Evaluation of Surface Mounted Median Guardrail
| 项目名称： | Evaluation of Surface Mounted Median Guardrail |
| 摘要： | Concrete median barriers are very commonly used in areas that have high Average Daily Traffic (ADT) or where there is higher chance of vehicle intruding into opposing lanes due to curves or other geometric features. Concrete barriers are generally expensive to construct and a metal rail median guardrail has the potential to reduce this cost. In a lot of urban and high traffic volume roadways, a median with soil is not available. This limits the use of existing guardrail systems since they require metal posts that are embedded in soil. The research team’s approach aims to develop a metal rail median guardrail that can be mounted directly on concrete pavement. Such a design will allow TxDOT to protect opposing traffic in a lot of areas where it was previously cost prohibitive to do so with concrete median barriers. The research team will develop a concept of surface mounted guardrail that will meet the Manual for Assessing Safety Hardware (MASH) testing requirements for Test Level (TL) 3. The research team will mature this concept through a series of component level dynamic impact testing and finite element (FE) simulation. The research team will develop a full system model of the guardrail and perform vehicle impact simulations to determine the likelihood of the design to meet MASH testing requirements. As a final step, the research team will conduct MASH Test 3-11 and Test 3-10 with a pickup truck and a small passenger car, respectively, to verify the performance of the new surface mounted guardrail design. |
| 状态： | Active |
| 资金： | 336813 |
| 资助组织： | Texas Department of Transportation<==>Federal Highway Administration |
| 项目负责人： | Odell, Wade |
| 执行机构： | Texas A&M Transportation Institute, College Station |
| 开始时间： | 20200201 |
| 预计完成日期： | 20220131 |
| 主题领域： | Highways；Safety and Human Factors |
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