原文传递
Development of a 7.62-m Long Span Guardrail System
| 题名： | Development of a 7.62-m Long Span Guardrail System |
| 作者： | Polivka, K.A., Bielenberg, B.W., Sicking, D.L., Failer, R.K., and Rohde, J.R. |
| 关键词： | Highway Safety, Guardrail, Roadside Appurtenances, Longitudinal Barrier, Box Crash Test, Compliance Culvert Test |
| 摘要： | A 7.62-m long span guardrail system was developed for use over low-fill culverts. The long span Design was constructed with two 2.66-mm (12-gauge) thick nested W-beam rails totaling 30.48 m in length. The nested W-beam rail was supported by sixteen W150x13.5 steel posts and six standard CRT posts, each measuring 1,830-mm long. Post spacings were 1,905-mm on center except for the 7.62-m spacing between the two CRT posts surrounding the unsupported span. The research study included computer simulation modeling with BARRIER VII and full-scale vehicle crash testing, using 3/4-ton pickup trucks. The first test,impactingataspeed of 101.3 km/hr and an angle of 25.4 degrees, was unsuccessful because the barrier system failed at the simulated BCT anchorage end. Consequently, the long-span barrier system was modified to include additional guardrail posts and new BCT anchorage hardware. The second test, impacting at a speed of 102.7 km/hr and an angle of 24.5 degrees, was unsuccessful due to vehicle rollover. The safety performance of the long-span barrier system was determined to be unacceptable according to the Test Level 3 (TL-3) evaluation criteria specified in NCHRP Report No. 350. Recommended Procedures for the Safety Performance Evaluation of High Features. |
| 报告类型： | 科技报告 |
相关文献
- Development of a 7.62-m Long Span Guardrail System - Phase II
- LONG-SPAN GUARDRAIL SYSTEM FOR CULVERT APPLICATIONS.
- Increased Span Length for the MGS Long-Span Guardrail System
- MEASURED PERFORMANCE OF 4.4-METER DIAMETER MULTIPLATE KEYHOLE-SLOTTED CONDUIT UNDER 20-METER EARTHFILL.
- 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
- Midwest Guardrail System for Long-Span Culvert Applications.
检索历史
应用推荐
