Multi-disease-index shield tunnel single-ring service performance evaluation method

The invention provides a shield tunnel single-ring service performance evaluation method based on multiple disease indexes. The method comprises the specific steps that (1) an evaluation index system of the service bearing performance and the use performance of a shield tunnel is established; (2) determining an evaluation standard and a corresponding parameter of each index in the evaluation index system; (3) determining the weight coefficient of each evaluation index in the aspects of bearing performance and use performance; (4) determining weight coefficients of the bearing performance and the use performance according to the influence of the diseases on the bearing performance and the use performance; and (5) comprehensively evaluating the service performance of the shield tunnel to obtain a multi-disease technical condition value of the shield tunnel. According to the method, the influence of multiple diseases on the bearing performance and the use performance is considered, so that the evaluation result