Method for determining an optimal bridge maintenance technology combination under multiple diseases by using a genetic algorithm

Abstract

The invention belongs to the field of bridge maintenance, and particularly relates to a method for determining an optimal bridge maintenance technology combination under multiple diseases by using a genetic algorithm. According to the technical scheme, the method comprises the following steps that (1) determining maintenance technology list optimization indexes, wherein the maintenance technologylist optimization indexes comprise a cost index, a service life and an application index; (2) respectively carrying out data initial processing and normalization on the cost index, the adaptation index and the service life of the maintenance technology; (3) determining the weight value of each index by adopting a G1 method; (4) establishing a coefficient matrix of each index according to the normalized data; and (5) introducing a decision matrix, establishing a genetic algorithm multi-objective optimization model, and further determining an optimal maintenance technical list of the bridge under multiple diseases. The method for determining the optimal bridge maintenance technology combination under multiple diseases by using the genetic algorithm is wide in application range, simple in principle, convenient to use and good in reliability.

Description

technical field [0001] The invention belongs to the field of bridge maintenance, and in particular relates to a method for determining the optimal bridge maintenance technology combination under multiple diseases by using a genetic algorithm. Background technique [0002] With the development of the economy, China has built a large amount of infrastructure, and bridges, as the connection points of the transportation road network, have also been built in large numbers. By the end of 2017, China had built 832,500 road bridges with a total mileage of 52.2562 million meters. In the five years from 2013 to 2017, 97,200 new bridges were built in mainland China, and the newly added mileage reached 12.4782 million meters. At present, China is still focusing a lot of energy on building new bridges, but as time goes by, the number of new bridges will gradually decrease, and the number of bridges that need maintenance will gradually increase. Therefore, bridge maintenance plays an in...

AI Technical Summary

Problems solved by technology

However, due to the different deterioration of the disease, the service life and application of the maintenance technology are also different. The maintenance technology selected by the decision-maker only based on the maintenance cost may fail due to multiple applications of the maintenance technology with poor comprehensive performance in the long-term maintenance process. increase cost

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