Why is there a sense of dislocation in the stairwell of high-rise buildings?

Because there needs to be an evacuation staircase.

Whether it is high-rise or multi-storey, there must be evacuation stairs, that is, fire evacuation stairs, with a clear width of not less than 0.9m according to regulations.

However, high-rise buildings generally require the stairwell to be closed, because the span of fire protection zone should not exceed six floors, so the evacuation stairwell should be separated to form a separate area. 672 The horizontal distance between the wall and the center line of the handrail or the center line of the handrail, that is, the width of the stair section, shall comply with the provisions of the fire protection code.