This paper deals with flexural investigation of a type of steel-concrete composite beam structure able to provide an adequate bond between steel and concrete elements through the application of a simple steel reinforcement shear connector design, steel reinforcing bars bent into L-shapes. The cross sections involve inverted steel T-beam being embedded within reinforced concrete (RC) flange of the slab. The paper concentrates on elastic and elastic-plastic behaviour of steel inverted T-beam entrenched within a reinforced concrete flange at the top. In addition, shear connection was investigated in detail. Finally, some suggested designing equations and curves simulating the elastic, elastoplastic and full plastic experimental moments were developed. The plastic theoretical study results coincides with the experimental behaviour of the developed model.
The aim of this paper is to investigate analytical and experimental flexural behavior of a latest composite beam model. The cross section comprises tapered inverted steel T-beam embedded within the RC concrete slab, by simple steel reinforcement bar bent in to L-shape as shear connectors welded to web. The slab is reinforced with longitudinal and transverse bars fixed on the top of L-shape connectors. The paper shows the structural behavior difference between the composite model with a tapered inverted steel T-beam and the composite model with nontapered inverted steel T-beam. Failure modes either by cracking of compression concrete or L-shape connection failure, will be investigated. Suggested designing curves and valuable equations will be presented. This model is of a great bid for roofs and fast accommodations, due to its convenience, flexibility, cost-effective and availability of its low-priced components.
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