ABSTRACT
A new bridge system using both self-anchored and earth-anchored stays was developed to allow construction of a clear span of 3,000m with available materials today. The principles of the bi-stayed concept are presented and further applied to a bridge with a clear span of 1,200m. Aeroelastic problems are discussed in this example, together with a comparison between the structural response of the bi-stayed bridge and a conventional suspension bridge under live loads.
The bi-stayed concept may be used for clear spans heretofore reserved for suspension bridges, while retaining the inherent qualities of cable-stayed structures.
