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在工业建筑中,配有垂直箍筋的钢筋混凝土薄腹梁应用较广,但常会遇到两个问题:一是按现行规范(TJ 10-74)设计,梁的腹板仍较厚;二是斜裂缝开展较大,影响构件的正常使用。为此,作者进行了18根Ⅰ形薄腹梁的抗剪性能试验研究,通过试验证明:梁腹配有斜箍筋既能推迟斜裂缝的出现和开展,减小剪切变形对挠度的影响,又可大大地提高梁的抗剪上限。本文就斜箍筋梁和垂直箍筋梁的抗剪性能作一对比分
In industrial buildings, reinforced concrete thin-web girders with vertical stirrups are widely used, but they often encounter two problems: First, according to the current specification (TJ 10-74), the webs of the beams are still thick; It is the oblique cracks that carry out large, affect the normal use of the components. To this end, the author conducted a study of the shear behavior of 18 I-shaped thin webs. Through experiments, it was proved that the use of diagonal stirrups in the girth can delay the occurrence and development of oblique cracks, and reduce the influence of shear deformation on the deflection. , but also can greatly improve the beam’s shear upper limit. This article makes a score for the shear resistance of the diagonal stirrup beam and the vertical stirrup beam