| 跨江大桥桥墩冲刷原因及计算方法探讨 |
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| 引用本文： | 郑继帅.跨江大桥桥墩冲刷原因及计算方法探讨[J].广州航海高等专科学校学报,2011,19(2):18-20. |
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| 作者姓名： | 郑继帅 |
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| 作者单位： | 广东江中高速公路有限公司工程部,广东中山,528414 |
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| 摘 要： | 分析了墩前水表面涡流、墩前向下水流、马蹄形涡流和尾迹涡流等4种不同特征水流对桥墩的影响.从水流形态特征、水流含沙量、河道无序采砂等方面探讨了桥墩冲刷的原因,总结出影响冲刷深度的主要因素:水流特征、河床泥沙性质、桥墩墩形.在合理适用性方面对几种冲刷深度计算公式进行了比选.
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| 关 键 词： | 桥墩 冲刷机理 水流特征 冲刷深度 计算方法 |
Study on Reasons and Calculation Method of Scouring round Bridge Piers |
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| ZHENG Ji-shuai.Study on Reasons and Calculation Method of Scouring round Bridge Piers[J].Journal of Guangzhou Maritime College,2011,19(2):18-20. |
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| Authors: | ZHENG Ji-shuai |
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| Institution: | ZHENG Ji-shuai(Dept.of Engineering,Guangdong Jiangzhong Highway Co.Ltd.Zhongshan Guangdong 528414) |
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| Abstract: | Based on mechanism of bridge piers scouring,several kinds of water flows' impact on piers was analyzed.These flows with different,which formed near the piers,included surface roller,down flow,horseshoe vortex,wake vortex.The reasons for piers scour were investigated in some inspects such as flows' morphological characteristics,flows' sediment concentration,excessive extraction of sand and so on.It is summarized that the influencing factors of scouring depth were flows characteristics,sediment bed properties... |
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| Keywords: | bridge piers scouring mechanism flows' characteristics scouring depth calculation method |
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