Steel member analysis method considering corrosion pit evolution method

The invention discloses a steel member analysis method considering an erosion pit evolution method, and belongs to the technical field of steel members. The method is technically characterized by comprising the following steps: step 1, scanning by using a three-dimensional shape scanner to obtain the three-dimensional shape of the corroded surface of the same steel member at a plurality of corrosion times; step 2, giving out a relationship between the depth expectation of a corrosion pit and the time and a relationship between related standard deviation and the time; 4, determining the total number Q of the corrosion pits, and determining the total number Q of the corrosion pits, wherein the relation between the radius expectation bt and t of the corrosion pits and the relation between related standard deviation and time are given; and 5, establishing a numerical calculation model of the steel member, and further performing analysis. By the adoption of the method, the influence of corrosion at a certain momen