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结合风洞试验与CFD(Computational Fluid Dynamics)技术提出了一种新方法。该法首先利用CFD确定桥梁表面压力分布及节段模型弹性中心的三分力系数,然后根据风洞试验结果采用最小二乘法确定桥梁节点力荷载。该方法克服了CFD模拟得到的三分力系数通常与风洞试验结果不符的缺点,给出了确定桥梁节点力荷载的有效途径。
Combining with wind tunnel test and CFD (Computational Fluid Dynamics) technology, a new method is proposed. In this method, CFD is used to determine the pressure distribution on the bridge surface and the third-component force coefficient of the elastic center of the segment model. Then, the least square method is used to determine the bridge node force load based on the wind tunnel test results. The method overcomes the shortcomings that the third-component force coefficients obtained by CFD simulation are not consistent with the wind tunnel test results and gives an effective way to determine the force of bridge nodes.