[1]熊文,汪吉豪,叶见曙.结构形式对桥墩局部冲刷三维性态发展的影响[J].东南大学学报(自然科学版),2014,44(1):155-161.[doi:10.3969/j.issn.1001-0505.2014.01.028]
 Xiong Wen,Wang Jihao,Ye Jianshu.Effect of pier structures on local scour 3D developments[J].Journal of Southeast University (Natural Science Edition),2014,44(1):155-161.[doi:10.3969/j.issn.1001-0505.2014.01.028]
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结构形式对桥墩局部冲刷三维性态发展的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第1期
页码:
155-161
栏目:
交通运输工程
出版日期:
2014-01-18

文章信息/Info

Title:
Effect of pier structures on local scour 3D developments
作者:
熊文汪吉豪叶见曙
东南大学交通学院, 南京 210096
Author(s):
Xiong Wen Wang Jihao Ye Jianshu
School of Transportation, Southeast University, Nanjing 210096, China
关键词:
桥墩结构 局部冲刷 冲刷深度 冲刷坑形态 冲刷影响区域
Keywords:
pier structures(shapes) local scour scour depth scour development pattern scour influence area
分类号:
U442.5
DOI:
10.3969/j.issn.1001-0505.2014.01.028
摘要:
选用基于动网格自更新技术的三维CFD冲刷模型,可以解决既有一维、二维计算研究方法的局限性以及准确性问题,对桥墩冲刷以及周边流场三维性态进行全过程动态跟踪分析.首先采用经典B.W.Melville实验环境以及实验数据,分别从流场、流速以及冲刷坑进行冲刷模型的准确性验证.进而利用该数值模型分别对3种典型桥墩(单柱墩、双柱墩、排墩)周边河床的冲刷深度、冲刷坑形态以及冲刷影响区域进行数值分析,通过数据分析得出各自完全不同的冲刷发展趋势与性态特征.通过对比分析可以看出,桥墩结构形式对桥墩局部冲刷三维性态发展有着显著影响,区分桥墩结构形式对桥墩冲刷设计、理论分析以及长期监测方案设置具有相当的必要性与重要性.
Abstract:
In the present study, a three-dimensional(3D)computational fluid dynamics(CFD)numerical model is applied to simulate the local bridge scour based on the dynamic mesh techniques, which solves the limitation and accuracy issues of the existing 1D and 2D methodologies. Using this model, the local scour 3D Development process including the surrounding flow field can be traced in real time. The simulation accuracy is proved by comparing the numerical results to the measuring data in the classic B.W.Melville experiment from the viewpoints of flow field, velocity, and scour hole. After that the scour depth, scour development pattern, and scour influence area are numerically investigated under three different typical pier structures(shapes). By conducting data analysis this simulation gives that different pier structures(shapes)result in totally different local scour results including developing trend and characteristics. It can be concluded that the effects of pier structures(shapes)on local scour 3D development is very obvious, which should be necessary and important in the scour design, analysis and long-term monitoring.

参考文献/References:

[1] Kattell J, Eriksson M. Bridge scour evaluation: screening, analysis, and countermeasures [M]. San Dimas, CA, USA: USDA Forest Service, 1998: 1-12.
[2] Hunt E B. Monitoring scour critical bridges [M].Washington, DC, USA: Transportation Research Board, 2009: 1-10.
[3] Deng L, Cai C S. Applications of fiber optic sensors in civil engineering [J]. Structural Engineering & Mechanics, 2007, 25(5): 577-596.
[4] 中交公路规划设计院. JTGD60—2004公路桥涵设计通用规范[S]. 北京:人民交通出版社, 2004.
[5] 郭辉, 齐梅兰. 跨河桥梁压缩冲刷数值模拟研究[J]. 中国铁道科学, 2011, 32(5): 43-49.
  Guo Hui, Qi Meilan. Numerical simulation study on the contraction scour of bridge cross the river [J]. China Railway Science, 2011, 32(5): 43-49.(in Chinese)
[6] Melville B M. Local scour at bridge sites [D]. Auckland, New Zealand: School of Engineering, University of Auckland, 1975.
[7] Sarker M A. Flow measurement around scoured bridge piers using acoustic-doppler velocimeter(ADV)[J]. Flow Measurement and Instrumentation, 1998, 9(4): 217-227.
[8] Khosronejad A, Kang S, Sotiropoulos F. Experimental and computational investigation of local scour around bridge piers [J]. Advances in Water Resources, 2012, 37(3): 73-85.
[9] 赵振兴, 何建京. 水力学[M]. 2版. 北京:清华大学出版社,2011: 5-35.
[10] 钱宁, 万兆惠. 泥沙运动力学[M]. 北京:科学出版社,2003: 245-257.
[11] 陈小莉. 局部绕流冲刷机理及数值模拟研究[D]. 北京:清华大学水利水电工程系,2008.
[12] 凌建明, 林小平, 赵鸿铎. 圆柱形桥墩附近三维流场及河床局部冲刷分析[J]. 同济大学学报:自然科学版, 2007, 35(5): 582-586.
  Ling Jianming, Lin Xiaoping, Zhao Hongduo. Analysis of three-dimensional flow field and local scour of riverbed around cylindrical pier [J]. Journal of Tongji University: Natural Science, 2007, 35(5): 582-586.(in Chinese)

备注/Memo

备注/Memo:
收稿日期: 2013-06-20.
作者简介: 熊文(1982—),男,博士,讲师,wxiong@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51208097)、高等学校博士学科点专项科研基金资助项目(20120092120058)、江苏省自然科学基金资助项目(BK2012343).
引用本文: 熊文,汪吉豪,叶见曙.结构形式对桥墩局部冲刷三维性态发展的影响[J].东南大学学报:自然科学版,2014,44(1):155-161. [doi:10.3969/j.issn.1001-0505.2014.01.028]
更新日期/Last Update: 2014-01-20