Performance of Longitudinal Barriers on Curved, Superelevated Roadway Sections (2019) / Chapter Skim
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86 Full-Scale Testing and Results 6.1 Introduction Most longitudinal barriers used on U.S. highways have been tested to the generalized requirements under NCHRP Report 350 or MASH.
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87 Notes: * = Barrier performance extrapolated based on other simulation results.
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88 considered, it will be necessary to incur expenses to tear down the first road set up and build a second roadway set up)
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89 • Testing Required for Various Test Levels and Applicable Criteria from MASH (AASHTO 2009, Table 2-2)
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90 desired impact angle with the barrier. The longitudinal barrier was installed adjacent to the road section at the desired lateral locations and vertical orientation.
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Figure 6.2. Test set up plan for CSRS section constructed for testing at FOIL.
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92 as possible to the critical impact point. This was achieved by identifying the intersection point between the expected vehicle trajectory and the barrier line and using it to determine where the first impacted post needed to be installed.
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Figure 6.4. CSRS W-beam test article set up.
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95 • Test Article Design: Plan sheets showing the dimensions, connections, and configurations of the test article are provided. • Test Article Installation: Descriptions of the efforts to construct or install the test article are provided along with all relevant support documentation (e.g., compaction metrics)
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96 Figure 6.7. Suspension z-displacement from preliminary test.
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97 6.6 Full-Scale Crash Testing Results Three full-scale tests were conducted to reflect MASH Test 3-11 requirements simulated for a 254-m (833-ft) radius CSRS with a 6% superelevation for a G4(1S)
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98 0.00 s 0.16 s 0.31 s 0.47 s 0.63 s 0.79 s 0.94 s 1.10 s Figure 6.10. Sequential photographs for Test 16004 (rear isometric view)
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99 0.00 s 0.09 s 0.17 s 0.26 s 0.34 s 0.43 s 0.51 s 0.60 s Figure 6.11. Sequential photographs for Test 16004 (front isometric view)
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100 There was significant damage to the impacted area of the G4(1S) W-beam guardrail barrier.
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101 General Information Test Agency: FOIL Test Number: 16004 Test Date: 04/14/2016 Test Article: G41S W-Beam Guardrail Test Vehicle Description: 2270P Silverado Test Inertial Mass: 2,315 kg Gross Static Mass: 3,085 kg Impact Conditions Speed: 100.0 km/h Angle: 25.0° Occupant Risk Factors Impact Velocity (m/s) at 0.1701 s x-direction 4.9 y-direction 4.5 THIV (km/h)
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103 0.00 s 0.34 s 0.69 s 1.03 s 1.37 s 1.71 s 2.06 s 2.40 s Figure 6.15. Sequential photographs for Test 16010 (rear isometric view)
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104 0.00 s 0.16 s 0.31 s 0.47 s 0.63 s 0.79 s 0.94 s 1.10 s Figure 6.16. Sequential photographs for Test 16010 (front isometric view)
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106 General Information Test Agency: FOIL Test Number: 16010 Test Date: Times New Roman Test Article: G41S W-Beam Guardrail Test Vehicle Description: 2270P Silverado Test Inertial Mass: 3,085 kg Gross Static Mass: 2,283 kg Impact Conditions Speed: 100.0 km/h Angle: 25.0° Occupant Risk Factors Impact Velocity (m/s) at 0.2100 s x-direction 4.8 y-direction 3.8 THIV (km/h)
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108 0.00 s 0.16 s 0.31 s 0.47 s 0.63 s 0.79 s 0.94 s 1.10 s Figure 6.20. Sequential photographs for Test 16015 (rear isometric view)
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109 0.00 s 0.11 s 0.22 s 0.33 s 0.43 s 0.54 s 0.65 s 0.76 s Figure 6.21. Sequential photographs for Test 16015 (front isometric view)
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111 Test 16004 Test 16010 Test 16015 Structural Adequacy A: Test article should contain and redirect the vehicle; the vehicle should not penetrate, underride, or override the installation although controlled lateral deflection of the test article is acceptable. Pass Fail Pass Occupant Risk D: Detached elements, fragments, or other debris from the test article should not penetrate or show potential for penetrating the occupant compartment, or present an undue hazard to other traffic, pedestrians, or personnel in a work zone.
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