Development of MASH Computer Simulated Steel Bridge Rail and Transition Details
| 项目名称： | Development of MASH Computer Simulated Steel Bridge Rail and Transition Details |
| 摘要： | AASHTO and FHWA have entered a joint implementation agreement to adopt the AASHTO Manual for Assessing Safety Hardware (MASH) criteria for use of roadside safety devices. Per the agreement on December 31, 2019 the DOT�s will specify bridge rail that meets MASH on the National Highway System. Some, if not all, of the New England state DOT�s are specifying steel bridge rail that was tested and evaluated by the New England Transportation Consortium under the current NCHRP 350 protocol. This non-proprietary �New England steel bridge rail� includes details for 2-bar, 3-bar, 4-bar and transitions to guardrail. Steel bridge rail is often used as an alternative to concrete barrier type rail depending on the location and site specific requirements of the bridge. Although there are some NCHRP and pooled fund initiatives to evaluate bridge rail under the MASH criteria it is unknown if these initiatives will include this particular rail. The NCHRP 20-07/Task 395 has concluded it does not meet MASH criteria, based on an initial review of the NETC rail details. This is no surprise and it is logical to conclude that at a minimum some detail adjustments with computer simulations are needed. With the deadline for bridge rail MASH only two years away, the New England state DOT�s need their steel bridge rail and transitions evaluated. The objective of this project is to develop details for MASH compliance using computer simulations of the New England steel bridge rail configurations including transitions. |
| 状态： | Active |
| 资助组织： | New England Transportation Consortium |
| 管理组织： | Maine Department of Transportation |
| 项目负责人： | Peabody, Dale |
| 开始时间： | 20180903 |
| 预计完成日期： | 20200601 |
| 实际结束时间： | 20200529 |
相关文献
- In-Service Performance Evaluation of NETC Steel Bridge Railings
- Two-tube Metal Rail Compliance Testing
- Pooled Fund for the Design, Development and Testing of a Box Beam Approach Guardrail Transition and an MGS Approach Guardrail Transition to a MASH TL-4 Three Steel Tube Bridge Rail
- Pooled Fund for the Design, Development and Testing of a Box Beam Approach Guardrail Transition and an MGS Approach Guardrail Transition to a MASH TL-4 Three Steel Tube Bridge Rail
- Pooled Fund for the Design, Development and Testing of a Box Beam Approach Guardrail Transition and an MGS Approach Guardrail Transition to a MASH TL-4 Three Steel Tube Bridge Rail
- Development of Prefabricated Bridge Railings
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