Ansys Finite Element Analysis Of Steel-Masonry Composite Wall-beam Structure

Steel-masonry wall-beams is the new underpinning technology. It does not require supports and construction templates, has a short construction period, and can shorten the maintenance cycle. So it can play the commercial value after the transformation as soon as possible. Previous pilot study results show that:In the specimen loading process, the lower steel-masonry underpinning beam formed integrally wall-beams architecture with the upper wall that arched brick under pressure and angle-steel underpinning beam rod consisted of wall beam force model. If compositive wall-beams underpinning structure do not set structural columns, the specimen will occur bureau compression failure. When structural columns are set, the specimen eventually destroy in the form of a wall-beam structure wall shear baroclinic. Structural columns can provide good lateral wall binding effect, and transmite directly a portion of the vertical load to the bearing, so load path is more reasonable, improving the carrying capacity of the specimens.Taking into account the impact of the wall height, joist section height and the angle dimensions on the mechanical behavior of composite structures, eight different steel-masonry portfolio underpinning structural models are analyzed. It analysis deeply the stress-strain law of the structure underpinning in the vertical loads, as well as the role of structural columns. The results show that the underpinning structure meets the force forms of the wall beams:the lower steel-masonry underpinning beam formed integrally wall-beams architecture with the upper wall that arched brick under pressure and angle-steel underpinning beam rod consisted of wall beam force model. This is more consistent with the previous experimental results. The ANSYS finite element analysis of the steel-masonry composite structure is verified reasonablly.Through the different specimens nonlinear finite element analysis in the same circumstances, the influence of the wall height, joist section height and angle steel joists sectional dimensions on the composite structure are summitted. The results show that:with the same circumstances, a great influence of the wall height on the stress distribution of the combination structure. If the wall height is too small, wall-beam structure is difficult to render the mechanical characteristics, and ensure the bearing capacity and benefits of the compositive wall-beams can not be ensure. Increase of joist section height can enlarge the stiffness of the composite structure and resistance deformation, but the influence on the stress distribution of the structure is relatively smaller. While increases in size of angle can also increase the stiffness of the structure and reduce the deformation of the structure, the overall structure also improved ductility and the capacity of the composive structures.