Time-dependent behaviour of simply-supported steel-concrete composite beams

Abstract

A theoretical and experimental study of the time-dependent behaviour of composite steel-concrete structural members has been undertaken at the University of New South Wales. As part of the experimental investigation, long-term static load tests were carried out on four simply-supported composite steel-concrete beams. The deformations were monitored for a period of about 250 days, as were the creep and shrinkage characteristics of concrete specimens under the same ambient conditions as the test beams. Pushout tests were also conducted on the headed studs used as shear connectors in the test specimens, and slip deformations and slip strains were recorded for two different connector densities. In this Paper transverse deflexions are shown to agree well with a design proposal presented elsewhere. The experimental results presented here provide benchmark data for the calibration of more complex theoretical treatments that incorporate creep, shrinkage and connector slip.

Full-scale long-term experiments of simply supported composite beams with solid slabs

“…Despite the extensive analytical and numerical work carried out in the last two decades on the long-term behaviour of composite members, only very limited benchmarking experimental data are currently available in the literature [39][40][41][42][43][44]. In this context, this paper aims at providing new long-term experimental data to be used for benchmarking purposes.…”

State of the art on the time-dependent behaviour of composite steel–concrete structures

“…[66][67][68][69][70][71][72][73]. In the same period, the first long-term tests were carried out and highlighted the importance of accounting for partial shear interaction for their accurate predictions [57,[74][75][76][77][78].…”

Long-term deflection of cracked composite beams with nonlinear partial shear interaction: I — Finite element modeling

“…Four simply-supported composite beams tested by Bradford and Gilbert [30] were used for validation purposes. These beams were designated B1, B2, B3, and B4, respectively.…”