Abstract
A set of laboratory experiments were conducted to study the effect of using a Strip Guide Flow Panel device to reduce scour process effects around a bridge pier. Three cylindrical piers of different diameter values and three different Strip Guide Flow Panel devices were used. Every Strip Guide Flow Panel device is simulated by two arms connected together at one of their edges at a right angle. The length of every arm is selected in a way to cover the pier diameter. Every Strip Guide Flow Panel was mounted on the upstream face of the corresponding cylindrical pier diameter at elevation adjacent to the flume bed. A uniform sized sediment were used as a bed material. Based on the experimental data, an acceptable range of scour reduction efficiency (35.71-66.67%) and high hydraulic safety factors were obtained when using Strip Guide Flow Panel. Also it is found that the scour depth when using Strip Guide Flow Panel is small comparing with corresponding potential and maximum scour depth values. So it can be concluded that the Strip Guide Flow Panel device can work like a turbulence kinetic energy dissipater to reduce the risk of scour around the pier during the serviceability life of bridge structure.
Highlights
A set of laboratory experiments were conducted to study the effect of using a Strip Guide Flow Panel device to reduce scour process effects around a bridge pier
For constant H, as the pier diameter increases, the pier wetted area increase and this led to increasing in eroding forces that exerted on the sand material close to pier and increasing the scour depth
A series of laboratory experiments were conducted in an open channel flume to study the effect of the Strip Guide Flow Panel (SGFP) device in reducing the scour effects around a bridge pier
Summary
A set of laboratory experiments were conducted to study the effect of using a Strip Guide Flow Panel device to reduce scour process effects around a bridge pier. To reduce the scour depth around bridge pier, several scour reduction measure devises have been proposed such as, collar, bed sill, and pier slot. A Strip Guide Flow Panel (SGFP) device which located at a specified location at the bridge pier has been used to reduce the local scour process effect. The SGFP device is one of the altering scour reduction measure that used adequately to prevent and/or deflect the local scour mechanisms in order to reduce the local scour adjacent to the pier. This study has been investigated the effect and efficiency of SGFP device in reducing the local scour depth that formed around bridge pier. The study is limited to clear water scour condition and a uniform cohesion less material
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