*4.3. Analysis of the Spherical Support with Steel-Reinforced Columns*

After concluding that the global structure is safe, the next step was to analyse an individual column support by using the finite element method. The results of the global analysis were used to determine the support reactions. At the most dangerous column support connection, the horizontal force was 95 kN and vertical force was 940 kN. The forces were taken as 120 kN in horizontal and 1000 kN in vertical directions.

The equivalent stress distribution obtained in this case is shown in Figure 14. As can be clearly seen from this figure, the stress levels are below the yield stress, even though extreme loads are applied. Figure 15 shows a post-damage image of one of the columns to which the space frame roof system was attached.

**Figure 14.** Equivalent stress distribution of the column support connection.

**Figure 15.** Damage on the support to which the space truss roof system was attached.

Figure 16 shows the distribution of the resultant displacement that occurs in the column support connection. Here, it can be seen that the maximum value of the displacement compounds of the spherical support was around 0.3 mm.

**Figure 16.** Resultant displacement distribution of the column support connection.
