Discussion of 'Field Measurements and Simulation of Bridge Scour Depth Variations during Floods' by J.-Y. Lu, J.-H.Hong, C.-C. Su, C.-Y. Wang, and J.-S. Lai

摘要

The discusser found the authors' paper to be an interesting contribution because of its significant focus on the acquisition of field data in support of both local and general scour measurements. Such data are invariably difficult to obtain, and to date little work has been done in this regard. In the context of local scour at a bridge pier, it is well recognized that measurements made after the fact are almost assuredly underestimates in the case of rivers that have experienced live-bed scour, which is likely the situation in the case of a sand bed river. Thus, the authors' work in using two approaches for ascertaining the maximum total depth of scour at a pier is of considerable interest and practical value.