摘要
根据平面二维非恒定流运动方程和连续方程推导出模型相似比尺,从而进行模型设计。模型上边界选在老盐仓,下边界定在金山,模拟总水域面积约2200km2;模型先按1998年实测的准1∶50000水下地形制作,并利用1998年大范围水文资料作初步验证,再运用2000年9月杭州湾实测水下地形及大范围同步水文测验资料对模型进行正式验证。验证结果表明,模型沿程潮位、模型测点流速、流向等均与水文测验资料吻合良好,达到了较高的验证精度,为杭州湾跨海大桥建成后对周围水域变化情况的预测和桥轴线与桥孔布设合理性论证奠定了坚实的基础。
The similarity scales can be deduced by using the plane two\|dimensional (2D) unsteady flow equation of momentum and continuity. Laoyancang and Jinshan are selected as the upstream and downstream boundaries. Total simulation area is about 2 200 km\+2. The physical model moulded to the underwater charts of September 2000 is verified with hydrometic data at the same time. The graphs of tidal level and the velocity in the model are conferming with the prototype. The verification has reached a higher accuracy, so that the reliable base for the research on the influence of the Hangzhou Bay Major Bridge and the optimization of axes of the bridge is established.
出处
《东海海洋》
2002年第4期50-56,共7页
Donghai Marine Science
基金
杭州湾跨海大桥定床模型试验专题研究项目
关键词
杭州湾跨海大桥
河工模型
验证
比尺
the Hangzhou Bay Major Bridge
physical river model
verification
scale
