Bridge Pier Scour Research
| 项目名称： | Bridge Pier Scour Research |
| 摘要： | The bridge pier scour research evaluation report (NCHRP 24-27 (1)) is currently being finalized. The report examines the present state of knowledge regarding bridge-pier scour, evaluates the reliability of leading current methods to provide accurate estimates of design scour depth, and recommends a structured approach to scour-depth estimation for design use. The large variation in factors potentially influencing scour at bridge sites requires an approach sufficiently comprehensive to account for the more important individual parameter influences to be considered, yet that also treats pier scour from a systems-analysis perspective when the number of parameters is too numerous, or the parameters are insufficiently independent, to be described practically in terms of a series of individual parameter influences. The objectives of this research address several research issues whose resolution should enhance the reliability of scour depth estimation. The research issues fall into several categories: (1) Fundamental processes inadequately understood. The issues primarily concern flow field capacity to erode the channel boundary, and the boundary¿s capacity to resist erosion; (2) Complicating processes inadequately understood. The issues concern flow field capacity to erode the channel boundary, and the boundary's resistance to erosion; (3) Development of reliable design methods. Testing of standard or common abutment forms subject to complicating design considerations; (4) Development of smart instrumentation and observation procedures for monitoring boundary and flow conditions at bridge waterways. The Turner-Fairbank Highway Research Center (TFHRC) Hydraulics Laboratory will collaborate on this proposed research and will provide Lab capabilities and technical assistance. The Turner-Fairbank Highway Research Center. TFHRC Hydraulics Laboratory is planning to utilize a high speed recirculation flume for the tests identified. This will allow live bed scour experiments for flow velocities up to 5 times the critical velocity for a specific selected sediment size and to study the live bed peak carefully. |
| 状态： | Completed |
| 资金： | 190000 |
| 资助组织： | Colorado Department of Transportation<==>California Department of Transportation<==>Mississippi Department of Transportation<==>New York State Department of Transportation<==>Florida Department of Transportation |
| 项目负责人： | Kerenyi, Kornel |
| 开始时间： | 20120718 |
| 实际结束时间： | 20130317 |
| 主题领域： | Bridges and other structures；Design；Environment；Highways |
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