FIRE-RESISTANT, ICING-RESISTANT AND DURABLE CABLE FOR CABLE-STAYED BRIDGE

摘要

The cable for a cable-stayed bridge having fire resistance and anti-icing durability of the present invention includes a cable body pulled between a bridge and a bridge tower, the outside of the cable body close to the bridge is covered with a heat insulating layer, and the outside of the heat insulating layer is covered with a fire resistant layer, The fire resistant layer is a metal sheath tube, and the heat insulating layer is a ceramic fiber fabric or a ceramic fiber fabric having a fire resistant coating layer on the outer surface. Here, the ceramic fiber fabric has a spatial network structure, a mineral filler is filled in the spatial network structure, and the mineral filler is cured in the pores of the spatial network structure through an adhesive. An electric heating tape is wrapped around the outside of the cable body close to the bridge tower, and the electric heating tape has a sandwich structure and includes an inner layer PVF fluorinated film, a printed resistance layer and an outer layer PVF fluorinated film, and the printed resistance layer generates heat when energized. Heat the cable body. According to the actual situation, it is possible to change the functional structure customized for each part of the cable, which is more practical.