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正多边形的加劲壳结构被广泛应用于大型气柜柜体的设计中。为了提供柜体在贮气压力作用下的实用的设计公式,通过引入恰当的假定,将壳体展开面上的截面参数集中到结构轴线上,形成四个结构系,可分别按照合理的薄壁杆理论推演它们的变形和内力公式。该文引入卡曼理论,将有效宽度范围内的壁板和立柱组成宽翼缘竖杆,以弹性地基梁理论为依据,推导出竖杆的变形和内力公式。所得公式值与有限元ABAQUS计算值吻合较好。该文所应用的理论、计算模型和所推导的公式可为柜体设计和相关规程的制定提供参考。
The positive polygon stiffened shell structure is widely used in the design of large gas cabinet cabinet. In order to provide a practical design formula of the cabinet under the pressure of gas storage, through the introduction of proper assumptions, the cross-section parameters on the unfolded surface of the housing are concentrated on the structural axis to form four structural systems, Rod theory deduces their deformation and internal force formula. In this paper, Kaman theory is introduced to form a wide flange vertical bar with wall panels and columns in the effective width range. Based on the elastic foundation beam theory, the deformation and internal force formula of the vertical bar are deduced. The calculated value is in good agreement with the calculated value of ABAQUS. The theory, calculation model and deduced formula applied in this paper can provide reference for the design of cabinet and the establishment of relevant rules.