Because of the problem local scour caused by change flow structure water-resistance column bridge pier, theoretical analysis, and indoor water tank test were used to study effect installing a new anti-scouring device in front pier on reduction effect; influence main design parameters such as height protective device, angle distance from was selected, optimal parameter combination selected. The ...

In order to solve the prediction and protection problems of local pier scour with a downstream sediment storage dam on non-uniform sand riverbeds in mountainous areas, Xi’an Chanhe Bridge China was taken as research object. Through comprehensive physical model experiments, influence layout surrounding water flow morphology around bridge piers studied. The relationship between boundary condition...

Bridge piers which are constructed in the track of high water rivers cause some variations in the flow patterns. This variation mostly is a result of the changes in river sections. Decreasing the river section, bridge piers significantly impress the flow patterns. Once the flow approaches the piers, the stream lines change their order, causing the appearance of different flow patterns around th...

Statement of the problem Many partially edentulous situations are present whereby the choice between a removable and a fixed partial denture lies within the delicate balance of a single standing abutment. This abutment is called as a pier abutment. If and when a fixed fixed prosthesis is given in such a case, the retainer over the pier abutment acts as a fulcrum and invariably leads to cement f...

Abstract Scour is the leading cause of bridge collapse beneath any pier located within waterway. A numerical-based hydraulic model named Hydrologic Engineering Centre River Analysis System and a mathematical Florida Department Transport were implemented to investigate their performance accuracy in estimating maximum scour depth piers where large small-scale physical prototypes are used as bench...

Abstract The effect of various parameters flow, sediment and geometric features the bridge on depth shape scour hole occurred underneath a deck model without pier was investigated by series experiments conducted in flume under partially fully submerged flow clear water conditions. were performed with factors such as approach depth, discharge, size, degree submergence, girder location depth. A t...

Scouring around the bridge pier is a natural and complex phenomenon that results in failure. Failure of bridges have potential devastation public safety economic loss, which lead to political consequences environmental impacts. Therefore, it essential countermeasure scour pier. This paper studies effects four different airfoil-shaped collars (i.e., bc1 = 1.5b, bc2 2.0b, bc3 2.5b bc4 3.0b, where...

One of the most important factors in determining the depth of foundations in structures adjacent to the water flow is the scouring phenomenon; the scouring is a phenomenon caused by the interactions between water flow and erodible bed materials, which causes the removal of sediments where hydraulic structures are located, including bridge piers. Every year, a great number of bridges are damaged...