توسعه شاخص كيفيت سازه‌اي خط براي خطوط مترو

With the increase in the volume of railway lines in metropolises and on the other hand, budget restrictions in the periods of operation, the effective management of assets is more important than ever. For this reason, in the field of maintenance management, the existence of a suitable algorithm and method for quality assessment of railway lines is of great importance. There are various methods and quality indicators in the world for this purpose. According to these indicators and different regulations, the quality of the lines can be classified and according to it, the necessary budgets are allocated and maintenance management is carried out. In this research, a structural quality index has been developed for use in the countryʹs metro lines. The methods of determining the quality of the line that are currently used in the country are often based on the geometric characteristics of the line. This is despite the fact that structural failures have a great effect on the repair and maintenance process. Using the visual inspection method and determining the structural quality index for the line can greatly reduce maintenance costs. On the other hand, the understanding of engineers to repair and replace railway equipment is based on structural failures. In general, the stages of index development in this research include the definition and classification of important structural failures in metro lines, presenting the eva‎luation method of failures and determining how to score the structural quality of the line and its components. Finally, in order to implement the developed index model, a part of Isfahan metro line 1 was selected as a case study, and after conducting field visits to collect damage data, the structural quality index values of the line and its components were calculated. Based on this, the priority of dealing with the line components was determined and the quality grade of the line was determined, which indicates the level of reliability of the line and its current ability to support the defined operation.

5