原文传递
Analysis of a Flexible Bridge Rail System for High-Speed Roadways. Technical rept. (Sept. 2004 - Feb. 2008).
| 题名： | Analysis of a Flexible Bridge Rail System for High-Speed Roadways. Technical rept. (Sept. 2004 - Feb. 2008). |
| 作者： | Bligh-R.P.; Abu-Odeh-A.Y.; Williams-W.F.; Menges-W.L. |
| 关键词： | *Bridge-approaches; *Guardrail-impact-tets; *Traffic-safety.;High-speed; Roadways-; Accident-prevention; Finite-analysis; Simulation-; Modeling-; Crash-testing; Texas-. |
| 摘要： | The T6 tubular W-beam bridge rail has seen widespread use across the state of Texas. However, because it was unable to satisfy Test Level 3 (TL-3) impact performance requirements of NCHRP Report 350, it is no longer eligible for use on high-speed roadways. A new flexible bridge rail system, referred to herein as the T8 rail, has been designed for use on culverts and thin deck structures as a replacement for the T6 rail in high-speed applications. The T8 rail incorporates a tubular thrie beam rail element. Use of a tubular thrie beam provides additional rail height to improve stability for light truck vehicles, reduced clear opening to minimize the potential for vehicle underride, and a standard rail shape for ease of transitioning to approach guardrail. The anchor bolt pattern or footprint for the T8 post is the same as that used for the T6 post. This facilitates upgrade of existing T6 installations. Finite element impact simulations were conducted to evaluate the performance of the new tubular thrie beam bridge rail. The simulations indicated that the T8 rail should be capable of meeting TL-3 impact conditions of NCHRP Report 350. |
| 报告类型： | 科技报告 |
相关文献
- NCHRP Report 350 Test 3-11 on the Modified T8 Bridge Rail. Technical rept. (Sept. 2004 - Aug. 2008).
- Portable Concrete Traffic Barrier for Maintenance Operations. Technical rept. (Sept. 2003 - Aug. 2004).
- Travel Time Estimation Using Cell Phones (TTECP) for Highways and Roadways.
- Evaluation of Barriers for Very High Speed Roadways.
- Evaluation of Guardrail to Concrete Bridge Rail Transitions. Research rept. Sep 02-Aug 03.
- Development of Content for a Flexible Pavement Forensics Knowledge Management System.
检索历史
应用推荐
