非均匀沙质河床桥梁基础局部冲刷研究综述
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摘要
桥梁基础局部河床冲刷造成桥墩基础暴露、埋深降低,是导致桥梁基础损毁、承载能力降低、直至桥梁整体破坏的关键因素之一。因工程地质、水文、桥梁结构等差异,桥墩基础冲刷影响因素众多,其中泥沙非均匀性是重要因素之一,对桥梁基础局部冲刷演变产生重要影响。本文从理论公式、冲刷试验、数值模拟三方面着手,概述了非均匀沙质河床下桥梁基础局部冲刷的研究现状和进展,并对相关研究工作进行了思考。
The local riverbed erosion of bridge foundation reduces the exposed buried depth of bridge pier foundation,which is one of the key factors leading to the decrease of bearing capacity of bridge foundation and the whole destruction of bridge.Due to the differences in engineering geology and hydrology of bridge struc-ture,there are many factors affecting the scour of bridge pier foundation, among which the heterogeneity of sediment is one of the important factors,which has an important influence on the local scour evolution of bridge foundation. In this paper,the research status and progress of local scour of bridge foundation under non-uniform sandy riverbed are summarized from three aspects of theoretical formula scour test numerical simulation.
The local riverbed erosion of bridge foundation reduces the exposed buried depth of bridge pier foundation,which is one of the key factors leading to the decrease of bearing capacity of bridge foundation and the whole destruction of bridge.Due to the differences in engineering geology and hydrology of bridge struc-ture,there are many factors affecting the scour of bridge pier foundation, among which the heterogeneity of sediment is one of the important factors,which has an important influence on the local scour evolution of bridge foundation. In this paper,the research status and progress of local scour of bridge foundation under non-uniform sandy riverbed are summarized from three aspects of theoretical formula scour test numerical simulation.
引文
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[2]王飞.砂质河床桥墩局部冲刷深度预测及数值模拟研究[D].中国地质大学(北京),2017.
[3]浦承松,梅伟,朱宝土,张天力,詹义正.非均匀沙干容重计算方法的探讨[J].武汉大学学报(工学版),2010,43(03):320-324+329.
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[13]Pournazeri S,Li S S,Haghighat F.A bridge Pier Scour Model with non-uniform Sediments[J].Water Management,2015,167(9):499-511.
[14]葛华.水库下游非均匀沙输移及模拟技术初步研究[D].武汉大学,2010.
[15]甘明辉,杨国录,吴虹娟,余明辉,谢翠松,袁雄燕.沙质河床二维粗化数值模拟初探[J].水动力学研究与进展(A辑),2002(06):691-700.
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[17]吉萌.基于CPFD Barracuda软件的沿河路基边坡冲刷研究[D].东南大学,2017.
[2]王飞.砂质河床桥墩局部冲刷深度预测及数值模拟研究[D].中国地质大学(北京),2017.
[3]浦承松,梅伟,朱宝土,张天力,詹义正.非均匀沙干容重计算方法的探讨[J].武汉大学学报(工学版),2010,43(03):320-324+329.
[4]赵凯.桥墩局部冲刷模拟试验研究[D].南京:南京水利科学研究院,2009.
[5]王思莹,段文刚,李利.宽级配非均匀沙运动特性研究[J].人民长江,2011,42(13):72-75+105.
[6]Einstein H.A.The bed load function for sediment transportation in open channel flows.U.S.Dept.Agri,Tech Bull,1950,1026:71,钱宁译:明渠水流的挟沙力[M].北京:水利出版社,1956.
[7]韩其为,何明民.泥沙运动统计理论[M].北京:科学出版社,1984.
[8]马菲,韩其为,李大鸣.非均匀沙分组起动流速[J].天津大学学报,2010,43(11):977-980.
[9]秦荣昱.不均匀沙的推移质输沙率[J].水力发电,1981(08):22-28.
[10]张溯明.分层土桥墩局部冲刷的试验研究[D].福州大学,2010.
[11]孙东坡,刘明潇,王鹏涛,李国栋,赵亚飞,董明家.双峰型非均匀沙推移运动特性及输移规律[J].水科学进展,2015,26(05):P660-667.
[12]许琳娟,曹文洪,刘春晶.非均匀沙运动特性试验[J].水科学进展,2016,27(06):841-848.
[13]Pournazeri S,Li S S,Haghighat F.A bridge Pier Scour Model with non-uniform Sediments[J].Water Management,2015,167(9):499-511.
[14]葛华.水库下游非均匀沙输移及模拟技术初步研究[D].武汉大学,2010.
[15]甘明辉,杨国录,吴虹娟,余明辉,谢翠松,袁雄燕.沙质河床二维粗化数值模拟初探[J].水动力学研究与进展(A辑),2002(06):691-700.
[16]徐成伟.葛洲坝水利枢纽下游近坝段二维水沙数值模拟[J].河海大学学报(自然科学版),2008(02):213-218.
[17]吉萌.基于CPFD Barracuda软件的沿河路基边坡冲刷研究[D].东南大学,2017.