详情

Develop Countermeasure Strategies for Protecting Bridge Girders Against Overheight Vehicles Impact

项目名称：	Develop Countermeasure Strategies for Protecting Bridge Girders Against Overheight Vehicles Impact
摘要：	The Federal Highway Administration (FHWA) recently developed an energy-dissipative system prototype using a combination of a steel box beam with aluminum honeycombs for the protection of bridge girders from over-height impacts. This innovative protection device will be effective in preventing damages to concrete and steel beams, while sustaining moderate to severe damage to itself, depending on the intensity of the impact. This project focuses on the full scale testing, field installation and evaluation of the effectiveness of this prototype against over-height truck impacts. The innovative steel beam/honeycomb protective system is anticipated to dissipate a large portion of the energy from the colliding truck by crushing/deforming the honeycombs. The effectiveness of this device has been investigated recently by large-scale testing in collaboration with the researchers at Hunan University, where over-height impact was simulated through a drop hammer system. With the success of the large-scale testing program, the actual field installation of full scale model is deemed necessary to validate its effectiveness to protect existing bridge structures. In particular, this project aims at the following: (1) Design of the full-scale testing program and selection of bridge site for the field installation; (2) Custom construction and installation of the full-scale model of the prototype attaching to the existing facial girder of the selected structure; and (3) Full scale testing and evaluation of the system with actual over-height truck impact on site.
状态：	Programmed
资金：	1830010
资助组织：	Federal Highway Administration<==>Alaska Department of Transportation and Public Facilities<==>Louisiana Department of Transportation and Development<==>Virginia Department of Transportation<==>Oklahoma Transportation<==>New York State Department of Transportation<==>New Jersey Department of Transportation
项目负责人：	Chiarito, Vincent
开始时间：	20211012
主题领域：	Bridges and other structures；Design；Highways；Safety and Human Factors