Design and Testing of MASH TL-3 Compliant Anchored F-Shape Portable Concrete Barrier System with Vertical Anchors (Supplemental) (TTI-616811, T4541-EN)
In this project, the researchers designed and tested a new portable concrete barrier (PCB) that can be anchored to restrict lateral deflection of the barrier on vehicle impact. The new barrier system can be anchored on asphalt pavement using vertical anchoring pins. It can also be anchored on concrete pavement or deck using vertical epoxy anchors. The barrier system can be installed as a roadside barrier and a median barrier. This report presents the design and development of the anchored PCB system using finite element simulation analysis as well as full-scale crash testing. Test tests were performed in accordance with the safety-performance evaluation guidelines included in the second edition of the American Association of State Highway and Transportation Officials (AASHTO) Manual for assessing Safety Hardware (MASH) (1). Various anchored configuration of the PCB system were tested in accordance with MASH Test 3-11, which involves a 2270P vehicle weighing 5000lb impacting the barrier at 25 degrees while traveling at 62 mi/h. Four crash tests were performed for the following anchored configurations of the PCB system: 1) PCB anchored on asphalt as a roadside barrier, 2) PCB anchored on concrete pavement as a roadside barrier, 3) PCB anchored on asphalt as a median barrier, and 4) PCB anchored on concrete pavement with shallow embedment epoxy anchors. This report provides details on the anchored PCB systems, the crash tests and results, and the performance assessment of the anchored PCB systems in accordance with MASH TEST 3-11 evaluation criteria for longitudinal barriers. All four anchored configurations of the new PCB system met the performance criteria for MASH TEST 3-11.
