Patent ID: 8627530

Claim:
A method for constructing a cable-stayed bridge with a plurality of tensionless stay cables, the method comprising the steps of: constructing a plurality of main towers; constructing a plurality of anchor piers, each of the plurality of anchor piers being located outside an area between the plurality of main towers; installing a suspension cable over a main span between a pair of the plurality of main towers and over a plurality of side spans, each of the side spans being between a first of the main towers and one of the anchor piers installing a plurality of hangers to hang from the suspension cable, the hangers having a gap therebetween; connecting an anchorage cable to a lower end of each of the hangers, and arranging the anchorage cable longitudinally by anchoring the anchorage cable to an upper end of each of the anchor piers and sections of the main towers, the anchorage cable extending over the main span and the side spans in a longitudinal direction; sequentially installing stay cables a stay cable installation section by connecting each of the stay cables between an upper end of one of the main towers and the anchorage cable, the stay cables supporting a girder; constructing the girder by pre-manufacturing girder segments constituting the girder, transferring the girder segments, installing the girder segments by sequentially connecting the girder segments to at least one of the stay cables, and connecting the girder segments to one another longitudinally; and removing the suspension cable, the hangers, and the anchorage cable.