Dynamic response of bridge system with knocking-off members
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Bibliographic Details
| Author(s): |
Masahide Matsumura
Masahiko Yoshida Nobuhito Ochi |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Published in: | IABSE Symposium Venice 2010 | ||||
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| Page(s): | 344-345 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796024781 | ||||
| Abstract: |
Displacement restrainer, restraints transverse movement of the superstructure of the isolated bridges, is adopted to protect expansion joints from damage during earthquake. Here to mitigate damage of bridge pier and/or its foundation and to enhance redundancy of the isolated viaducts in a strong earthquake, it can be considered that the displacement of the superstructure against a small and moderate earthquake is restraint and the displacement against a strong earthquake is freed to shift to isolated condition. Knock-off members will provide these responses of the vibration system. This study presents the outline of some of displacement restrainers having the knock-off function and reveals the effectiveness of the knock-off in the isolated bridge system through dynamic loading test using small-size shaking table. It is also analytically verified the influences of the breaking characteristics on seismic response of the system. |
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| Keywords: |
viaduct seismic response isolation knock-off member
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