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Performance evaluation of built-up composite beams fabricated using thin-walled hollow sections and self-compacting concrete
Journal article   Peer reviewed

Performance evaluation of built-up composite beams fabricated using thin-walled hollow sections and self-compacting concrete

Yaser Sahloddin, Ahmad Dalvand, Masoud Ahmadi, Hossein Hatami and Mohammad Houshmand Khaneghahi
Construction & building materials, v 305, 124645
25 Oct 2021

Abstract

Cementitious Composite beam Flexural behavior Self-compacting concrete Thin-walled sections
•The innovative built-up composite beam was presented.•The design flowchart was developed to determine the ultimate bearing capacity.•Effects of hallow sections spacing and slab depth were studied. The present study proposes an innovative steel–concrete composite beam fabricated using self-compacting cementitious (SCC) composite, thin-walled steel plates, and hollow sections. In order to validate the performance of the proposed composite beam, the experimental investigation was conducted in terms of flexural strength, ductility, flexural stiffness, energy dissipation capability, and failure mode. Furthermore, the hallow sections spacing, slab depth, and SCC mixtures wereconsidered as design variables in order to probe into their effects on the structural performance of the proposed composite beam. The results indicated that hollow section spacing and fiber percentage had the most influence on load capacity and energy absorption of the composite beams. Further, the interaction between slab integration significantly prevented concrete crushing of failed composite beam. Moreover, the composite beam introduced in this study showed higher stiffness, ductility, and energy dissipation compared to the conventional one. Ultimately, a design flowchart was developed to determine the ultimate bearing capacity of the proposed composite beam.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Construction & Building Technology
Engineering, Civil
Materials Science, Multidisciplinary
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