| Title |
Study on The Damage Location Detection of Shear Building Structures Using The Degradation Ratio of Story Stiffness |
| DOI |
https://doi.org/10.5659/JAIK_SC.2018.34.2.3 |
| Keywords |
damage detection ; mode shape ; natural frequency ; shear building |
| Abstract |
Damage location and extent of structure could be detected by the inverse analysis on dynamic response properties such as frequencies and mode shapes. In practice the measured difference of natural frequencies represent the stiffness change reliably, however the measured mode shape is insensitive for stiffness change, but provides spatial information of damage. The damage detection index on shear building structures is formulated in this study. The damage detection index could be estimated from mode shape and srory stiffness of undamaged structure and frequency difference between undamaged and damaged structure. For the verification of the observed damage detection method, the numerical analysis of Matlab and MIDAS and shacking table test were performed. In results, the damage index of damaged story was estimated so higher than undamaged stories that indicates the damaged story apparently. |