New lifting program streamlines construction of massive suspension bridges.
The study focused on how to lift steel box girders for a three-span continuous suspension bridge. This type of bridge has slings in the side spans and stiffening girders without slings in the main tower region. The researchers compared two lifting sequences to find the best method for coordinating the deformation between main cables and stiffening girders. The goal was to determine the most effective lifting program for this complex type of bridge construction.