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Experimental Assessment of Dynamic Responses Induced in Concrete Bridges by Permit Vehicles |
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| Authors: | Piotr Szurgott Jerry Wekezer Leslaw Kwasniewski Jeffrey Siervogel Marc Ansley |
| Affiliation: | 1Assistant Professor, Faculty of Mechanical Engineering, Military Univ. of Technology, 2 Gen. Sylwestra Kaliskiego St., 00-908 Warsaw, Poland. E-mail: p.szurgott@wme.wat.edu.pl 2Professor, Dept. of Civil and Environmental Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer St., Tallahassee, FL 32310 (corresponding author). E-mail: wekezer@eng.fsu.edu 3Assistant Professor, Faculty of Civil Engineering, Warsaw Univ. of Technology, Al. Armii Ludowej 16, 00-637 Warsaw, Poland. E-mail: l.kwasniewski@il.pw.edu.pl 4MS Student, Dept. of Civil and Environmental Engineering, FAMU-FSU College of Engineering, 2525 Pottsdamer St., Tallahassee, FL 32310. E-mail: siervje@eng.fsu.edu 5Deceased; formerly, Structural Research Center, Florida Dept. of Transportation, 2007 E Dirac Dr., Tallahassee, FL 32310. E-mail: Marc.Ansley@dot.state.fl.us |
| Abstract: | Results from experimental testing of three permit vehicles are presented in the paper. The selected heavy vehicles, which require permits from state DOTs, included two tractor-trailer systems and a midsize crane. The vehicles were experimentally tested on popular existing speed bumps and on a representative highway bridge. The selected bridge was a reinforced-concrete structure constructed in 1999, located on the U.S. 90 in Northwest Florida. The bridge approach depression, combined with a distinct joint gap between the asphalt pavement and the concrete deck, triggered significant dynamic responses of the vehicle-bridge system. Similar dynamic vibrations were observed and recorded when the permit vehicles were driven over the speed bumps. Time histories of relative displacements, accelerations, and strains for selected locations on the vehicle-bridge system were recorded. The analysis of experimental data allowed for assessment of actual dynamic interactions between the vehicles and the speed bumps as well as dynamic load allowance factors for the selected bridge. |
| Keywords: | Dynamic tests Bridges concrete Vehicles Impact loads |
