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Can't recover from crash zone in performance analysis
- Thread starter kgncnk
- Start date
Hello, I have reviewed your project. The number of reinforcements in the columns coming out of the collapse zone is small compared to the column dimensions. Therefore, these columns need to be strengthened. For example, there are fi 12 reinforcements on the Ground Floor S107 column. At the same time, you need to check the amount of reinforcement and the spacing of the reinforcement in the sheathed columns. For example, the sheathing reinforcements of the S115 column in the 1st basement floor are not applicable. These accessories also affect the performance analysis. In general, rebars should be locked before checking the placement and number of reinforcements in all elements and performing a performance analysis. You can select the option "There is stirrup density" in the "Performance analysis" tab of the "Column Settings" Window, which is opened by clicking on the columns twice. In this case, it will be assumed that wrapped concrete material is used in the middle of the column, and the wrapped concrete material model will be calculated automatically according to the stirrup spacing and diameter. However, if there are no stirrups at the ends of the columns so often that the wrapped concrete model cannot be applied, the wrapped concrete model assumption should not be applied. In this case, the stirrup tightening option should not be activated. Collapse in columns where the behavior of wrapped concrete is not observed is also an expected situation. For this reason, it is useful to check the spacing and diameters of stirrups. In addition, you can remove the vertical earthquake effect and the secondary earthquake direction from the performance analysis options. In addition to these, some elements are defined as singular basis, some elements are not defined. For this reason, a superstructure-free solution is required. In addition, in the reinforcement curtains with beams on them, the upper level arrangement on the curtains should also be made. Curtains should be arranged in such a way that the upper level is the lower level of the beam. Best regards...
Good day, thank you for your reply. Since the reinforcements used in place are fi 12, I selected and locked them before the analysis. I did not select this option because there is no stirrup tightening. I tried so many times that I couldn't deal with jeans after a while. However, even if I follow what you suggest, it doesn't recover from the crash.