using p-r curve has a theoretical rationality, safety and economy in a flexural member design.
Keywords
Minimum reinforcement ratio; CDC; KHBDC; P-r curve; Ductility capacity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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