摘要
研究桥梁的抗风性能时,三分力系数可影响分析精度,在研究桥梁抗风性能时常采用风洞试验进行桥梁气动稳定的测试工作,但采用此种方法测试时需要较长的周期及较高费用,加之难以实现流动可视化,导致其应用受到一定限制。随着CFD方法的发展,使风洞试验被替换成为可能,尽管风动试验不能被CFD方法完全取代,但仍可提升抗风性能分析的精确性。文章首先分析了桥梁抗风分析时仅应用抗风设计规范存在的局限性,接着介绍了CFD及其在桥梁工程中应用的必要性,最后分析了基于CFD桥梁典型断面三分力系数差异。
The study on wind resistant performance of the bridge, a parameter analysis accuracy for three component coefficients, so far, the test work still stable bridge gas by using wind tunnel test, but the test method requires a relatively long cycle and high cost, and difficult to achieve flow visualization, leading to its application limited.With the development of CFD （Computational Fluid Dynamics） method of development, make the wind tunnel test was replaced as possible, although the wind cannot be completely replace the CFD test method, but the accuracy of the approval to increase the wind resistance analysis.In this paper, firstly analyzes the limitations of the bridge wind resistance analysis only application of wind resistant design code exists, then introduces the necessity of CFD and its application in bridge engineering, finally analyzes the difference between the typical section of the three component coefficients based on CFD bridge.
出处
《建筑技术开发》
2017年第1期131-132,共2页
Building Technology Development
关键词
CFD
桥梁断面
三分力系数
差异分析
CFD ： bridge section ： three component coefficient
difference analysis
作者简介
王锋（1984-），男，湖北天门人，讲师，主要研究方向为土木工程专业的教学。
