| 英文摘要 |
Based on the measurement structural vibration, this study aimed to propose a data processing scheme and define a vulnerability index for the reasonable assessment of the damage state of structural foundation. A series of lateral loading tests on pier specimens were performed by NCREE for the study of the rocking response of a spread foundation. During these tests, the ambient vibration measurements were made on the fixed-base and flexible-base specimens in intact and damaged states, respectively, to investigate the influences of the base condition and the structural damage on the vibration response of the pier. In addition, the field vibration measurement was made at the Wensui Bridge of Provincial Highway No. 3. The modal analysis was also performed to examine the effect of pier foundation exposure due to scouring on the vibration behavior of the superstructures. Accordingly, the feasibility of the damage evaluation for structural foundation based on vibration measurement was verified. |
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