Experimental investigation of the seismic response of repaired r.c. bridges by means of pseudodynamic tests
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Bibliographic Details
| Author(s): |
Davide Lavorato
Camillo Nuti Silvia Santini |
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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): | 448-449 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796025294 | ||||
| Abstract: |
Some techniques for repairing and retrofitting of specimens in scale 1:6 of the most stressed r.c. circular piers of a bridge designed according to Italian Code before 1986 severely damaged after previous pseudodynamic and cyclic tests, are described. The specimens have been repaired using epoxy adhesive, stainless steel rebars, self compacting concrete, strengthened with CFRP wrapping and again tested by pseudodynamic, under the seismic action used for first tests on undamaged specimen. In the pseudodynamic test, one repaired and retrofitted pier specimen is physically tested, while the rest of the bridge is numerically simulated using an in-house apparatus here described. Finally, the seismic behaviour of the retrofitted bridge piers has been compared to the seismic behaviour of the original piers and to the first numerical results of a detailed fiber model built in OpenSees. |
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| Keywords: |
bridge repair maintenance retrofitting SCC CFRP fiber model
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