Comparison Between Numerical and Experimental Results of the Hybrid Members Subjected to Bending and Shear

摘要

This paper presents experimental and numerical results of the hybrid members with several encased steel profiles subjected to bending and shear. These results are compared with each other on the load-bearing capacity, the strain distribution, the stress distribution, the slip distribution, the crack pattern, the failure modes. These steel-concrete composite structural elements belong to the so-called "hybrid" structures which are neither reinforced concrete structure in the sense of Eurocode 2, nor steel-concrete composite structures in the sense of Eurocode 4. Currently, there is no design calculation guide of the resistance for this type of structure in international standards. Therefore, the comparison between numerical and experimental results is performed to point out the mechanism of the load transfer and failure taking place within the hybrid members subjected to bending and shear. It is the basis for calibrating the proposed design method for hybrid members reinforced by several steel profiles. The six hybrid member specimens were prepared and tested at the Structures Laboratory of INSA Rennes, France. The structural response of all hybrid members specimens were simulated by a full 3D finite element model using the Abaqus software.