Fatigue Reliability Analysis of Cable Considering Corrosion

According to the principle and the basic concept of vortex-induced vibration, this paper deduces the vortex-induced vibration of cable vibration partial differential equation, the floating tunnel body section is simplified to the influence of parametric excitation generation into the equation. Then consider the tunnel - cable coupling model more realistic response are obtained. By changing the parameters, to simulate the incentives. When the parametric excitation frequency twice of the cable's inherent frequency, vibration modal response of the cable is the largest. According to the linear cumulative and Miner S - N curve method to calculate the cable's fatigue, consider the factor of corrosion, estimate the cable's life.