Abstract:

Abstract:When making a formal safety assessment of hydraulic steel gate, four indicators: structural strength,discharge capacity, water retaining capacity and service indicator are constructed as the assessment indicators system, and the weight of indicators is confirmed by experts using the analytic hierarchy process. Moreover, the grey relational analysis method is introduced to avoid the weight differences which are caused by subjective factors of experts and make the assessment more scientific and reasonable. For the uncertainty of formal safety assessment indicators of hydraulic steel gate, the set pair analysis is introduced, and a set pair analysis model for formal safety assessment of hydraulic steel gate is built by constructing a set pair of assessment indicators and assessment criteria. The calculation result of example verifies the effectiveness of set pair analysis forthe formal safety assessment of hydraulic steel gate.

Key words: Keywords:hydraulic steel gate;assessment indicator, analytic hierarchy process;grey relation analysis method;set pair analysis;formal safety assessment