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From page 64... ... 64 C H A P T E R 3 Introduction Full-scale crash testing in accordance with MASH-2016 Test 3-10 specifications was performed on the bridge rail test installations. One installation consisted of a two-tube bridge rail with steel posts anchored directly to a simulated concrete deck. Read the entire page →
From page 65... ... Full-Scale Crash Testing 65 Figure 3.1. Bridge rail test installations. Read the entire page →
From page 66... ... 66 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance northwest of the flagship campus of Texas A&M University. The site, formerly a US Army Air Corps base, has large expanses of concrete runway and parking aprons well-suited for experimental research and testing of vehicle performance and handling, vehicle-roadway interaction, highway pavement durability and efficacy, and roadside safety hardware and perimeter protective device evaluation. Read the entire page →
From page 67... ... Full-Scale Crash Testing 67 steel cable was connected to the test vehicle, passed around a pulley near the impact point and through a pulley on the tow vehicle, and then anchored to the ground such that the tow vehicle moved away from the test site. This system had a 2:1 speed ratio between the test and tow vehicles. Read the entire page →
From page 68... ... 68 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Anthropomorphic Dummy Instrumentation An Alderson Research Laboratories Hybrid II, 50th percentile male anthropomorphic dummy, restrained with lap and shoulder belts, was placed in the front seat on the impact side of the 1100C vehicle. The dummy was not instrumented. Read the entire page →
From page 69... ... Full-Scale Crash Testing 69 Test Designation and Actual Impact Conditions MASH-2016 Test 3-10 involves an 1100C vehicle weighing 2,420 lb. Read the entire page →
From page 70... ... 70 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Figure 3.5. Bridge rail on deck before testing. Read the entire page →
From page 71... ... Full-Scale Crash Testing 71 Test Vehicle Figure 3.7 shows the 2015 Nissan Versa used for the crash test. The vehicle's test inertia weight was 2,431 lb., and its gross static weight was 2,596 lb. Read the entire page →
From page 72... ... 72 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Time (s) Events 0.0000 Vehicle impacts bridge rail 0.0388 Vehicle begins to redirect 0.0540 Left front tire contacts post 3 0.2250 Vehicle travels parallel to bridge rail 0.3625 Vehicle loses contact with bridge rail while traveling at 47.1 mph, vehicle trajectory of 3.1 degrees, and vehicle heading of 8.4 degrees Table 3.3. Read the entire page →
From page 73... ... Full-Scale Crash Testing 73 Figure 3.8. Bridge rail after test no. Read the entire page →
From page 74... ... 74 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Occupant Risk Factor Value Time OIV Longitudinal at 0.0818 s on left side of interior Lateral RDA Longitudinal 0.1535–0.1635 s Lateral 0.1533–0.1633 s Maximum 50 ms Moving Average Longitudinal −13.8 g 0.0323–0.0823 s Lateral 0.0260–0.0760 s Vertical 25.6 ft./s 31.5 ft./s 11.9 g 14.4 g 19.0 g −3.5 g 0.1145–0.1645 s Maximum Yaw, Pitch, and Roll Angles Roll 17° 0.5163 s Pitch 5° 0.7015 s Yaw 56° 1.1933 s Table 3.4. Occupant risk factors for test no. Read the entire page →
From page 75... ... General Information Test Agency ........................ Test Standard Test No. Read the entire page →
From page 76... ... 76 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Figure 3.12 presents the overall information on the bridge rail, and Figure 3.13 shows photographs of the installation. Appendix D gives further details on the bridge rail. Read the entire page →
From page 77... ... Figure 3.12. Details of bridge rail on curb. Read the entire page →
From page 78... ... 78 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Figure 3.14. Bridge rail/test vehicle geometrics for test no. Read the entire page →
From page 79... ... Full-Scale Crash Testing 79 Figure 3.15. Test vehicle before test no. Read the entire page →
From page 80... ... 80 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Figure 3.17. Test vehicle after test no. Read the entire page →
From page 81... ... Full-Scale Crash Testing 81 Figure 3.18. Interior of test vehicle after test no. Read the entire page →
From page 82... ... General Information Test Agency ........................ Test Standard Test No. Read the entire page →
From page 83... ... Full-Scale Crash Testing 83 Test Agency: Texas A&M Transportation Institute Test No.: 610571-03-2 Test Date: 2020-10-29 MASH-2016 Test 3-10 Evaluation Criteria Test Results Assessment Structural Adequacy A Test article should contain and redirect the vehicle or bring the vehicle to a controlled stop; the vehicle should not penetrate, underride, or override the installation although controlled lateral deflection of the test article is acceptable. Read the entire page →
From page 84... ... 84 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Test Agency: Texas A&M Transportation Institute Test No.: 610571-03-1 Test Date: 2020-11-09 MASH-2016 Test 3-10 Evaluation Criteria Test Results Assessment Structural Adequacy A Test article should contain and redirect the vehicle or bring the vehicle to a controlled stop; the vehicle should not penetrate, underride, or override the installation although controlled lateral deflection of the test article is acceptable. Read the entire page →

From page 64...

... 64 C H A P T E R 3 Introduction Full-scale crash testing in accordance with MASH-2016 Test 3-10 specifications was performed on the bridge rail test installations. One installation consisted of a two-tube bridge rail with steel posts anchored directly to a simulated concrete deck.