Abstract This paper presents the study on shear behavior of stiffened single perforated LDSS rectangular hollow beam, considering various orientations / patterns viz., inclined (IS), vertical (VS), horizontal (HS) and ring (RS); and effect of various cross-sections i.e. flat, angular and semi-circular (considering same material consumption). Based on the study, it has been found that in general, inclined stiffener (with flat cross-section) is relatively most effective in enhancing the shear capacity of perforated beams. For the inclined stiffeners, it is observed that the rate of increase in shear capacity (Vu/Vy) increases (in a non linear trend) with increasing stiffener length for higher stiffener thicknesses. In the case of vertical and horizontal stiffeners, there appears to have no/little significant improvement in shear capacity for both the variation in length, width and thickness. For the ring stiffeners, it is found that, shear capacity increases with increase in both breadth and thickness of the stiffeners. Comparison made between angular and semi-circular sections (keeping the same cross sectional area) showed that both the sections predicted similar behavior of shear capacity.

中文翻译：

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加筋单孔双相不锈钢（LDSS）矩形空心梁的剪切行为

摘要 本文介绍了加筋单穿孔LDSS矩形空心梁的剪切行为研究，考虑了各种方向/模式，即倾斜（IS）、垂直（VS）、水平（HS）和环形（RS）；以及各种横截面的效果，即平面、角形和半圆形（考虑相同的材料消耗）。根据研究发现，一般而言，倾斜加劲肋（具有平坦横截面）在提高穿孔梁的抗剪能力方面相对最有效。对于倾斜的加劲肋，据观察，对于较高的加劲肋厚度，抗剪承载力 (Vu/Vy) 的增加率随着加劲肋长度的增加而增加（呈非线性趋势）。在垂直和水平加强筋的情况下，对于长度、宽度和厚度的变化，剪切能力似乎没有/几乎没有显着改善。对于环形加强筋，发现抗剪承载力随着加强筋宽度和厚度的增加而增加。角形和半圆形截面（保持相同的横截面积）之间的比较表明，这两个截面预测了相似的抗剪能力行为。