Safety Evaluation of Hydraulic Steel Gate Based on TOPSIS Model

Abstract

The paper aims to evaluate the safety of spillway’s steel gates in Xiaoling Reservoir. The weight of each evaluation index was obtained by analytic hierarchy process. Based on the detected data, TOPSIS model was used to evaluate the safety of main components for each gate. And then the comprehensive safety evaluation for spillway’s gates was carried out on this basis. The results were as follows. The coating of supporting arm was thin for gate 1. The coating of main beam and supporting arm was thin for gate 2. The coating of supporting arm was thin and the corrosion was serious for gate 3. The order of the three gates safety was gate 2 > gate 1 > gate 3. The results can reveal the safety situation of the gates and provide a reference for engineering maintenance.