Scale?dependent maximum reinforcement percentage in reinforced concrete beams

نویسندگان

چکیده

The Cohesive/Overlapping Crack Model is able to describe the transition between cracking and crushing failures occurring in reinforced concrete beams by increasing beam depth and/or steel percentage. Within this Nonlinear Fracture Mechanics model, tensile compressive ultimate behaviors of matrix are modeled through two different process zones that advance independently one another. Moreover, model investigate local mechanical instabilities structural behavior structures: snap-back snap-through, which due or fracture, at end plastic plateau, generated unstable growth zone. In context, application highlights ductility, represented rotation capacity a element subjected bending, decreases as reinforcement percentage increase. Thus, scale-dependent maximum beyond occurs prior yielding demonstrated exist. particular, results be inversely proportional h0.25, h being depth. way, rational quantitative definition over-reinforcement provided depending on

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ژورنال

عنوان ژورنال: Structural Concrete

سال: 2021

ISSN: ['1464-4177', '1751-7648']

DOI: https://doi.org/10.1002/suco.202000573