PRESTRESSED STAY CABLE FOR CABLE-STAYED BRIDGES

摘要

at least one vertical bridge tower is used (14) supported by a stack (15) together with a top beam (11) carrying traffic, said apron being supported by a beam (16) cables. Several stays (12) are anchored to the upper end of the tower and extend at an angle relative to the deck and through the latter, and are anchored to the cable boom. Each strut is prestressed and includes a group of inner cable greased strands (25) contained in a tube (26) inner rigid structural, and a group of external cable strands (27) in a tube (37) rigid outer structural . Said outer rigid structural tube surrounding the group of external cables and is separated by a grout (28). Each group of cables comprises anchors (41, 42) to its upper and lower ends. One proceeds to the prestressing between the ends, at a desired voltage.