Aerostatic stability analysis of suspension bridges under parametric uncertainty

摘要

The aerostatic stability analysis based on deterministic model gives only the mean critical wind velocity and misses the deviations present because of randomness in the structural parameters. For accurate critical wind velocity, it is necessary that the analysis technique incorporate the effect of structural parameters randomness. However, a simple, accurate, and efficient method for stochastic aerostatic stability analysis of suspension bridges has not been developed yet. This paper proposes a Monte Carlo simulation for stochastic aerostatic stability analysis of suspension bridges incorporating the series method. The unique feature of the proposed method is the combination of the advantages of direct Monte Carlo simulation and the series method. The stochastic aerostatic stability analysis of Hu Men Bridge over Zhujiang River in China is performed as an example. The results show that the proposed method is accurate, practical, and computationally efficient, and it provides a better understanding of the aerostatic stability of suspension bridges.