| 基于桥区水流数值模拟的桥墩对通航影响分析 |
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| 引用本文： | 范平易,邹早建,汪淳. 基于桥区水流数值模拟的桥墩对通航影响分析[J]. 中国航海, 2010, 33(1) |
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| 作者姓名： | 范平易 邹早建 汪淳 |
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| 作者单位： | 1. 上海交通大学,船舶海洋与建筑工程学院,上海,200240
2. 上海交通大学,船舶海洋与建筑工程学院,上海,200240;上海交通大学,海洋工程国家重点实验室,上海,200240 |
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| 基金项目： | 国家863计划课题，国家自然科学基金项目 |
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| 摘 要： | 建桥后桥墩会干扰桥区水流的流动,进而对桥区通航产生不利影响。为了保证桥区通航安全,有必要了解建桥前后桥区水流的变化情况。数值模拟方法是桥梁设计阶段分析建桥前后桥区水流变化及其对通航影响的一种有效方法。以长江河口地区为例,通过桥区水流数值模拟分析建桥对通航的影响。首先建立了长江河口段的江阴至青龙港(北支)、杨林(南支)河段的二维有限元水动力数学模型,并用实测的潮位和流速资料对模型进行了验证;随后以苏通大桥为例建立桥墩模型进行数值模拟,从建桥前后流速和流向的变化两方面分析了建桥对通航的影响,并计算了通航影响宽度。算例结果表明所采用的数值模拟方法及其软件具有工程实用性,可用于分析建桥对通航的影响。
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| 关 键 词： | 水路运输 数值模拟 桥区 水流 桥墩 通航影响 |
Analysis of Piers Influence on Navigation Based on Numerical Simulation of Bridge Area Flow |
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| FAN Ping-yi,ZOU Zao-jian,WANG Chun. Analysis of Piers Influence on Navigation Based on Numerical Simulation of Bridge Area Flow[J]. Navigation of China, 2010, 33(1) |
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| Authors: | FAN Ping-yi ZOU Zao-jian WANG Chun |
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| Affiliation: | FAN Ping-yi~1,ZOU Zao-jian~(1,2),WANG Chun~1(1.School of Naval Architecture,Ocean , Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China,2.State Key Laboratory of Ocean Engineering,China) |
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| Abstract: | Flow in bridge area is disturbed by bridge piers,which has negative impacts on navigation.In order to ensure navigation safety in bridge area,it is necessary to know the flow changes before and after bridge construction.In bridge design stage,numerical simulation is an effective method to analyze flow variation and its impacts on navigation.By taking the Yangtze River Estuary as an example,the analysis of bridge construction effects on navigation in bridge area is carried out.A 2-D finite element mathematic... |
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| Keywords: | waterway transportation numerical simulation bridge area flow bridge pier influence on navigation |
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