Over-height vehicle impact with bridge girders having different boundary conditions
| 项目名称： | Over-height vehicle impact with bridge girders having different boundary conditions |
| 摘要： | The majority of bridges in the US were constructed using prestressed concrete systems. Collisions between over-height trucks and bridges are common accidents. Based on an unpublished survey carried out by the PI, approximately one such accident occurs weekly across the U. S. Limited research, however, carried out to investigate the performance of bridge girders subjected to impact loads. This proposal aims to investigate the performance of prestressed bridge girders subjected to vehicle collision. The research will complement an ongoing pooled-funded project carried out by the PI to investigate the same issue. This MATC-funded project focuses on the effect of the concrete deck on impact testing of prestressed girders. In particular, three prestress girders having different torsional constraints will be investigated. All girders will be laterally constrained at both ends. Furthermore, the first girder will not be constrained against any torsional rotation. The torsional rotation of the second girder will be constrained at both ends. The third specimen will consist of multiple prestressed girders connected using a rigid reinforced concrete deck. The three specimens will be subjected to impact loads that cause different levels of damage. The impact load will be imposed using a cart that slides on a rail. The tests will determine the effects of the torsional constraints on the damage level and impact forces. |
| 状态： | Active |
| 资金： | 135894 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Mid-America Transportation Center |
| 项目负责人： | Stearns, Amy |
| 执行机构： | Missouri University of Science & Technology, Rolla |
| 主要研究人员： | ElGawady, Mohamed |
| 开始时间： | 20220201 |
| 预计完成日期： | 20230630 |
| 主题领域： | Bridges and other structures；Highways；Materials；Safety and Human Factors；Vehicles and Equipment |
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