摘要
通过对不同水沙条件下冲刷发展过程中3个典型时刻桥墩前、后竖直对称面内流速、紊动量的测量和分析,定性地研究了冲刷发展过程中桥墩周围流场的水力特性、冲刷坑的形成与发展对桥墩周围水流结构作用强度的影响,以及防护工程应该实施的最佳时机。
Based on the measurement and analysis of the velocity and turbulence intensities in the upstream and downstream of the pier in plan of symmetry at three typical moments respectively and under different conditions of flow and sand, this paper studies quantitatively the hydraulic characteristics of the flow field around piers in the course of scouring and the effect of the development of scour pit for the scour energy of the flow around piers, and the best implementation time of the protection engineering as well.
出处
《水运工程》
北大核心
2009年第11期143-152,共10页
Port & Waterway Engineering
基金
江苏省南通市工程流体力学重点实验室资助(DC2008001)
关键词
桥墩
局部冲刷
流场特性
紊动强度
pier
local scour
characteristics of flow field
turbulence intensity
