Yi Sun-sin Bridge: Several Unique Features on the Cable Erection Procedure

摘要

Although four suspension bridges have already been built in Korea, constructing the Yi Sun-sinrnBridge is a great challenge not only because its main span length of 1545m is almost three timesrnas long as the previous longest suspension bridge in Korea, but also because it is the firstrnsuspension bridge for which Korean engineers solely carried out all of the construction tasks,rncreating their own equipment and devices for the cable erection process as well. In this paper,rnseveral unique features pertaining to the cable erection procedures are introduced instead of therndetails of ordinary cable erection procedures, which are not very different from those of otherrnlong-span suspension bridges. An improved spinning wheel, a wire supply method for thernspinning of extra- strands, and a band-hanger installation method are described.