A Case Study on Bridge-Scour Risk Assessment

Yanmaz, Ali Melih
Selamoğlu, Meriç
Many bridges fail or subject to considerable stability problems because of excessive scouring at infrastructural elements, such as piers and abutments. Computation of maximum possible depth of scour at these elements would lead to safe and economical design of footings. Scour depth computation is also of importance for existing bridges to assess their vulnerability against this phenomenon throughout their remaining life spans. A software, named as HYRISK, developed by the United States Federal Highway Administration (FHWA) can be utilized to assess the existing risk with reference to scouring action. HYRISK is a risk-based model, which computes the risk of failure of a bridge. It may also be applied to sequential bridges located on a river concerned. Therefore, it may eventually be possible to rank the series of existing bridges according to degree of potential risk imposed on the structures and the close environment. It can also provide a mean to compare possible bridge scour countermeasures that may be compatible to the local site characteristics of the bridge under consideration. A risk-based case study is carried out for a bridge located in Vakfıkebir, a town of Trabzon, Turkey, to illustrate the application of HYRISK model.
Citation Formats
A. M. Yanmaz and M. Selamoğlu, “A Case Study on Bridge-Scour Risk Assessment,” 2010, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/88440.