With the rapid development of highway construction in China,many expressways with lower design standards and lack of maintenance have been unable to satisfy the demand of traffic volume,which may need to be reconstructed and widened.This paper describes the sensitivity analysis theory to find out the sensitive factors affecting the widening of expressway.Then from the aspects of the probability and severity of risk factors which could influence the traffic safety,single factor and multi factors sensitivity analysis are made,and based on the results of the analysis by using the fuzzy comprehensive evaluation method,the safety of highway widening is evaluated.Corresponding optimization measures are proposed in light of the degree of risk factors sensitivity which can provide guidance for optimization design of expressway widening.
expresswayreconstruction and wideningsafety evaluationsensitivity analysis
NETL
NSTL
维普
万方数据
