�@ Œf�ÚŽGŽ��i˜a�j�F “ú–{’n�k�HŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶�W Vol�F 9-2Šª ”N�F 1994”N •Å�F 1711-1716•Å ’˜ŽÒ�i˜a�j�F - ƒ^ƒCƒgƒ‹�i˜a�j�F - �´˜^�i˜a�j�F
- ƒL�[ƒ��[ƒh�i˜a�j�F - Œf�ÚŽGŽ��i‰p�j�F PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒ�i‰p�j�F Hongying YUAN, Kiyoshi HIRAO, Tsutomu SAWADA, Yoshifumi NARIYUKI ƒ^ƒCƒgƒ‹�i‰p�j�F MODAL ANALYSIS INSPECTION OF DAMAGE DETECTION FOR STRUCTURES WITH NONPROPORTIONALLY DAMPING �´˜^�i‰p�j�F
A modal analysis method is presented to estimate both the location and the severity of damage for nonproportionally damped structures by using lower measured modes. In order to demonstrate the availability of the method,a five-story shear building subjected to El Centro earthquake has been analyzed and the damage of the structure is evaluated. Moreover, the effects of measurement errors of modes on identification accuracy have been examined. ƒL�[ƒ��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F - ‹æ•ª �@�@�@ˆÏˆõ‰ï˜_•¶�W