BENDING CAPACITY OF COMPOSITE COLDFORMED STEEL AND CONCRETE OF A STRIP PLATE STRUCTURE

This paper presents experimental and analytical studies of composite cold-formed steel and concrete of a strip plate structure. Observations were carried out for six specimens. The first three specimens were reinforced concrete structures as the reference to the other three specimens of composite cold-formed steel and concrete structures. All specimens had equal section width of 150 mm. There were three section depths, i.e. 80 mm, 100 mm, and 120 mm. The specimen was placed on the simple support and was subjected by two point loads which increased monotonically until ultimate condition reached. Flexural crack on the specimen were observed. Crash on the top fiber of composite specimen of 80 mm was found. Flexural crack on the concrete part and fracture on the cold-formed steel occurred on the specimen of 120 mm which caused the specimen split into two parts. Ultimate bending capacities of composite specimens from experimental test were compared to analytical calculations using RCCSA software. Good agreements were achieved between these two methods.