Bending resistance of composite section with partial shear connection according to EC4

Abstract

Bending resistance of a composite steel and concrete section apart from shape and dimensions of a cross section and mechanical characteristics of materials, depends also on type of shear connection, i.e. connectors and shear steel-concrete interface. In the paper, ductile and nonductile headed studs are considered. Bending resistance of composite sections with partial shear connection, which is a connection where a number of shear studs is smaller than necessary for fully plastic bending resistance of a section to be achieved, is analysed. The reduced bending resistance is found. The calculaton in accordance with Eurocode 4 is presented.

Nosivost na savijanje spregnutog preseka od čelika i betona pored oblika i dimenzija poprečnog preseka i mehaničkih karakteristika materijala, zavisi i od načina sprezanja, tj. tipova sredstava za sprezanja i oblikovanja kontaktnog (smičućeg) spoja između betona i čelika. U radu se koriste duktilni i neduktilni moždanici sa glavom. Određuje se nosivost na savijanje spregnutih preseka sa parcijalnim smičućim spojem u kome, za razliku od punog smičućeg spoja, broj moždanika nije dovoljan da se ostvari moment pune nosivosti, tako da se određuje redukovani moment nosivosti. Proračun se sprovodi prema Evrokodu 4.