腐蚀损伤平行钢丝吊索应力分布特征

In order to investigated the stress distribution of steel wire suspender after corrosion damage, an improved theoretical calculation model of parallel wire suspender fiber bundle is proposed. The model adopted ANSYS spring element and joint coupling to simulate the interaction between steel wires. The influence of contact force of sheath on steel wires was considered when temperature changes. On this basis, the influence of parameters such as wire bundle length, number of layers, size number and location distribution of corrosion pits and the contact force of sheath on the stress distribution of steel wire in the suspender were investigated. The results show that the improved fiber bundle model can accurately reflect the stress distribution between the steel wires in bridge suspender. The stress of the central and inner layers is slightly larger than that of the outer layers under tensile load. Corrosion pit parameters have significant effect on the stress distribution of suspender wires. The force of suspender is the most unfavorable when the corrosion pit angle is 60 . The contact force of sheath has a significant effect on the stress of the outermost wire.