Roadside Barrier Designs near Bridge Rail Ends with Restricted Rights-of-Way: A National Survey and Testing Reports (2022) / Chapter Skim
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217 Appendix H Test Report • FOIL Test 20008 • MASH Test 3-35 CRASH TEST EVALUATION OF A SHORT-RADIUS BARRIER FOR APPLICATION NEAR BRIDGE ENDS FOR THE MASH 3-35 TEST CONDITION Authors: Dhafer Marzougui, Christopher Story, Kenneth Opiela Fadi Tahan, and Cing-Dao (Steve) Kan Center for Collision Safety and Analysis George Mason University FOIL Test No.
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218 SUMMARY This appendix reports the result of a crash test described below: Report Title Crash Test Evaluation of a Short-Radius Barrier for Application Near Restricted Bridge Ends Test Type Full-Scale Crash Test: Vehicle Impacting Barrier What is Tested Short-Radius Guardrail System (SRGS) Purpose/Objective For situations where there are access constraints that limit the normal type of end treatments (such as bridge next to intersecting roadway)
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220 LIST OF FIGURES Figure 1. SRGS Test Installation diagram with main road side profile and details.
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222 evolved that provided the rigidity needed near the bridge rail that transferred the impacts to the perpendicular section of the barrier and shielded the area of concern. CSSA used simulations to test strategic stiffening and weakening options.
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223 spaced at 37 ½ in., and the remaining posts are spaced at 6 ft 3 in. All posts use 8 in.
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224 Figure 1. SRGS Test Installation diagram with main road side profile and details.
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225 Figure 2. SRGS Test Installation diagram showing side road features (horizontal portion)
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226 Table 1. SRGS Test Installation Components.
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227 Table 1. SRGS Test Installation Components (cont'd)
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228 Top and Bottom cables attached to the Thrie-beam using ½ of a standard anchor bracket (Back View) Top and Bottom cables attached to the Thrie-beam using ½ of a standard anchor bracket (Front View)
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229 2.2. Material Specifications This system was fabricated using standard RSH elements, as described above.
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230 Table 3. Test 3-35 evaluation requirements by category.
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231 450 ft in length (usually at 25 degree relative to the track) can be installed in the runout area at the end of the track.
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232 4.3. Test Vehicle Preparation MASH Test 3-35 involved a test with a 2270P vehicle weighing 5000 lb.
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233 Figure 6.
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234 Figure 7.
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235 Figure 8.
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237 parapet as the vehicle rebounded off the rail. The rail and the cable stayed connected and functional during impact.
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238 Figure 10.
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239 Figure 11.
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240 Figure 12.
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241 Figure 13.
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242 Figure 14.
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243 Figure 15.
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244 Figure 16.
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245 Figure 17.
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246 Figure 18.
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247 Table 6. Review of MASH results for Test 3-35, FOIL Test 20008.
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248 6.2 Recommendations Given the success of this critical test, researchers proceeded to prepare and execute the other required test of the system installed in front of a 2H:1V drop-off.
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249 Figure 19.
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