| 鸭绿江公路大桥桥区河段平面二维潮流泥沙数学模型研究 |
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| 引用本文： | 黄美玲,;张华庆.鸭绿江公路大桥桥区河段平面二维潮流泥沙数学模型研究[J].水道港口,2014(4):358-362. |
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| 作者姓名： | 黄美玲 ;张华庆 |
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| 作者单位： | [1]哈尔滨工程大学船舶工程学院,哈尔滨150001; [2]交通运输部天津水运工程科学研究所工程泥沙交通行业重点实验室,天津300456 |
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| 摘 要： | 为研究在建鸭绿江公路大桥桥墩及施工栈桥等对航道条件的影响,建立了二维潮流泥沙数学模型,对桥区河段水动力条件和河床冲淤变化进行了模拟研究。研究结果表明大桥施工期桥区河段出现的剧烈变形主要由河床自然演变造成,淤积的主要原因是前期冲刷量大、河床自动恢复平衡的结果。施工栈桥和桥墩也对淤积产生一定贡献,拆除后河床会产生一定的冲刷和恢复调整。
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| 关 键 词： | 潮流泥沙数值模拟 水动力变化 河床冲淤变化 鸭绿江公路大桥 |
Study on 2-D tidal current and sediment mathematical model of the Yalu River Highway Bridge |
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| Institution: | HUANG Mei-ling, ZHANG Hua-qing (1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001 ,China; 2. Tianjin Research Institute for Water Transport Engineering, Key Laboratory of Engineering Sediment, Ministry of Transport, Tianjin 300456, China) |
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| Abstract: | To study the influence of bridge piers and construction trestles of the Yalu River Highway Bridge on channel conditions under construction, a 2-D tidal mathematical model was established in this paper. The changes of hydrodynamic conditions and riverbed sediment were also studied with the tidal current numerical simulation method. The results show that severe riverbed deformation during the bridge construction period is mainly caused by river natural evolution, and the main cause of sedimentation is the strong erosion at early stage and automatic re- balance of riverbed. Bridge piers and construction trestles also have a certain contribution to the deposition. After the demolition of construction trestles, riverbed will produce a certain scour and recovery adjustment period. |
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| Keywords: | tidal current and sediment numerical simulation changes of hydrodynamic conditions changes of riverbed sediment the Yalu River Highway Bridge |
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