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首页> 外文期刊>Dam Engineering >Distribution of stresses due to hydraulic loading in the skin plate of a vertical lift gate: cylindrical shell type and flat type (Part I)
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Distribution of stresses due to hydraulic loading in the skin plate of a vertical lift gate: cylindrical shell type and flat type (Part I)

机译：立式提升门的蒙皮板中由于液压载荷而产生的应力分布：圆柱壳型和扁平型（第一部分）

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摘要

Vertical lift gates with a flat skin plate are generally installed in hydraulic structures. In this paper new geometry of the cylindrical shell type skin plate of a vertical lift gate is proposed in order to obtain a more economic design. The stress distribution in a vertical lift gate with a flat skin plate is compared with that of a cylindrical shell skin plate with a varying sag-to-span ratio. Considering the effect of a skin plate, a horizontal girder, and a vertical stiffener separately, analysis of a vertical gate with both a flat and cylindrical skin plate is carried out based on the Finite Element Method (FEM). It is observed that for the same hydrostatic load, maximum span stress is less in a cylindrical skin plate than in a flat skin plate. It also observes that maximum span stress decreases with the increase of sag-to-span ratio, but the rate of change of decrement is insignificant after a certain value of sag-to-span ratio of the gate. Maximum stress in the skin plate at the support is higher than the maximum span stress. It also increases with the increase of sag-to-span ratio.
机译：具有平坦蒙皮板的垂直提升门通常安装在液压结构中。为了获得更经济的设计，本文提出了一种新型的立式提升门的圆柱壳型蒙皮板的几何形状。比较了具有平坦蒙皮板的垂直提升门中的应力分布与具有不同下垂比的圆柱壳蒙皮板的应力分布。分别考虑蒙皮板，水平大梁和竖向加劲肋的影响，基于有限元方法（FEM）对具有平板蒙皮和圆柱形蒙皮板的垂直门进行了分析。可以看出，对于相同的静水载荷，圆柱形蒙皮板的最大跨度应力小于平坦蒙皮板的最大跨度应力。还可以观察到，最大跨度应力随流延比的增加而减小，但是在门的流垂比一定值之后，减小的变化率是不明显的。支撑板上的蒙皮板中的最大应力高于最大跨度应力。它也随流挂比的增加而增加。

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