This research is concerned with behavior of composite steel-concrete arches
under static load. For this purpose, eight models of composite steel-concrete arches
are fabricated as test specimens.According to their supporting systems, the eight
fabricated specimens are equally divided into Hinge-Roller and Hinge-Hinge
supported arches in which varied numbers of shear connectors are used to investigate
the effects of support conditions and degree of shear connection on the behavior of
the composite arches. The specimens are tested under monotonically increasing point
load applied on their crowns (on the top of concrete slabs).
The mechanical properties of the used materials are determined by laboratory
tests. Push-out tests on three specimens, fabricated for this purpose, are also carried
out to determine the properties of the stud shear connectors.
It is concluded that increasing the number of connectors tends to increase the
ultimate load capacity and decrease both displacement and slip in the composite
arches. This trend is considerably satisfied when the horizontal movements of
supports are constrained (Hinge-Hinge supported arches).