Bending Behavior Analysis Of Steel-bamboo Box-shaped Combination Beam

Cold-formed steel-bamboo composite box beam works through the structural adhesives by which Cold-formed steel and bamboo plywood beam will be combined into a whole, work together and coordination deformation. Although the study time of the composite beams is not too long, but because of its complex mechanical properties, compared with whether wood structure or steel structure, the composite structure study still won’t be enough.In this paper, the latest test of the Cold-formed steel-bamboo composite box beam was used, based on bending performance, adopted a nonlinear finite element analysis method, with the aid of the finite element analysis software ABAQUS, the three-dimensional finite element numerical models were established to analyze the whole process test nonlinear numerical simulation, the calculation results agree well with the test data.By using the model, the paper analyzed the deformation mechanism of cold-formed steel-bamboo composite box beam, and discussed some single parameter (The strength of steel grade, bamboo plywood thickness, the width, height and thickness of cold-steel) for bending influence on the performance of the composite beams, and based on this, did the orthogonal analysis, the factors that influence extent.