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...

The Federal Highway Administration’s Hydraulics Research Laboratory has facilities to physically and numerically model hydraulic and sediment transport phenomena to support State highway administration initiatives. Recent advances in physical modeling instrumentation have facilitated flow visualization to support research. Flow visualization is now performed using the hydrogen bubble technique ...

Bridges are built in a variety of locations, many of which are susceptible to earthquakes. These bridges must be built to achieve the objectives of both accelerated bridge construction (ABC) and rapid return to service following a disaster. The concept of designing sacrificial elements to dissipate seismic energy while preserving the integrity of the structure’s other main components is known a...

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...

Replaceable energy dissipation elements can reduce damage to main structures and improve seismic resistance of bridge structures. However, in existing studies, replaceable are mainly arranged the transverse direction structure, while little attention is given longitudinal bridge, which also suffers from serious under earthquakes. This paper proposes an innovative double-limb-thin-wall (DLTW) pi...