Investigation and evaluation of deck , mast and cable pattern of Cable bridges

Cable bridges are one of the most advanced bridge construction systems. With the expansion of the pre-tensioning industry in bridges in the years after World War II, the construction of this type of bridge, which covered longer spans, flourished. The design and construction of this type of stairs. So that by choosing the correct shape of the cables, you can save a lot of costs in the construction of cable stairs. The arrangement of the cables, etc. was discussed.Examination of about 40 samples of cable steps and the following results were obtained:Most cable-stayed bridges are cable-stayed bridges and the fewest cable-stayed bridges are suspended. The most common type of deck used in bridges is about 67% aerodynamic and about 33% is built by trusses. The cables used were inverted y-type and the fewest masts used to build cable-stayed bridges were of the Virand Yel frame type. Were vertical and the least of them were diagonal cables.