The influence of the precast and overtopping cross-section joint on the static behaviour of composite concrete beams 

openaccess, Vol. 596 (4) 2022 / czwartek, 28 kwietnia, 2022

(Open Access)

Zając Jakub, Drobiec Łukasz, Grzyb Krzysztof, Kisiołek Artur. 2022. The influence of the precast and overtopping cross-section joint on the static behaviour of composite concrete beams. Volume 596. Issue 4. Pages 40-44. DOI: 10.15199/33.2022.04.07

Accepted for publication: 11.04.2022 r.

The article presents a study of composite prestressed beams. The scope of the research is to determine the influence of the shape of the interface cross-section joint on the static work of the beams. The elements were divided into beams with a natural joint surface and broken adhesion in contact. Preliminary tests were done on the beams with a rectangular cross-section and a flat interface surface. The leading research focused on beams with complex cross-sections. It has been proven experimentaly the beam, made of a rib-shaped precast element with broken adhesion, worked as partially composite from the beginning of the test. Before the first vertical crack occurred, the bending stiffness of the elementwith a broke adhesion interfacewas 14.9% lower than that of a fully bonded beam. In both beams, vertical cracks connect with cracks in the interface. Beams load capacity were achieved due to the crushing of the compression zone of the concrete overlay.
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mgr inż. Jakub Zając, Politechnika Śląska; Wydział Budownictwa ORCID: 0000-0001-6080-2994
prof. dr hab. inż. Łukasz Drobiec, Politechnika Śląska; Wydział Budownictwa ORCID: 0000-0001-9825-6343
mgr inż. Krzysztof Grzyb, Politechnika Śląska; Wydział Budownictwa ORCID: 0000-0001-9039-5015
dr inż. Artur Kisiołek, Wielkopolska Wyższa Szkoła Społeczno-Ekonomiczna; Wydział Ekonomiczny ORCID: 0000-0002-8815-6776

mgr inż. Jakub Zając, Politechnika Śląska; Wydział Budownictwa ORCID: 0000-0001-6080-2994