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Torsion Stiffness of Thin-walled Steel Beams with Web Holes

机译：带腹板孔的薄壁钢梁的扭转刚度

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This paper summarizes the pure torsion stiffness examination of the perforated thin-walled steel beams generally used in the storage systems and expedient flooring structures. The circular perforation is being placed in the web of the beam. The experimental verification of the St. Venant torsion parameter is a partial task to determine the ultimate and design strength of the beams with respect to lateral torsional buckling. First the pure torsion parameter is theoretically calculated for the "substitute" cross-section and then the examined beams are subjected to the laboratory investigation. The resulting pure torsion parameters obtained from the test for different beam lengths are approximated by exponential curves and the formula describing the relationship between the pure torsion stiffness and the angle of rotation is being established.
机译：本文总结了通常用于存储系统和方便的地板结构中的带孔薄壁钢梁的纯扭转刚度检查。圆形穿孔被放置在梁的腹板中。 St. Venant扭转参数的实验验证是确定梁相对于横向扭转屈曲的极限强度和设计强度的部分任务。首先，从理论上计算“替代”横截面的纯扭力参数，然后对检查过的光束进行实验室检查。从测试中获得的针对不同光束长度的所得纯扭力参数通过指数曲线近似，并建立了描述纯扭力刚度和旋转角度之间关系的公式。

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