Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study on Bridges’ Global Flexibility Index for Ambient Vibration
The present study uses the Global Flexibility Index (GFI), which is the flexibility matrix’s norm. For cases of ambient vibration, in which excitations are unknown, the flexibility matrix is unavailable, and the GFI cannot make out. Using the ANSYS set up and fixes the modal of structure in the condition of Vibration model to a unit, and then put the modal in the condition of Vibration model to a quality. Get natural frequencies and mode shapes, make up flexibility matrix, and then calculate Global Flexibility Index. Measure the Index regularly. With the change of the Index, judge the damage degree of the bridge. A sharp increase in the index calls for further detailed investigation for appropriate actions, such as reinforcement or maintenance.
Study on Bridges’ Global Flexibility Index for Ambient Vibration
The present study uses the Global Flexibility Index (GFI), which is the flexibility matrix’s norm. For cases of ambient vibration, in which excitations are unknown, the flexibility matrix is unavailable, and the GFI cannot make out. Using the ANSYS set up and fixes the modal of structure in the condition of Vibration model to a unit, and then put the modal in the condition of Vibration model to a quality. Get natural frequencies and mode shapes, make up flexibility matrix, and then calculate Global Flexibility Index. Measure the Index regularly. With the change of the Index, judge the damage degree of the bridge. A sharp increase in the index calls for further detailed investigation for appropriate actions, such as reinforcement or maintenance.
Study on Bridges’ Global Flexibility Index for Ambient Vibration
Du, Qing (Autor:in) / Jiang, Hong-Yu (Autor:in) / Li, Xiao-Hui (Autor:in)
2012
4 Seiten
Aufsatz (Konferenz)
Englisch
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