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架空钢结构连廊风荷载体型系数数值模拟研究 被引量:5

Numerical Simulation of Shape Coefficients of Wind Loads on Steel Gallery
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摘要 使用数值模拟方法对某市民服务中心工程架空钢结构连廊的风荷载体型系数在0°、30°、45°和60°风向角下连廊迎风墙面、背风墙面、上表面和下表面的体型系数进行了研究。结果表明:(1)在0°、30°、45°、60°风向角下,对于连廊的迎风墙面,风压以正压为主,而在背风墙面、上表面和下表面,风压均全部表现为负压。(2)连廊迎风墙面、背风墙面、上表面和下表面风压均随着风向角的增大而减小,最不利工况均出现在0°风向角时。根据数值模拟结果对连廊的背风墙面、上表面和下表面分区域给出了体型系数建议值,工程设计中可参考采用。 Numerical simulation was adopted to study shape coefficients of wind loads on steel gallery. Researches of shape coefficients on the steel gallery were made under different wind attack angles 0°、30°、45°、 60°. The results showed that 1 with different wind attack angles the wind pressure is positive on the windward side of steel gallery however on the leeside top surface and bottom surface the wind pressure is negative 2 the wind pressure on the windward side leeside top surface and bottom surface decreases with the increase of wind attack angles the most unfavorable condition appears when the wind attack angle is zero. This paper gave some valuable suggestion based on the numerical results which would be used for similar projects.
作者 郑建建 Zheng Jianjian(Shanghai Municipal Engineering Design Institute Group Co. Ltd.,200092,China;Shanghai Water Design &Engineering Co. Ltd.,200092,China)
出处 《特种结构》 2019年第5期9-14,共6页 Special Structures
关键词 连廊 风荷载 体型系数 数值模拟 Gallery wind load Shape coefficient Numerical simulation
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