Research on Comprehensive Evaluation Method for Long-Span Steel Structure Monitoring Based on AHP

In view of the problem of comprehensive evaluation for the safety state of long-span space steel structures, a three-level comprehensive evaluation index system for monitoring long-span steel structures was established, in which the criterion layer included the bearing capacity, deformation, dynamic characteristics, and load environment. By constructing the fuzzy judgment matrix of criterion layer and index layer, the weights of the monitoring indexes were obtained, and the representative values of the comprehensive evaluation for structural safety and its calculation method were put forward. The comprehensive index system proposed in the paper was used to evaluate the static load test of single-layer reticulated shell and the steel structure roof of Hangzhou West Railway Station during construction. These two engineering examples verified the correctness and effectiveness of the method proposed in the paper and provided a reference for the comprehensive evaluation of similar structural monitoring.