潮流作用下桥墩局部冲刷规律研究  

Research on Local Scour Law at Bridge Piers Under Tidal Current Action

作　　者：韩海骞[1] 熊绍隆[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020

出　　处：《浙江水利科技》2014年第5期87-91,共5页Zhejiang Hydrotechnics

摘　　要：桥墩局部冲刷深度的可靠预测是保证桥梁安全运行的基础。我国对河流上的桥墩局部冲刷做过大量研究,但河口海湾及沿海地区跨海湾桥梁,往往水域宽阔,作用水流多为极其复杂的双向潮流,目前针对性的研究尚少。通过对钱塘江河口及杭州湾的嘉绍大桥、杭州湾大桥和金塘大桥在潮流作用下的桥墩局部冲刷开展水槽试验,研究了桥墩在潮流作用下的冲刷坑形态与冲刷过程,并对潮流作用下桥墩局部冲刷深度的主要影响因子进行了分析。The destruction of the bridge is mainly caused by the local scour at piers, so a great deal of research have been made and get many achievements. However with the development of estuarine, coastal and offshore engineering the result hash＇ t fit for the local scour at piers over tidal waterways because of complicated tidal current. Based on the data of scour depth at piers over Qiantang estuary under tidal current action, such as Hangzhou - Bay major bridge etc, the principles of local scour at bridge piers and scour processes are investigated, and effects of every kind of parameters on maximum scour depth are analyzed.

关 键 词：潮流 泥沙 桥墩 局部冲刷 

分 类 号：TV143[水利工程—水力学及河流动力学]