Abstract
Highly ductile fibres reinforced concrete (HDC) has the tensile strain-hardening behavior accompanied by multiple cracks. A steel reinforced HDC continuous deep beam (SRD-CDB) and a steel reinforced normal concrete continuous deep beam (SRC-CDB) were designed and tested to study their load-carrying capacities and deformability. Their failure patterns, load-deflection curves, stirrup strains, steel web strains and shear capacities were investigated. The load-carrying capacity and deformability of SRD-CDB were improved because HDC alleviated the damage and showed deformation compatibility with steel section and stirrups. Results calculated by direct strut-and-tie model are conservative for the design of SRC-CDB and SRD-CDB.
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