基于健康度的大跨斜拉桥评估体系研究

It is attempted to assess the long span cable-stayed bridge by using health degree index in this essay. Firstly, analytic hierarchy process with judgment method of the consistency of interval number matrix, combining with variable weights by balanced function and gray clustering method is used to improve the existing evaluation theory, so a new impairment evaluation model is established. A bridge suitability assessment method and the underlying index content are proposed, as well as a bridge economic evaluation model based on cost-benefit analysis of the remaining life. Then, a health degree evaluation system which comprehensively considered the upper index is established. Finally, an example of a Bridge is assessed to demonstrate the feasibility and effectiveness of the method.