多类型双坡屋面风致干扰数值模拟分析

Numerical Simulation Analysis of Multi-types Wind Disturbance on Gabled Roof of Low-rise Building

应用自行开发的建筑风场数值模拟程序WSB,对受扰的低层双坡屋面建筑与相邻不同体型建筑间的风致干扰进行一系列的数值模拟和分析。结果表明:在多类体型建筑的风致干扰下,低层双坡屋面建筑的坡面风压分布形态和变化趋势有明显的规律,与单体建筑的情况相比较,迎风坡面靠近檐口处或背风坡面靠近屋脊处的风压变化最大;施扰建筑体型的不同引起坡面风压的显著差异,靠近檐口处或屋脊处的风压差值最大;以上结论在沿海地区的抗台风中应予以重视。

A series of disturbed wind pressure simulation on low-rise building with gabled roof was obtained by an inhouse computer program, named Wind Simulation of Buildings （WSB）. Analysis of the numerical results indicated that the wind pressure distribution and variation tendency on the gabled roof of disturbed low-rise building had obvious rule under multi-types wind disturbance, the different disturbing building shape had significant effects on the roof pressures of the disturbed building , specially at the area near the roof ridge or near the windward-side eave. The above-mentioned conclusions should be paid attention to in resisting the typhoon of the coastal area.