基于数值风洞的结构气动选型与风荷载计算

Numerical Simulation Researches on the Wind Loads and Optimization of Building Structures

数值风洞模拟相对于风洞实验具有计算周期短、实施成本低的特点,并且对结构平均风荷载的模拟具有较高的精度、计算结果比实验结果更完备。数值风洞技术的以上优点使其非常适用于建筑结构前期的气动选型与优化。本文以抚顺生命之环为例,展示了数值风洞技术在结构气动选型方面的特点,并给出了最终方案的风荷载结果。

Compare with the wind tunnel experiment,the virtual wind-tunnel simulation has many advantages, such as no experiment model, less design time and less implementation cost. In addition, the virtual wind-tunnel simulation has high accuracy in building's mean wind load and more detail than wind tunnel experiment. The advantages above make wind tunnel technology ideal for pre-selection and optimization of building structure. Taking the life ring of fushun as an example, this paper introduces the advantages of wind tunnel technology in structures' aerodynamic shape and shows results of wind load.