Examination of bracing system

The supporting structure of the tower block and the podium were tested separately in two separate models. For the analysis of the tower building, several calculation models were prepared, in which the structural elements (walls, slabs, columns) were given different stiffness settings, depending on whether the goal was to determine the building’s seismic behavior, wind dynamic behavior, or building movements necessary for facade design. The virtual rod function of AXIS VM was very helpful for the dimensioning of the stiffening core of the tower building, with which the stresses of the examined wall bodies can be precisely determined, thus helping to verify the ductility of the complex wall bodies. The complex wall bodies of the bracing cores were modeled using shell models, while the coupling beams ensuring their working together were modeled using bar elements. Taking into account the stiffness settings recommended by the international literature, the natural frequencies of the building were determined for the wind dynamic and wind comfort tests, as well as for the seismic dimensioning of the building. Taking advantage of the opportunity provided by AXISVM, the seismic loads were determined using a unique response spectrum curve according to the values of the local response spectrum curve. Another interesting thing is that due to the building’s frequency range, the relationship between the building’s seismic loads and the building’s movement is not linear. Thus, the displacement and stresses of the building caused by seismic loads were determined from two different spectrum curves. The former is flexible, while the latter is with the help of the design spectrum curve.