Load-Slip Relationship in Modified Push-Out Test (Experimental Work)


In this work, a modified push-out test is proposed to study the load-sliprelationship in steel-concrete-steel sandwich beams. This relation is one of themost important factors that are required in the analysis and design of steelconcrete-steel sandwich beams with partial interaction. The diameter of theconnector is assumed to be variable while the other parameters are keptconstants. The modification in this test in comparison with the standard testconcentrated on the use of steel tube- concrete slab- steel tube instead of concreteslab- steel (I-Section)- concrete slab (in Standard Test) in order to be morecompatible than the standard test in modelling the steel-concrete-steel sandwichor double-skin beams. The stud is suggested to be threaded along the wholelength, connected to the tube by a nut (the separation between the layers iseliminated and only interlayer slip is assumed to exist) and the connector passesto the other tube through the concrete slab (thus the connector is subjected todouble shear force). These cases maximize the function of this stud. Five dialgages are used; one at the base, and two at each side in order to measure the slipat each stud. An experimental relationship of load-slip is carried out to simulatethe behaviour of this type of connection in steel-concrete-steel sandwichconstruction.