顺河跨海大桥工程对河道影响数值分析
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摘要
为了研究顺河跨海大桥工程对河道产生的不利影响,建立了包含桥梁工程在内的平面二维水动力数值模型,采用实测潮位资料验证了模型的合理性,并进一步分析了工程对河道壅水、流态以及河床冲刷的影响。研究表明:跨海大桥工程的建立会导致河道水位有微弱的升高,最大壅高仅为6cm;桥位附近流态变化较大,在桥墩处会形成许多小涡旋,在人工岛与桥墩的共同作用下会形成一个局部大涡旋,这些影响导致了河床的局部冲刷,河床的最大冲刷深度为0.83m。
Given that the construction of sea-crossing bridges may have adverse effects on rivers,aplane two-dimensional hydrodynamic numerical model was established.The model was tested and proven to be valid with the measured data of tide water,and was used to analyze the effects of the engineering on the rise of water level,the changes of flow regime,as well as the depth of riverbed scour.The study indicated that the sea-crossing bridge engineering will cause a slight rise in the backwater height of the rivers.The maximum backwater height is only 6cm.But the flow regime will vary greatly as numerous vortices will emerge at the vicinity of the bridge location.These influences will result in local scour of the riverbed,and the maximum scour depth is 0.83 m.
Given that the construction of sea-crossing bridges may have adverse effects on rivers,aplane two-dimensional hydrodynamic numerical model was established.The model was tested and proven to be valid with the measured data of tide water,and was used to analyze the effects of the engineering on the rise of water level,the changes of flow regime,as well as the depth of riverbed scour.The study indicated that the sea-crossing bridge engineering will cause a slight rise in the backwater height of the rivers.The maximum backwater height is only 6cm.But the flow regime will vary greatly as numerous vortices will emerge at the vicinity of the bridge location.These influences will result in local scour of the riverbed,and the maximum scour depth is 0.83 m.
引文
[1]杨文海,路志强,刘涛.跨河桥梁防洪影响评价研究[J].水资源与水工程学报,2013,24(2):163-165.(YANG Wen-hai,LU Zhi-qiang,LIU Tao.Assessment of flood control impact for crossing bridge[J].Journal of Water Resources and Water Engineering,2013,24(2):163-165.(in Chinese))
[2]梁昭云.山区跨河桥梁的阻水壅高影响研究[J].广东水利水电,2015(12):21-25.(LIANG Zhao-yun.Influence of rivercrossing bridge backwater in mountainous areas[J].Guangdong Water Resources and Hydropower,2015(12):21-25.(in Chinese))
[3]张永华,刘国梁,丁昌春.呼口大桥防洪评价雍水及回水计算分析[J].黑龙江水利科技,2016,44(1):10-13.(ZHANG Yonghua,LIU Guo-liang,DING Chang-chun.Backwater and return water calculation analysis of Hukou Bridge flood control evaluation[J].Heilongjiang Science and Technology of Water Conservancy,2016,44(1):10-13.(in Chinese))
[4]段璆.基于二维水流数学模型的壅水分析计算[J].湖南水利水电,2016(2):42-45.(DUAN Qiu.The calculation and analysis of backwater based on 2-d flow mathematical model[J].Hunan Hydro&Power,2016(2):42-45.(in Chinese))
[5]陈文学,穆祥鹏,崔巍.南水北调中线工程桥墩壅水特性研究[J].水利水电技术,2015,46(11):121-125.(CHEN Wen-xue,MU Xiang-peng,CUI Wei.Study on backwater characteristics of bridge-piers of Mid-Route of South-to-North Water Diversion Project[J].Water Resources and Hydropower Engineering,2015,46(11):121-125.(in Chinese))
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[7]果有娜.MIKE21在圆形桥墩对河道洪水影响数值模拟中的探讨[J].水利水电工程设计,2012,31(1):15-18.(GUO You-na.Discussion on numerical simulation of influence of circular bridge piers on river flood with MIKE21[J].Design of Water Conservancy and Hydropower Engineering,2012,31(1):15-18.(in Chinese))
[8]徐林春,黄本胜,郑国栋,等.扩建桥梁工程通航安全水流流态数值模拟研究[J].广东水利水电,2008(8):19-22.(XU Linchun,HUANG Ben-sheng,ZHENG Guo-dong,et al.Numerical simulation of water flow regime in bridge extension project with navigation safety[J].Guangdong Water Resources and Hydropower,2008(8):19-22.(in Chinese))
[9]王川,程伟平,陈一帆.平面水流数值模拟在涉水桥梁防洪影响中的应用[J].科技通报,2014(11):35-40.(WANG Chuan,CHENG Wei-ping,CHEN Yi-fan.Application of plane water flow numerical simulation in river flood control of a wading bridge[J].Bulletin of Science and Technology,2014(11):35-40.(in Chinese))
[10]孙东坡,杨苏汀,宋永军,等.公路斜交桥壅水特性[J].水利水运工程学报,2007(1):41-46.(SUN Dong-po,YANG Su-ting,SONG Yong-jun,et al.Backwater characteristics of speedway skew bridges[J].Hydro-Science And Engineering,2007(1):41-46.(in Chinese))
[11]Erduran K S,Seckin G,Kocaman S,et al.3Dnumerical modelling of flow around a skewed bridge crossing[J].Engineering Applications of Computational Fluid Mechanics,2012,6(6):475-489.
