This paper provided an overview on the developments of the steel-elastic concrete composite (SECC) structures. 16 push-out tests and six beam tests were reported to demonstrate the ultimate strength behaviour of the SECC structure from the component level to the structure level. Three-dimensional finite element models (FEMs) have been developed to simulate the ultimate strength behaviour of the SECC structures. The developed FEMs considered the nonlinear mechanical properties of the elastic concrete and steels in the structure, geometric nonlinearities, and complex interactions among the headed studs, I-beam, and concrete slabs. Extensive validations of the numerical analyses against the reported 16 push-out tests and six beam tests proved that the developed FEMs offered reasonable simulations on the ultimate strength behaviour of the SECC structure from component level to the structural level in terms of ultimate resistances, load-slip (or deflection) behaviours, and failure modes. A subsequent parametric study was carried out to investigate the influences of the rubber content in the elastic concrete and strength of the I-beam on the ultimate strength behaviour of the SECC beams. Finally, step-by-step FE analysis procedures on the SECC structures were recommended based on these numerical studies and validations.
