Mutual interference of bridge piers placed in staggered arrangement on local scour

摘要

The work reported herein is concerned with the experimental evaluation of effect of mutualrninterference of bridge piers on local scour. A series of clear-water scour experiments was conducted usingrngalvanized steel circular cylindrical pier models founded in staggered arrangement in cohesionless uniformrncoarse sediment bed in the re-circulating tilting flume under steady uniform flow clear water scour conditionsrnat flow intensity equal to 0.95. The data on scour depth and other characteristics of scour holes are collected,rnprocessed and analyzed. Maximum effect of mutual interference is found at relative pier spacing x_c/b=10 andrnminimum at relative pier spacing x_c/b=40.