e-mosty June 2017: Osman Gazi B. US Suspension. Hålogaland B. e-mosty June 2017: Suspension Bridges | Page 12

2.3 Cable Structures
The cable structures comprise the main cables, the
hangers, the tower saddles, splay saddles and the
cable strand arrangement, and fixation in the
anchorage chambers.
less appropriate for the transversely inclined cable
plane analysis and calculations.
Bespoke structural details were developed to suit the
design such as positioning of tower saddles based on
the spatial main cable geometry, main cable
alignment across splay saddles, and special cable
anchorage systems.
The spatial system set some extra challenges to the
design of cable structures. The traditional
longitudinal-horizontal-vertical reference system was
Figure 9: Top view of cable system with main cables and hangers. Main cable separation at mid span = 15.658m;
at tower top = 3.000m and at northern anchor chambers = 18.500m
2.4 Main Cable
The main cable in the main span has a diameter of
475mm. In order to resolve the horizontal forces,
there are extra cables in both southern and northern
spans due to the steeper angle, and they are
anchored into the tower saddle. The back stays are
also relatively steep because the OFOT railway line is
crossing close to the bridge axis on the Karistranda
side.
In order to secure a simple construction of the lower
anchorages in the deck, the distance between the
lower anchorage points and the centre of the bridge is
kept equidistant. Thereby the plane created is
deviating slightly from the perfect p