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薄钢板结构有3种典型类型:非加劲(无边缘加劲板),加劲(有充足边缘的加劲板)和部分加劲(有部分边缘加劲板)。当被用于冷弯薄壁型钢时,在承受均匀压力和应力梯度下,钢板可能发生弹性屈曲,有6种可能的荷载组合条件。除了应力梯度作用下的部分加劲构件,对所有类型的钢板都进行了试验研究并提出了设计公式。阐述了当部分加劲板的加劲单元尺寸从零到足够产生加劲作用时,在应力梯度作用下部分加劲板的试验情况。研究了单一加劲和复合加劲的边缘加劲类型。利用有效宽度概念,提出了部分加劲构件在应力梯度作用下的设计公式。在此基础上提出了适用于所有构件在任意荷载条件下的有效宽度公式。
There are three typical types of sheet steel construction: non-stiffened (edgeless stiffened panels), stiffened (stiffened panels with sufficient edges) and partially stiffened (with stiffened panels). When used to cold-bend thin-walled sections, the plate may buckle elastically under uniform pressure and stress gradients with six possible load combinations. In addition to the part of the stiffener under stress gradient, all kinds of steel plates were studied and the design formulas were proposed. The test of some stiffened plates under stress gradient is described when the stiffener size of some stiffeners is from zero to enough to produce stiffener. Studied the type of edge stiffener with single stiffener and composite stiffener. Using the concept of effective width, the design formula of some stiffeners under stress gradient is proposed. Based on this, an effective width formula suitable for all components under any load condition is proposed.