[12]张大茹,王向东,朱毕生.山区河道跨河工程的防洪影响研究[J].泥沙研究,2015(2):17-23.(ZHANG Da-ru,WANG Xiang-dong,ZHU Bi-sheng.The influence of river-crossing engineering on flood-control in mountainous areas[J].Journal of Sediment Research,2015(2):17-23.(in Chinese))
[13]李大鸣,白玲,王志超,等.跨河道大桥防洪影响数学模型的研究与应用[J].水利水电技术,2013,44(12):103-106.(LI Daming,BAI Ling,WANG Zhi-chao,et al.Study on mathematical model for impact from huge river-crossing bridge on flood control and its application[J].Water Resources and Hydropower Engineering,2013,44(12):103-106.(in Chinese))
[14]何彬.库区河道桥梁防洪评价研究[D].兰州:兰州大学,2013.(HE Bin.Study on flood control evaluation of bridge in reservoir area-based on the project of rapid channel from Lanzhou to Yongjing[D].Lanzhou:Lanzhou University,2013.(in Chinese))
[15]张杨.人工岛对河口行洪与冲淤影响的数值模拟研究[D].天津:天津大学,2014.(ZHANG Yang.Numerical simulation research on the impacts of man-made island on flood propagation and erosion-deposition of estuary[D].Tianjin:Tianjin University,2014.(in Chinese))
[16]张新润.有限水深中圆柱型桥墩绕流的模型实验研究[D].大连:大连理工大学,2012.(ZHANG Xin-run.Experimental study on the flow field around cylinder piers in the Limited Depth water[D].Dalian:Dalian University of Technology,2012.(in Chinese))
[17]左生荣.跨海大桥深水桥墩波浪效应研究[D].武汉:武汉理工大学,2013.(ZUO Sheng-rong.Research on wave response of deepwater pier[D].Wuhan:Wuhan University of Technology,2013.(in Chinese))
[18]董胜男.跨河桥梁对河道防洪影响评价问题的研究[D].济南:山东大学,2010.(DONG Sheng-nan.Study on the problem of evaluating the flood-control influence of crossing bridge[D].Jinan:Shandong University,2010.(in Chinese))
[19]李梦龙.潮流作用下桥墩局部冲刷研究[D].天津:天津大学,2012.(LI Meng-long.The research of pier scour under tidal flow[D].Tianjin:Tianjin University,2012.(in Chinese))
[20]齐梅兰.采沙河床桥墩冲刷研究[J].水利学报,2005,36(7):835-839.(QI Mei-lan.Riverbed scouring around bridge piers in river section with sand pits[J].Journal of Hydraulic Engineering,2005,36(7):835-839.(in Chinese))
[21]河北省交通规划设计院.公路工程水文勘测设计规范:JTG C30-2015[M].人民交通出版社,2015.(Hebei Provincial Communications Planning and Design Institute.Design specifications for hydrologic survey of highway engineering:JTG C30-2015[M].China Communications Press,2015.(in Chinese))
[2]梁昭云.山区跨河桥梁的阻水壅高影响研究[J].广东水利水电,2015(12):21-25.(LIANG Zhao-yun.Influence of rivercrossing bridge backwater in mountainous areas[J].Guangdong Water Resources and Hydropower,2015(12):21-25.(in Chinese))
[3]张永华,刘国梁,丁昌春.呼口大桥防洪评价雍水及回水计算分析[J].黑龙江水利科技,2016,44(1):10-13.(ZHANG Yonghua,LIU Guo-liang,DING Chang-chun.Backwater and return water calculation analysis of Hukou Bridge flood control evaluation[J].Heilongjiang Science and Technology of Water Conservancy,2016,44(1):10-13.(in Chinese))
[4]段璆.基于二维水流数学模型的壅水分析计算[J].湖南水利水电,2016(2):42-45.(DUAN Qiu.The calculation and analysis of backwater based on 2-d flow mathematical model[J].Hunan Hydro&Power,2016(2):42-45.(in Chinese))
[5]陈文学,穆祥鹏,崔巍.南水北调中线工程桥墩壅水特性研究[J].水利水电技术,2015,46(11):121-125.(CHEN Wen-xue,MU Xiang-peng,CUI Wei.Study on backwater characteristics of bridge-piers of Mid-Route of South-to-North Water Diversion Project[J].Water Resources and Hydropower Engineering,2015,46(11):121-125.(in Chinese))
[6]Chang W Y,Constantinescu G,Lien H C,et al.Flow structure around bridge piers of varying geometrical complexity[J].Journal of Hydraulic Engineering,2013,139(8):812-826.
