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RESEARCH ON THE WIND-LOAD SHAPE COEFFICIENT OF THE CRESCENT-SHAPED ROOF
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摘要: 基于ANSYS Fluent软件平台采用SST k-ω湍流模型对月牙形悬挑屋面风荷载分布规律进行了数值模拟分析。为验证数值模拟的可靠性，将模拟结果与类似风洞试验结果进行对比分析，结果表明数值模拟可靠性较高。通过建立多个模型，研究通风率、屋面倾角、最大悬挑长度、风向角等因素对屋面体型系数的影响，得出月牙形悬挑屋面的风荷载分布规律。提出了月牙形屋面的风荷载体型系数的取值建议。Abstract: Based on ANSYS Fluent software platform,the SST k-w turbulence model was used to calculate and analyze the wind-load shape coefficient of the crescent-shaped cantilevered roof. In order to verify the reliability of numerical simulation, the simulation results were compared with the results of similar wind tunnel tests. The results showed that the numerical simulation had high reliability. Many models were established to research the influences of the ventilation rate, the roof inclination, the maximum cantilever length and the wind angle on the wind-load shape coefficient of the roof. The regularities of wind load distribution on the crescent-shaped cantilevered roof were obtained. The wind load shape coefficient of the crescent-shaped cantilevered roof was proposed.
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