| 河口海岸桥隧工程设计流速推算 |
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| 引用本文： | 潘军宁,辛文杰,何杰,王红川.河口海岸桥隧工程设计流速推算[J].水科学进展,2019,30(6):845-853. |
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| 作者姓名： | 潘军宁 辛文杰 何杰 王红川 |
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| 作者单位： | 1.南京水利科学研究院港口航道泥沙工程交通行业重点实验室, 江苏南京 210024; |
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| 基金项目： | 国家重点研发计划资助项目（2017YFC1404200）；国家自然科学基金资助项目（51520105014） |
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| 摘 要： | 跨海桥隧工程设计需要推算工程位置不同重现期设计流速，由于现场缺乏长期实测流速资料，设计流速推算存在很大困难。研究提出了采用不同重现期典型风暴潮过程推算河口海岸设计流速的数值模拟方法，对河口地区考虑洪水径流与风暴潮流的耦合。在依据澳门验潮站1925—2003年实测潮位资料分析珠江口海域风暴潮过程特征的基础上，结合潮位和潮差年极值频率分析结果构建了不同重现期典型风暴潮潮型。采用平面二维水动力数学模型模拟了不同重现期风暴潮和上游一般洪水组合条件下珠江口水域的流场，得出港珠澳大桥沿线各控制点处设计流速。
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| 关 键 词： | 跨海桥隧 设计流速 风暴潮 数值模拟 |
| 收稿时间： | 2019-01-01 |
Estimation of design flow rates for bridge and tunnel engineering for estuaries and coasts |
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| PAN Junning,XIN Wenjie,HE Jie,WANG Hongchuan.Estimation of design flow rates for bridge and tunnel engineering for estuaries and coasts[J].Advances in Water Science,2019,30(6):845-853. |
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| Authors: | PAN Junning XIN Wenjie HE Jie WANG Hongchuan |
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| Affiliation: | 1.Key Laboratory of Port, Waterway and Sedimentation Engineering of the Ministry of Transport, Nanjing Hydraulic Research Institute, Nanjing 210024, China;2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China |
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| Abstract: | During the design process of sea-crossing bridges and tunnels,it is necessary to estimate the design flow velocities at different recurrence periods for the project location. However,the lack of on-site long-term flow observation data makes such estimations very difficult. Based on typical storm surge processes with different return periods,a numerical method was proposed for estimating design flow velocities for estuaries and coastal areas,for which the coupling of flood runoff and storm tidal currents was considered for the estuarine areas. According to the measured tide level data from the Macao tide station from 1925 to 2003,the characteristics of historical storm surge processes in the Pearl River estuary were analyzed,and typical storm surge processes of different return periods were obtained based on the results of the analysis of annual extreme frequencies of tidal levels and tidal ranges. Then,a horizontal two-dimensional hydrodynamic numerical model was established to simulate the flow field in the Pearl River estuary under the combined conditions of storm surges with different return periods and general upstream flooding. With such a model,design flow velocities at control points along the Hong Kong-Zhuhai-Macao Bridge were determined. |
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| Keywords: | sea-crossing bridge tunnel design flow velocity storm surge numerical simulation |
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