Evaluation of Design Methods to Determine Scour Depths for Bridge Structures, Technical Summary.

摘要

The overall goal of the project was to evaluate the applicability of the existing HEC-18 method to Louisiana bridges that are mostly situated on cohesive soils and develop a more reliable design method for scour depth prediction in the state of Louisiana, with the consideration of the states special meteorological and climatic characteristics and soil/sediment properties. In addition, the project also aimed to develop an innovative method to derive the real-time, accurate hydrologic and hydraulic properties required for scour analysis using the archived satellite remotely sensed data, so that the uncertainty in scour prediction associated with assumed virtual flood events can be minimized.