[7]果有娜.MIKE21在圆形桥墩对河道洪水影响数值模拟中的探讨[J].水利水电工程设计,2012,31(1):15-18.(GUO You-na.Discussion on numerical simulation of influence of circular bridge piers on river flood with MIKE21[J].Design of Water Conservancy and Hydropower Engineering,2012,31(1):15-18.(in Chinese))
[8]徐林春,黄本胜,郑国栋,等.扩建桥梁工程通航安全水流流态数值模拟研究[J].广东水利水电,2008(8):19-22.(XU Linchun,HUANG Ben-sheng,ZHENG Guo-dong,et al.Numerical simulation of water flow regime in bridge extension project with navigation safety[J].Guangdong Water Resources and Hydropower,2008(8):19-22.(in Chinese))
[9]王川,程伟平,陈一帆.平面水流数值模拟在涉水桥梁防洪影响中的应用[J].科技通报,2014(11):35-40.(WANG Chuan,CHENG Wei-ping,CHEN Yi-fan.Application of plane water flow numerical simulation in river flood control of a wading bridge[J].Bulletin of Science and Technology,2014(11):35-40.(in Chinese))
[10]孙东坡,杨苏汀,宋永军,等.公路斜交桥壅水特性[J].水利水运工程学报,2007(1):41-46.(SUN Dong-po,YANG Su-ting,SONG Yong-jun,et al.Backwater characteristics of speedway skew bridges[J].Hydro-Science And Engineering,2007(1):41-46.(in Chinese))
[11]Erduran K S,Seckin G,Kocaman S,et al.3Dnumerical modelling of flow around a skewed bridge crossing[J].Engineering Applications of Computational Fluid Mechanics,2012,6(6):475-489.
[12]张大茹,王向东,朱毕生.山区河道跨河工程的防洪影响研究[J].泥沙研究,2015(2):17-23.(ZHANG Da-ru,WANG Xiang-dong,ZHU Bi-sheng.The influence of river-crossing engineering on flood-control in mountainous areas[J].Journal of Sediment Research,2015(2):17-23.(in Chinese))
[13]李大鸣,白玲,王志超,等.跨河道大桥防洪影响数学模型的研究与应用[J].水利水电技术,2013,44(12):103-106.(LI Daming,BAI Ling,WANG Zhi-chao,et al.Study on mathematical model for impact from huge river-crossing bridge on flood control and its application[J].Water Resources and Hydropower Engineering,2013,44(12):103-106.(in Chinese))
[14]何彬.库区河道桥梁防洪评价研究[D].兰州:兰州大学,2013.(HE Bin.Study on flood control evaluation of bridge in reservoir area-based on the project of rapid channel from Lanzhou to Yongjing[D].Lanzhou:Lanzhou University,2013.(in Chinese))
[15]张杨.人工岛对河口行洪与冲淤影响的数值模拟研究[D].天津:天津大学,2014.(ZHANG Yang.Numerical simulation research on the impacts of man-made island on flood propagation and erosion-deposition of estuary[D].Tianjin:Tianjin University,2014.(in Chinese))
[16]张新润.有限水深中圆柱型桥墩绕流的模型实验研究[D].大连:大连理工大学,2012.(ZHANG Xin-run.Experimental study on the flow field around cylinder piers in the Limited Depth water[D].Dalian:Dalian University of Technology,2012.(in Chinese))
[17]左生荣.跨海大桥深水桥墩波浪效应研究[D].武汉:武汉理工大学,2013.(ZUO Sheng-rong.Research on wave response of deepwater pier[D].Wuhan:Wuhan University of Technology,2013.(in Chinese))
[18]董胜男.跨河桥梁对河道防洪影响评价问题的研究[D].济南:山东大学,2010.(DONG Sheng-nan.Study on the problem of evaluating the flood-control influence of crossing bridge[D].Jinan:Shandong University,2010.(in Chinese))
[19]李梦龙.潮流作用下桥墩局部冲刷研究[D].天津:天津大学,2012.(LI Meng-long.The research of pier scour under tidal flow[D].Tianjin:Tianjin University,2012.(in Chinese))
[20]齐梅兰.采沙河床桥墩冲刷研究[J].水利学报,2005,36(7):835-839.(QI Mei-lan.Riverbed scouring around bridge piers in river section with sand pits[J].Journal of Hydraulic Engineering,2005,36(7):835-839.(in Chinese))
[21]河北省交通规划设计院.公路工程水文勘测设计规范:JTG C30-2015[M].人民交通出版社,2015.(Hebei Provincial Communications Planning and Design Institute.Design specifications for hydrologic survey of highway engineering:JTG C30-2015[M].China Communications Press,2015.(in Chinese))