摘要
河口感潮地区大型桥梁的建设对桥墩稳定性提出了更高的要求。在现有的国内外研究成果的基础上,借鉴国内外现有公式结构,从能量守恒的角度出发,建立了一种结构简单、物理意义清晰的潮流作用下桥墩局部冲刷深度新公式。利用最小二乘法,结合实测资料,拟合确定了公式参数,并对新公式进行了验证。验证发现新公式计算结果精度较高,能较好地反映实际情况,可作为实际应用的一种参考。
The construction of the large bridge in the estuary tidal areas puts forward higher requirements for the stability of bridge piers. On the basis of the existing research results in China and abroad, establishing a new formula of local scour depth at bridge piers under tidal flow with a simple structure and clear physical meaning from the view of energy conservation. Using the least squares method, combined with the measured data, the formula parameters are fitted and the new formula is validated. Through the verification, it is found that the formula has high accuracy and accords with the actualities. In conclusion, it can provide some reference for practical application.
作者
高徐昌
姚炎明
Gao Xuchang;Yao Yanming(Institute of Port,Costal and Offshore Engineering,Zhejiang University,Hangzhou 310058,China)
出处
《科技通报》
2019年第1期232-235,共4页
Bulletin of Science and Technology
关键词
潮流
桥墩
局部冲刷
能量守恒
tidal flow
bridge pier
local scour
energy conservation
