CAJ | 학술논문

对我国沿海地区常见低层双坡房屋模型进行风洞试验,获得屋面平均风压分布;同时对相同形状的实际建筑采用数值模拟方法计算了屋面的风压分布.结果表明数值模拟和风洞试验结果在整体趋势上吻合较好.这表明数值模拟方法可以和风洞试验相结合,为低层房屋的抗风设计提供参考依据.结果还表明,该类房屋的屋檐、屋脊和山墙顶边等房屋外表面拐角区域有高负压、高负压梯度出现,特别是迎风向挑檐部分的上下表面的净风压会较大,因此会对挑檐产生较大的升力,这在沿海多台风地区的低层房屋设计时应特别注意.
대아국연해지구상견저층쌍파방옥모형진행풍동시험,획득옥면평균풍압분포;동시대상동형상적실제건축채용수치모의방법계산료옥면적풍압분포.결과표명수치모의화풍동시험결과재정체추세상문합교호.저표명수치모의방법가이화풍동시험상결합,위저층방옥적항풍설계제공삼고의거.결과환표명,해류방옥적옥첨、옥척화산장정변등방옥외표면괴각구역유고부압、고부압제도출현,특별시영풍향도첨부분적상하표면적정풍압회교대,인차회대도첨산생교대적승력,저재연해다태풍지구적저층방옥설계시응특별주의.
The wind tunnel test and numerical stimulation of a typical low-rise gable roofed building with eave were performed to obtain mean wind pressure distributions acting on the building roof. In general, the results obtained from the test and the simulation match well. This indicates that the numerical simulation ap-proach may be a power tool for wind-resistant study on low-rise buildings. Furthermore, the results show that high minus wind pressure and pressure gradient can be appear at turning corners,such as eaves, ridge of roof and top of gable, etc. Especially the upward wind force on overhang eaves could be large, which should be paid attention to in designing of such buildings.