Numerical evaluation of mixed steel-concrete structures including joint behaviour.

Abstract

The construction industry is continuously searching new optimal solutions. Mixed steel-concrete structures are therefore promising options that profit from both materials according to their best performance. This paper investigates the response of this type of structures by means of numerical computations. The multi-storey building structure erected in Cardington for testing in 1993 is used as study case. Two different models have been developed for comparison. One model is based on the "original" structure which represents a reference steel solution. In the other model a mixed steel-concrete solution is implemented. The analysis includes the influence of the joint behaviour on the structural response. Models with rigid and semi-rigid joint modelling are compared. Based on a 1 st order linear elastic, buckling and 2 nd order linear analysis, the results of both structural solutions are presented and discussed.