THE STUDY OF DENSE CURRENTS EFFECT ON SCOUR BRIDGE PIERDEPTH AND REPRESENTING TWO MODEL FOR ESTIMATION OFWATER-WASHING DEPTH AND THEIR COMPARISON EACHATHER

Destruction cause of most bridges in water-washing world became beyond of legs and retainingwalls many researches performed in findingreliablerelatainingwalells. Many researches’sperformed in finding reliable relation for estimation majority water –washing depth surroundingbridge legs in several recent decades at first ,dense current affect represented on bridge ley in thisstudy , then ,two GMDH and ANFIS model compared each other for estimation scour depth.Generally, three types water-washing may occur in bridge leg plot.

Keywords:

Scour , dense current deposit , GMDH , ANFIS