Скачать с ютуб Slender Columns | VIS Concrete Design в хорошем качестве

Slender Columns | VIS Concrete Design

Slender columns! they are pretty rare for concrete structures but could be a difficult beast if you run into some. VIS can make their design easier for you. First, set the general parameters… Geometric Imperfections… and second order effects… there are several options you have to choose from with care. If your analysis is a simple first order linear analysis, click here. The program will apply one of the simplified methods. These methods ultimately magnify the moments derived from analysis. It is required that you specify whether your columns are braced, or not. If your analysis is Non-linear with P-Δ, the moments from analysis already include the effects of global displacements. The simplified methods are still applied, but they need account only for columns local deformations. In other words, columns are treated as if braced. You can also do a more refined Non-linear P-Δ Analysis, with columns including several nodes, thus accounting for local deformation. In this case the analysis moments already include all second order effects and no further magnification is applied. You can choose which simplified calculations method to use, Nominal Stiffness or Nominal Curvature. Be advised that “Nominal Curvature” may underestimate moments when axial loads are near buckling. Please refer to the discussion in our post “Second Order Effects on Concrete Columns”: See more here https://www.vis-concretedesign.com/wh...   / visconcretedesign      / @visconcretedesign9342     / vis---concrete-design-software