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Principal investigators: Ian Buckle, Ahmad Itani, David Sanders
Project manager: Kelly Lyttle, P.E.
Graduate research assistants:
- w88 casino gamesM. An-Ani (Ph.D.)
- M. Levi (M.S.)
- E. Monzon (Ph.D.)
- A. Saad (Ph.D.)
- D. Smith (M.S.)
- C. Wei (Ph.D.)
- J. Weiser (Ph.D.)
- H. Wibowo (Ph.D.)
Sponsored By
- National Science Foundation - NEES Shared-Use Access
- Federal Highway Administration through contract DTFH61-07-C-00031
- California Department of Transportation through contract 59A0695
Project summary
A project is underway at the University of Nevada, Reno to investigate the seismic effects of multi-span curved bridges using a 2/5 scale model of a three-span bridge. The model is 145 ft long with an 80 ft radius at the centerline and it rests on four shake tables in the laboratory. The superstructure consists of three steel girders and a concrete deck that is 12 ft wide.
The testing of this model w88 live casinois part of a larger project investigating seismic resilience, funded by the Federal Highway Administration.
Six different configurations will be tested to examine different components, including column design (with and without conventional columns), abutment design (with and without backfill behind the abutments), seismic isolation (with and without response modification devices), and the effects of live load (with and without trucks on the superstructure).
This specimen was designed by a team of eight graduate students under the supervision of three professors in civil engineering.
| Test | Test Focus | Superstructure Type | Substructure Type | Fail Columns | Bearing Type | w88 live casinoAbutment Type |
|---|---|---|---|---|---|---|
| 1 | Conventional columns | Elastic crossframes | 24" Column (Set A) | Yes | Steel | No pounding |
| 2 | Live load | Elastic crossframes | 24" Column (Set B) | Yes | Steel | No pounding |
| 3 | Base isolation | Elastic crossframes | 24" Column (Set C) | Yes | Elastic isolators | No pounding |
| 4 | Hybrid isolation/ductile crossframes | Ductile crossframes | 24" Column (Set D) | No | Hybrid isolators | No pounding |
| 5 | Abutment pounding | Elastic crossframes | 24" Column (Set D) | Yes | Steel | Pounding |
| 6 | Rocking column | Elastic crossframes | Rocking Column | Yes | Steel | No pounding |
Currently, there are no design regulations on horizontally curved bridges and the data from this project will provide new insight on their behavior under seismic loading. The results of the research will be incorporated into future industry design codes. Ultimately, this will help structural engineers design curved bridges w88 casino games loginto withstand the effects of strong earthquakes.