The location of the floor of the supports on independent foundations also negatively affected the work of the divorce span. Due to asymmetric deformations and strokes of the racks in the plan, the initial geometry of the divorce span was lost, the wings were deployed in plan by an angle of about 0.5 °. Moreover, the reversal of each floor of the support was independent, as a result of which the reinforcement nodes of the axes of rotation turned out to be deployed to their corner on each floor. Therefore, there was a violation of the geometric axis of rotation: instead of the straight axis, a broken line was obtained, which led to the appearance of the effect of “breaking” the axis of rotation during the wraps of the bridge from the couplings, which are fixed to the main beams and additional efforts on the nodes of the bearing of the rotation axis of the rotation axis. Long -term operation of the divorce flight of the bridge to them. Alexander Nevsky made it possible to identify a number of negative features and constructive defects of the divorce span, which were required to be eliminated in the process of major repairs. In particular, fluctuations in the counterweights during the passage of vehicles, which significantly reduced the endurance of the assemblies of the counterweight beams to the transverse beams of the wings; instability of the position of the wings on the axes of rotation (a change in the position of the wings relative to the longitudinal axis of the bridge after a series of wiring cycles); extreme complexity and inconvenience of execution of operations to adjust the gaps in negative support parts of the wings; the practical impossibility of changing the high -rise position of the swinging racks in order to regulate support reactions. The carrying capacity of the main metal structures of the divorce span was also insufficient, since the bridge was designed according to the norms of 1957. for temporary load Hi8. As a carriageway, a steel ribbed flooring was used, based on transverse beams with a step of 3 m, and in the tail of the wings – a reinforced concrete slab based on the main and transverse beams.
