Evaluation system of type test for the rubber bearing of bridges based on analytical hierarchy process

At present, quantitative criteria of some type test items of rubber bearings of bridges in the national standard, such as dependency of shear properties, are not given, which make it difficult to evaluate the result of type test comprehensively. Herein, the analytical hierarchy process (AHP) was adopted to evaluate type test of rubber bearing of bridges. Hierarchy evaluation model with object layer, standard layer and base index layer was established. Evaluation criteria of the base indexes were summarized. Scoring principle and graded scoring method of the indexes were put forward. Judgment matrices and index weight of the base index layer and the standards layer were determined. Then the whole comprehensive evaluation system of type test for the rubber bearing of bridges was completed. The type tests of the same type of lead plug rubber bearings produced by 5 manufacturers were evaluated by the proposed evaluation method. Results show that, the evaluation results of type test are consistent with the results of practical engineering evaluation. So the evaluation system is correct and rational.