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- Title
Evaluation for the Track Quality State Based on Combination Assigning Method and Grey Clustering.
- Authors
YANG Yi; XU Yikai; ZHAO Caiyou; WAN Zhuang; HU Chuan
- Abstract
Track quality status evaluation is of great significance to the safe operation and maintenance of trains. Therefore, this paper constructs a track quality status evaluation model based on the combination weighting method of game theory and grey clustering. The model first puts forward a comprehensive evaluation index system including track geometric state and structural state, then uses game theory to seek the optimal decision-making solution among analytic hierarchy process, entropy method and coefficient of variation method, and obtains the subjective and objective weights and combination weights of each index. On this basis, grey clustering is used to evaluate the track quality state according to the principle of maximum membership, Finally, the evaluation model is verified and studied by an example. The research results show that the excellent proportion of the evaluation results of the eight track units calculated by the model is 75%, which is basically consistent with the evaluation results of the Chengdu Metro inspection. However, the use of a weight method alone is greatly affected by the subjective and objective factors, which deviates from the actual results. Thus, the scientificity and rationality of the index system and method of the model are verified, and the direction of further research and optimization is given.
- Publication
Railway Standard Design, 2023, Vol 67, Issue 12, p68
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202204130008