TTI Research Supervisor: Nauman Sheikh Research Engineer Texas A&M Transportation Institute Texas A&M University System TAMU 3135 College Station, Texas 77843-3135 (979) 317-2695 [email protected]
Pooled Fund Technical Representative: Derwood C. Sheppard, Jr., P.E., M.Eng. Standard Plans Publication Engineer FDOT Roadway Design Office Florida Department of Transportation 605 Suwannee Street Tallahassee, FL 32399-0450 (850) 414-4334 [email protected]
ABSTRACT
This research was performed to develop and crash test a design of fence system mounted on top of a single slope concrete bridge rail. The design was developed using extensive finite elemetn simulation analysis, followed by full-scle crash testing to verify the crashworthiness of the fence system mounted on top of a 36-inch tall permanenet single slope concrete bridge rail. The performance of the fence and barrier system was assessed in accordance with the safety-performance evaluation guidelines included in the second edition of the American Association on State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware (MASH) (1). The Crash test was performed in accordance with MASH Test 4-12 requirements for Test Level 4 (TL-4). This involves a 1000S single unit truck weighing 22,046 lb impacting the barrier system at an angle of 15 degrees while traveling at a speed of 56 mi/h.
This report provides details and results of the finite element analysis. It also provides the details of the fence and single slope bridge rail system, the crash tests and results, and the performance assessment of the fence and single slope bridge rail system for MASH Test 4-12 for longitudinal barriers.
The single slope bridge rail system with fence mounted on top met the performance criteria for MASH Test 4-12 for longitudinal barriers.
