| dc.description.abstract | Non-ballast track has been developed for more than two decades to date. Its
design, research and development are proceeding as different requirements of each
country. In our country, non-ballastic track has just begun to be applied in recent
years. The fact that the domestic developments model is different from the most other
countries in terms of procurement models, technical capabilities and site features,
makes more complicated in the selection of the domestic non-ballast tracks. Therefore,
a decision model has to be built up based on the relative decision theory.
There are two parts in t his study. In t he first part, 5 levels and 16 evaluation
criteria are constructed after both of the literature reviews and the expert
interviews. Then by implementing the AHP weighting analysis of the criteria and the
method of value engineering to improve and modify the functions of the non-ballastic
track prototype, 4 different proposals are provided for the following experts
evaluation. The second part is to evaluate and compare these 4 proposals according
to the decision variables and the weighting indices that developed by a series of
questionnaires and expert interviews in the first part.
The empirical analysis of this study, together with the questionnaires and
interviews result in:
1. The decision-making of the evaluation of non-ballast track should include at least
5 aspects: railway policy, safety, comfortable, constructability and economic.
Each part should have to take account of the 16 evaluation criteria such as
requirements, technical know-how and other problems.
2. According to the evaluation results derived from the established decision model
in this study, the relative rankings of proposals are Proposal 3, Proposal
2,Proposal 4 and Proposal 1.
3. The decision model that developed in this study is proved to be feasible by the
study of practical cases. As a result, it can be utilized in the evaluation of
the non-ballast track works in the future. | en_US |