不同跨度的双跨拱形屋面的积雪分布研究

RESEARCH ON SNOW DISTRIBUTION OF DOUBLE-SPAN GABLE ROOFS WITH DIFFERENT SPANS

为探究对双跨拱形屋面的风致雪漂移规律,采用Mixture多相流模型和k-kl-ω模型,选择双跨拱形屋面作为研究对象,分析在不同矢跨比及风速下的积雪分布形态。研究结果表明,在高风速自然条件下,双跨拱形屋面在屋脊处承受更严重的雪荷载。此外,前跨侵蚀区和后跨沉积区的大小差异导致双跨拱形屋面前后跨的不均匀积雪分布。研究的结果为进一步探索相关问题和实际工程提供参考依据。

The paper investigates the snow drifting patterns on double-span arch-shaped roofs.Different-span dou⁃ble-span arch-shaped roofs are simulated by using the Mixture Multiphase Flow model and k-kl-ωmodel to study the distribution of roof friction velocity and the final snow accumulation patterns under different wind speeds and span ratios.The results show that the ridge of the double-span arch-shaped roof bears heavier snow loads.Under high wind speeds,the uneven distribution of snow accumulation between the front and rear spans is observed,with erosion occurring in the front span and deposition occurring in the rear span.Such findings may provide valuable in⁃sights for further research and practical applications in engineering.