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Testing of State Roadside Safety Systems. Volume 3. Appendix B. Crash Testing and Evaluation of a Guardrail System for Low-Fill Culvert; Final rept. Nov 89-Aug 96
| 题名： | Testing of State Roadside Safety Systems. Volume 3. Appendix B. Crash Testing and Evaluation of a Guardrail System for Low-Fill Culvert; Final rept. Nov 89-Aug 96 |
| 作者： | Mak, K. K.; Bligh, R. P.; Menges, W. L. |
| 关键词： | Traffic safety; Crash tests; Guardrails; Culverts; Highway bridgs; Ditches; Evaluation; Roadside hazards; Impact tests; Median barriers; Performance; Design |
| 摘要： | The purpose of this study is to crash test and evaluate new or modified roadside safety hardware and where necessary, redesign the devices to improve their impact performance. The three major areas addressed in this study are the impact performance of bridge railings, transitions from guardrails to bridge railings, and end treatments for guardrails and median barriers. This report presents the results of three crash tests conducted on long-span nested W-beam guardrail designs for use over culverts. The first test (test no. 471470-2) was on a 3.81-m (12-ft, 6-in) span design. The second test (test no. 471470-4) was on a 5.72-m (18-ft, 9-in) span with a W-beam rail section on the rear of the guardrail. The third test (test no. 471470-5) was also on a 5.72-m (18-ft, 9-in) span, but without a W-beam rail section on the rear of the guardrail. All three crash tests corresponded to National Cooperative Highway Research Program (NCHRP) Report 230 test designation 10, involving a 2043-kg (4500-lb) passenger car impacting the guardrail at a nominal impact speed and angle of 96.5 km/h (60 mi/h) and 25 degrees. All three nested W-beam guardrail designs performed satisfactorily in the creash tests and met all evaluation criteria set forth in NCHRP Report 230. |
| 总页数： | 84p |
| 报告类型： | 科技报告 |
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