| Popis: |
As you know, suspension bridges are much lighter in their total weight than bridges of other structures. This is their undoubted positive quality. It is no accident that this type of bridge is widely used in practice. However, along with the undeniable advantages, this type of bridge is quite sensitive to wind loads, which are a generator of bending and torsional vibrations of spans at certain speeds of transverse air flow. If the drag of the bridge with a transverse air flow can be easily reduced by designing streamlined surfaces, then ensuring the stability of the bridge span surface for bending and torsion can only be ensured by properly selecting the profile of its cross-section, which provides the necessary moment of inertia, as necessary components of its rigidity. |
