Author(s)

Niannian Yu, Xiaohui Cao, Haijian He and Cunrong Li

Corresponding Author

Cunrong Li

ABSTRACT

With the rapid development of high-speed railways, the safety of railway infrastructure is becoming more and more important. Large-span space steel structures are widely used in railway station buildings and platform canopies due to their good performance. However, it’s not easy to know exactly how long it will last. In this paper the analytic hierarchy process is used to establish an index system that affects the health of the steel canopy of coastal high-speed railway stations, introducing the entropy method to improve the calculation method of key index weights and reduce the evaluation bias caused by subjective experience. Finally, a steel structure health evaluation model based on fuzzy hierarchy evaluation is established and its effectiveness is verified in a specific engineering case. From the verification results, the evaluation model could provide scientific basis for early-warning diagnosis and health assessment of steel structure projects and decisionmaking support for project supervision and maintenance and bring certain economic benefits.

KEYWORDS

Coastal railway, steel structures, entropy method, fuzzy hierarchy evaluation, health evaluation