| 复线桥区航道的巷道效应分析 |
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| 引用本文： | 邱野,沈小雄.复线桥区航道的巷道效应分析[J].长沙交通学院学报,2011,27(2):46-50. |
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| 作者姓名： | 邱野 沈小雄 |
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| 作者单位： | 长沙理工大学河海工程学院,湖南长沙,410004 |
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| 基金项目： | 西部交通建设科技项目(200832881409) |
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| 摘 要： | 针对2座桥和3座桥构成的复线桥，利用数学模型，计算了不同桥间距和不同斜流交角情况下复线桥的水流流场，得到了修建复线桥后通航净宽的减小值，提出了计算净宽减小值的公式．分析结果表明，随着桥轴线法线方向与水流方向夹角的增大，通航净宽相应减小，需增大航宽；而桥梁间距与桥梁数目的增加，会使桥洞纵深长度增加，巷道效应更加明显，通航净宽也会增大．故桥洞长度及桥轴线法线方向与水流方向的夹角是影响巷道效应的主要因素．
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| 关 键 词： | 复线桥 有效航宽 巷道效应 |
Analysis of the laneway effect of pipeline bridge |
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| QIU Ye,SHEN Xiao-xiong.Analysis of the laneway effect of pipeline bridge[J].Journal of Changsha Communications University,2011,27(2):46-50. |
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| Authors: | QIU Ye SHEN Xiao-xiong |
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| Institution: | QIU Ye,SHEN Xiao-xiong(School of Hydraulic Engineering,Changsha University ofScience & Technology,Changsha 410004,China) |
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| Abstract: | For the pipeline bridge which is constituted by two and three bridges,mathematical model is used to simulate water field of pipeline bridge at different bridge space and different diagonal angle.In order to obain the reduced net width of navigation after the construction of the pipeline bridge,and then the formula is proposed for calculating the reduced net width.The results show that with the increase of the angle between normal direction of bridge axis and the direction of flow,the net width of the naviga... |
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| Keywords: | pipeline bridge effective channel width laneway effect |
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