Field Testing and Load Rating of a Short-Span Thermoplastic Bridge System, Bridge T-8519
Abstract
Live-load tests were conducted on Bridge T-8519, located on Tuckers Road in Camp Mackall near Fort Bragg, North Carolina. This bridge was tested in conjunction with a similar nearby bridge (T-8518). Both bridges were constructed of a new structural material consisting primarily of recycled plastic lumber (RPL). The primary goal of the live-load testing was to determine load capacity ratings for civilian and military vehicles and, specifically, to determine whether the RPL structures could safely carry an M1 tank. A finite element model of the entire superstructure was developed and used to simulate the responses of the RPL bridge. The resulting model was very accurate; however, responses were very sensitive to small variations in load position due to the flexibility of the plank deck and the spacing of the support beams. Following the addition of deck fasteners, the bridge performance was much more consistent for the M1 tank responses, and more accurate modeling was obtained. Therefore, all ratings were based on the model developed from the second set of load test results. ,
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2010
- Accession Number
- ADA532411
Entities
People
- Brett Commander
- Henry Diaz-alvarez
Organizations
- Engineer Research and Development Center