首页 | 本学科首页   官方微博 | 高级检索  
     检索      

????????????????????????о?
引用本文:董年虎,刘沛清,杨明.????????????????????????о?[J].力学与实践,2008,30(2):45-48.
作者姓名:董年虎  刘沛清  杨明
作者单位:北京航空航天大学
摘    要:通过动床试验,结合黄河下游细沙河床研究了大尺度缩窄河道时非恒定流桥墩的局部冲刷. 研究结果表明,非恒定流洪水过程中的桥墩局部冲刷与恒定流的情况相比,两者之间存在差 异而且有必然的联系. 通过影响因素和试验数据的分析,建立了两者之间的关系和相应的非 恒定流桥墩局部冲刷深度计算方法. 经与原型非恒定流洪水实测资料对比,结果合理且比较 符合实际情况.

关 键 词:细沙河床  非恒定流  局部冲刷
收稿时间:2007-7-18
修稿时间:2007年7月18日

RESEARCH OF UNSTEADY LOCALIZED SCOURING ON PIERS NARROWING CURRENT IN LARGE SCALE
DONG Nianhu,LIU Peiqing,YANG Ming.RESEARCH OF UNSTEADY LOCALIZED SCOURING ON PIERS NARROWING CURRENT IN LARGE SCALE[J].Mechanics and Engineering,2008,30(2):45-48.
Authors:DONG Nianhu  LIU Peiqing  YANG Ming
Abstract:Through dynamic river bed experiments and fine sand river bed in lower Yellow River, localized scouring on piers under unsteady flow when river channel is narrowed in large scale is researched. The result indicates that the localized scouring on piers under unsteady flood and scouring under steady flood are different and related necessarily. Through analysis of influencing factors and experiment data, their relation and relevant calculating methods of localized scouring depth on piers under unsteady flow are established. Compared with prototype observed data under unsteady flow flood, the result is reasonable and accords the practice well.
Keywords:
本文献已被 维普 万方数据 等数据库收录!
点击此处可从《力学与实践》浏览原始摘要信息
点击此处可从《力学与实践》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号