| 佛山高明大桥桥墩基础冲刷防护水力数值模拟研究 |
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| 引用本文： | 李海彬,黄东,何书琴,李虎成,徐林春.佛山高明大桥桥墩基础冲刷防护水力数值模拟研究[J].广东水利水电,2017(8):9-12. |
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| 作者姓名： | 李海彬 黄东 何书琴 李虎成 徐林春 |
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| 作者单位： | 广东省水利水电科学研究院,广东省水动力学应用研究重点实验室,广东 广州 510635 |
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| 基金项目： | 广东省水利科技创新项目，广东省交通运输厅科技项目，国家重点研发计划项目 |
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| 摘 要： | 受采砂等人类活动影响,高明大桥附近河床下切幅度达10 m,威胁到大桥安全与稳定。该文在分析桥墩附近河床冲刷现状及床沙特性的基础上,通过建立桥址附近河道平面二维水流数学模型,结合经验公式进行桥墩局部冲刷水力计算,预测桥墩局部冲刷坑范围和趋势,据此提出桥墩抛石防护方案,包括防护范围、块石粒径、抛石厚度等。经汛后检测,冲刷防护措施效果较好,可为珠江三角洲类似大桥冲刷防护工程应用提供参考。
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| 关 键 词： | 高明大桥 桥墩冲刷防护 水力数值模拟 局部冲刷 抛石 |
| 收稿时间： | 2017/5/6 0:00:00 |
| 修稿时间： | 2017/5/6 0:00:00 |
Numerical Hydraulic Modeling Study on the Protection of Gaoming Bridge Pier against Local Scour |
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| LI Haibin,HUANG Dong,HE Shuqin,LI Hucheng and XU Linchun.Numerical Hydraulic Modeling Study on the Protection of Gaoming Bridge Pier against Local Scour[J].Guangdong Water Resources and Hydropower,2017(8):9-12. |
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| Authors: | LI Haibin HUANG Dong HE Shuqin LI Hucheng and XU Linchun |
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| Affiliation: | Guangdong Research Institute of Water Resources and Hydropower,Guangdong Engineering Laboratory of Estuary Hydropower,Guangzhou 510635, China,Guangdong Research Institute of Water Resources and Hydropower,Guangdong Engineering Laboratory of Estuary Hydropower,Guangzhou 510635, China,Guangdong Research Institute of Water Resources and Hydropower,Guangdong Engineering Laboratory of Estuary Hydropower,Guangzhou 510635, China,Guangdong Research Institute of Water Resources and Hydropower,Guangdong Engineering Laboratory of Estuary Hydropower,Guangzhou 510635, China and Guangdong Research Institute of Water Resources and Hydropower,Guangdong Engineering Laboratory of Estuary Hydropower,Guangzhou 510635, China |
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| Abstract: | Influenced by sand excavation, riverbed beside Gaoming Bridge deepened 10m, which affecting the bridge safety. Through analyzing the present condition of the river bed scour and sediment characteristic, local scour around bridge piers have been predicted through building a two-dimensional flow model, and combining with the theoretical calculation. Underwater riprap protection scheme including protected range, thickness of ripped-stone layer, have been proposed based on the calculation results. There is good protection effect through practice after seasonal flood, and the research work could give reference for similar protection of bridge projects in Pearl River Delta. |
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| Keywords: | Gaoming bridge bridge pier scour protection numerical hydraulic modeling local scour riprap |
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