张力膜结构耦合风振分析

Application of RNG k-ε Model in Wind-induced Vibration of the Membrane Structure

实验及计算结果证明,张力膜结构的风振分析必须考虑其与风场间的耦合效应。但到目前为止,还没有一种普遍适用的简化力学模型能较好地对其进行模拟。针对该问题对双坡张力膜屋面利用RNGk-ε模型进行了考虑流固耦合的直接数值模拟,并与实验结果及不考虑耦合的计算结果进行了对比,结果表明该方法可以较好地求解张力膜结构的耦合风振问题。

It has been proved by the results of test and computation that the coupling effect should be considered in the analysis of windinduced response of membrane structures. By now, a widely applicatable simplified model on the problem has not been found. Considering the effect of fluid-structure interaction, the problem for a building with gable roof was computed by the technique of numerical simulation based on the RNG κ-ε turbulence model. By comparison with the wind tunnel test and the results of computation with the coupling effect not considered, it is confirmed that the method can solve the problem of wind-induced response for the membrane structure effectively.