Simulation of the Steel Structure in the Life Cycle of Highway Bridge
This paper proposes a method for life-cycle evaluation of bridge with steel-frame structure in highway,based on fuzzy rough set theory.Firstly,we collected index data of life-cycle evaluation and used the fuzzy rough set theory to carry out dimensionless process to initial evaluation index data,then worked out objective weights of evaluation index and named all attribute value in one evaluation module as a fuzzy set integrated with specialist scoring theory.Moreover,the research provided the evaluation module with degree of membership relative and obtained subjective weight of index.In addition,we acquired fuzzy approximation relation existing in two fuzzy sets integrated with comprehensive subjective and objective weight,and built state-transition matrix of evaluation index probability integrated with Markov chain theory to obtain vector of state stability.Finally,we obtained the development trend of construction of high-speed tunnel and value of comprehensive evaluation integrated with weights.Simulation results show that the method can improve evaluation precision.The stability of evaluation is optimal.
HighwayBridge with steel-frame structureFuzzy rough set theoryLife cycle
NETL
NSTL
万方数据
维普
