Abstract
One of the newest contributions to the science of bridges are steel-concrete composite bridges with encased perforated steel strips. Their main advantages are their low height, low usage of materials and therefore lower cost of the bridge. They are mainly used as short span railway bridges (under 20m of length). Main focus of today researchers and structural engineers in this area is to improve the geometry of the steel strip – and therefore find new types with lower usage of material and higher shear strength. At Technical University of Košice, Faculty of Civil Engineering, several new types have been developed and tested. In order to properly measure the shear strength, the push-out tests had to be carried. They track the dependence between load (typed by loading conditions) and slip. These experiments were performed at Laboratory of Excellent Research in Košice. In this article is closely described software modelling of a strip developed at Faculty of Civil Engineering, the experiments performed as well as the results found.
Highlights
Numerical study of performed experiments is important in order to fully watch and understand inside stresses and behaviour of the specimen during the testing as well as for the parametric study.Several papers were published about this topic in the past
The shear resistance was obtained at the same LC – 750kN, but presented with 0.5mm higher slip, which manifested the safe side of the FEM model
The finite element model was created in ABAQUS software to simulate the real experiment of push-out tests
Summary
Numerical study of performed experiments is important in order to fully watch and understand inside stresses and behaviour of the specimen during the testing as well as for the parametric study. Oguejiofor and Hosain have described one of the first finite element analysis of push-out tests of specimens resisting shear which contained steel perfobond strip, as early as 1995. They created the numerical model in ANSYS [1]. Bouchair et al did the analysis of push-out tests of specimens with shear studs in ATENA software [2]. In this article the FE modelling approach of the push-out tests performed onto the specimens with continuous shear connectors using ABAQUS/CAE software is closely described
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