Structural damage identification method based on deletion model

• Main Authors: GUO JIAN, WANG QIMING, ZHENG JINHAI, CHE YUFEI, WANG NING, LUO MENGYAN, ZHU RUIHU, WANG JUNLEI, ZENG HAIKUN
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a structural damage identification method based on a deletion model. The method comprises the following steps: obtaining a curvature modal difference between a current state and an intact state of a structure; establishing a curvature modal difference regression model, and performing matrix processing on the regression model; performing parameter estimation on the matrix regression model; deleting the curvature modal difference of a certain observation point, rebuilding a regression model and performing matrix processing on the regression model, and carrying out parameter estimation; analyzing the difference of regression coefficients of the observation point before and after deletion by using WK statistics, and judging whether the point of the structure is damagedor not; sequentially deleting the observation points and judging whether all the observation points of the structure are damaged or not. The technical problem that damage position judgment is not clear due to noise and measur