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在分析弧形闸门主框架主横梁与支臂单位刚度比的基础上 ,运用结构优化设计理论 ,分别对规范推荐的π形、斜支臂及门形三种门型的主框架进行优化设计 ,并对各门型的单位刚度比常用取值范围随闸门宽度与面板曲率半径之比值、宽高比、横梁截面高度与支臂截面高度之比值三者间的变化规律进行分析 .结果表明 :三种门型主框架单位刚度比的常用取值范围为 :潜孔式π形主框架为 6～ 12 ;露顶式π形框架为 3～ 9;斜支臂框架为 3～ 7;闸形框架为 2～ 12 .弧形闸门跨度与面板曲率半径之比或跨高比较大时 ,单位刚度比取小值 ;反之取大值 .
Based on the analysis of unit rigidity ratio of the main beam and the arm of the main main frame of the radial gate, the main frame of the three types of π-shaped, oblique-arm and gantry-type doors recommended by the standard is optimized by the structural optimization design theory, And the change rule of the ratios of the door rigidity and the ratio of the gate width to the curvature radius of the panel, aspect ratio, the cross-section height of the cross-beam and the cross-section height of the arm is analyzed.The results show that: The common range of rigidity ratio of the door type main frame is: 6 to 12 for the down-hole π-shaped main frame, 3 to 9 for the open top π-shaped frame, and 3 to 7 for the skew-supported arm frame; For 2 ~ 12. Radial gate span and panel radius of curvature of the ratio or span a high ratio, the unit stiffness ratio to take a small value; the other way to take a large value.