On the largest petrochemical construction site in Europe – Olefiny III on the premises of PKN Orlen, a newly erected column of about 80 m height had to be dismantled almost immediately. Design and execution somewhere in Asia. Artykuł jest tutaj.
I thought I would do a simulation showing how a column behaves in a wind of 25 m/s - 90 km/h. Of course, I did not know the exact construction of the column, but it is about the principle and showing that it is possible. The result of the total deformation during 10 seconds of the simulation is shown in the graph below. From this graph, it can be estimated that the column was swinging with an average frequency of about 0.6 Hz. There are two videos of the simulation under these links: https://drive.google.com/file/d/1s0cpuLbniuHyTJmWCWa3-US9Q0NSmDm7/view?usp=drive_link i https://drive.google.com/file/d/1Nn5imJvNfpjzF_n8ZQs2kZFnc1a50PeJ/view?usp=drive_link.
Here is the speed of the wind around the column.
The natural frequencies of the column for the first six deformation modes ranged from 0.5 Hz to 13 Hz.
