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本文叙述了九根配有各种腹筋的钢筋混凝土足尺大梁的试验。研究了梁中垂直箍筋、斜箍筋、弯筋和水平腹筋在抗剪承载能力和限制斜裂缝开展宽度方面的作用、效果以及最适宜的抗剪配筋形式。提出了限制弯筋所能承担的剪力的建议公式。此外,结合滑模施工探讨了滑模大梁的横向配筋形式和弯起钢筋上弯点降低的问题等。
This article describes nine tests of reinforced concrete full-scale girders with various web reinforcements. The effects of vertical stirrups, diagonal stirrups, bent ribs, and horizontal webbing on the shear capacity and the width of oblique cracks were studied, and the most suitable form of shear reinforcement was studied. Suggested formulae that limit the shear forces that can be afforded by curved bars are proposed. In addition, combined with the sliding mode construction, the lateral reinforcement pattern of the sliding mode girder and the problem of lowering the bending point of the curved steel bar are discussed.