Investigation of the scouring pattern around the fulcrum of the bridge, sloping support with their observation and comparison

Subject Areas : Water Resources

Behnam Nashaei ¹ , mohsen solimani babarsad ²

1 - Investigation of the scouring pattern around the fulcrum of the bridge, sloping support with their observation and comparison.
2 - Assistant professor

Received: 2018-09-01 Accepted : 2019-04-23 Published : 2018-08-23

Keywords: gap, Factors affecting scour, tilt, bridge abutments, reducing scour,

Abstract :

Many bridges are destroyed annually due to water erosion around their bases and their supports. Using the gap is one of the best ways to reduce the local scouring of the bridge supports. In this study, the effect of different fluxes on the effect of the gap in the experimental flume on the rectangular bridge support was investigated. Then, using the experimental model, the effect of slit and slope was studied simultaneously on the scour depth around the bridge supports and compared with non-slit and non-slip mode. The results showed that creating a gap on the base and simultaneously sloping the base significantly reduces the probability of scour stress. The results of the experiments show that the slope in the rectangular support reduces the maximum scour depth of 25% in a flow rate of 28 m 3 / h, and the simultaneous use of slopes and gaps at the base reduces the maximum scour depth by 25% The control stand in Dubai is 28 cubic meters per hour.