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The behaviour of transverse bar reinforcement of slim floor beams in precast floors

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
OtsikkoEurosteel 2014
Alaotsikko7th European Conference on Steel and Composite Structures, 10.-12.9.2014, Naples, Italy
ToimittajatRaffaele Landolfo, Federico Mazzolani
JulkaisupaikkaBelgium
KustantajaECCS - European Convention for Constructional Steelwork
Sivumäärä6
ISBN (elektroninen)978-92-9147-121-8
TilaJulkaistu - 2014
Julkaistu ulkoisestiKyllä
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa

Tiivistelmä

Typical slim floor construction consists of precast hollow core slabs supported on shallow steel beams. The steel beams are contained within the depth of the floor slab and the floor beams can be detailed as either composite or bare steel beams. The joints between precast elements are reinforced with transverse steel rebars and are then filled with concrete. The transverse bars are installed through holes in the web of a special perforated steel beam profile. In this research the behaviour of the transverse rebars is studied numerically using Abaqus/Cae FEM-modelling software. The aim of this study is to investigate the effects of the transverse reinforcement on the composite beam behaviour and on the crack formation at the longitudinal interface between steel beam web and concrete. The numerical modelling of the transverse rebars and the local behaviour of rebar within the cracked area is of special interest. The numerical analysis results are compared with and validated by experimental test results carried out with similar floor beam structures. Based on the analysis results, the load paths within the slim floor construction and the effect of transverse reinforcement on floor beam behaviour are discussed.

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