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Why do I get a bending moment in the surface in the area of the column in my model, even though the surface has been provided with a line hinge?


Therefore, the surface to the right in Figure 1 is replaced by a moment in the area of the column because the surface is rigidly connected to the column (the surface itself has no line hinge). If you want to exclude this moment, you would have to create an additional line hinge for the right surface or provide the column with a member hinge.


Line hinge results Internal forces of line hinge


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