陈琳琳, 崔会敏, 郑云飞, 刘庆宽. 大跨柱面网壳结构风荷载试验研究[J]. 工程力学, 2019, 36(S1): 189-193. DOI: 10.6052/j.issn.1000-4750.2018.05.S038
引用本文: 陈琳琳, 崔会敏, 郑云飞, 刘庆宽. 大跨柱面网壳结构风荷载试验研究[J]. 工程力学, 2019, 36(S1): 189-193. DOI: 10.6052/j.issn.1000-4750.2018.05.S038
CHEN Lin-lin, CUI Hui-min, ZHENG Yun-fei, LIU Qing-kuan. EXPERIMENTAL INVESTIGATION OF WIND LOAD ON LARGE-SPAN CYLINDRICAL LATTICED SHELL[J]. Engineering Mechanics, 2019, 36(S1): 189-193. DOI: 10.6052/j.issn.1000-4750.2018.05.S038
Citation: CHEN Lin-lin, CUI Hui-min, ZHENG Yun-fei, LIU Qing-kuan. EXPERIMENTAL INVESTIGATION OF WIND LOAD ON LARGE-SPAN CYLINDRICAL LATTICED SHELL[J]. Engineering Mechanics, 2019, 36(S1): 189-193. DOI: 10.6052/j.issn.1000-4750.2018.05.S038

大跨柱面网壳结构风荷载试验研究

EXPERIMENTAL INVESTIGATION OF WIND LOAD ON LARGE-SPAN CYLINDRICAL LATTICED SHELL

  • 摘要: 干煤棚结构一般采用轻质屋面体系,是一种典型的风敏感结构,因此风荷载是结构设计中不可忽视的问题。该文以某热电厂大跨度柱面网壳煤棚工程项目为背景,为了获得准确的用于结构设计的风荷载数据,进行了刚性模型测压风洞试验,考虑了风向角、煤堆以及周边建筑的气动干扰等因素对煤棚体型系数的影响。结果表明:来流风作用在端部山墙上呈90°~120°夹角时,测点的体型系数较大。在90°来流风时,半封闭端部山墙对结构是非常不利的,来流对煤棚顶部会有更大的风荷载。根据研究发现,模型的顶部体型系数相对较大,在建设煤棚时应对其顶部进行加固。

     

    Abstract: Light-quality roof is usually adopted in the structure of a dry coal shed, which is a typical wind sensitive structure. The wind load is a problem that cannot be ignored. In order to obtain accurate wind load data for the structural design, the pressure measurements of a wind tunnel test on a rigid structural model have been carried out based on a thermal power plant coal shed project with a large span cylindrical reticulated shell. The aerodynamic influence of wind angle and surrounding buildings on the coal shed shape coefficient is investigated. The results show that the shape coefficient value at measure points is larger when the intersection angle between the wind and the mountain wall is 90°~120°. A larger wind load acts on the semi-closed gable end of the structure when the intersection angle is 90°, and the coal roof will have greater wind loading. According to the research, the shape coefficient is relatively large at the top of a coal model, the roof structure of the coal shed should be strengthened.

     

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