Impacts of ice cover on local scour around semi-circular bridge abutment  

作　　者：WU Peng HIRSHFIELD Faye SUI Jueyi 王军 陈胖胖 

机构地区：[1]Environmental Engineering,University of Northern British Columbia [2]School of Civil Engineering,Hefei University of Technology

出　　处：《Journal of Hydrodynamics》2014年第1期10-18,共9页水动力学研究与进展B辑（英文版）

基　　金：funded partially by the Research Project Awards from UNBC;the Natural Science and Engineering Research Council of Canada(NSERC)

摘　　要：The presence of ice cover in winter can significantly change the flow field around bridge abutments, which can also cause a different local scour pattern. To investigate the impacts of ice cover, results from a recent flume experiments were presented. Smooth and rough ice covers were created to investigate the impacts of ice cover roughness on the scour geometry around the semi-circular abutment. Three bed materials were used, with 50D s of 0.58 mm, 0.50 mm, 0.47 mm respectively. Scour volume and scour area were calculated. It was found that the maximum scour depth was located 75o inclined to the flume wall. Under rough ice cover, the scour area and scour depth were the largest. An empirical equation on the maximum scour depth was also developed.The presence of ice cover in winter can significantly change the flow field around bridge abutments, which can also cause a different local scour pattern. To investigate the impacts of ice cover, results from a recent flume experiments were presented. Smooth and rough ice covers were created to investigate the impacts of ice cover roughness on the scour geometry around the semi-circular abutment. Three bed materials were used, with 50D s of 0.58 mm, 0.50 mm, 0.47 mm respectively. Scour volume and scour area were calculated. It was found that the maximum scour depth was located 75o inclined to the flume wall. Under rough ice cover, the scour area and scour depth were the largest. An empirical equation on the maximum scour depth was also developed.

关 键 词：ice cover local scour semi-circular abutment maximum scour depth scour pattern 

分 类 号：U443.22[建筑科学—桥梁与隧道工程] U442.3[交通运输工程—道路与铁道工程]