The new Fornello viaduct: method of seismically strengthening the piers and replacing the deck without interrupting traffic
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Bibliographic Details
| Author(s): |
Roberto Di Marco
Michele Mele |
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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): | 398-399 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796025159 | ||||
| Abstract: |
The old Fornello viaduct, on the Orte to Ravenna state highway in northern Italy, consisted of two parallel precast concrete bridges, one running in each direction; either bridge has a central span of approximately 115,0m and two lateral spans of 53,0m, and rests on two piers about 33m and 18m high. The high deformability of the deck determined discontinuities in the vertical alignments at mid-span due to permanent loads and vibration phenomena caused by live loads; this created serious traffic problems. Static strengthening was also required to meet new seismic requirements. This paper reports on the solutions adopted, focussing on the ways in which the new requirements of strength and serviceability were addressed, particularly with respect to durability and the relationships between the new structures and the setting, which is a landscape of special value. |
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| Keywords: |
seismic retrofitting creep shrinkage seismic actions steel-concrete structures slab cracking control
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