CAESAR EVALUATION OF SCOUR AND STREAM STABILITY

摘要

An expert system CAESAR was recently developed for the evaluation of scour and stream stability. The objective of this study is to assess the performance of CAESAR. Three scour indices are used along with the results of CAESAR. These indices are the Observed Streambed Scour Index, the INDOT Potential Streambed Scour Index, and the Simon Potential Streambed Scour Index. Ten bridges in Indiana are selected for evaluation. The scour indices and the field inspection information are retrieved from the USGS data base. According to the results of this study, CAESAR reflects current scour risks as well as the Observed Streambed Scour Index, but identifies more bridges as scour critical than the INDOT Potential Streambed Scour Index and the Simon Potential Streambed Scour Index.