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本文通过六根T形截面开孔梁的剪切破坏试验,主要研究在梁剪跨区腹部开横向圆孔洞对梁抗剪性能的影响。试验的主要参数有:孔洞直径的大小、孔洞之间的相互距离,孔洞的位置等。文中根据试验结果,分析讨论了孔洞对梁斜裂缝形成和发展的影响,对承载能力的影响。通过对试验数据的分析处理,把钢筋砼实腹梁的强度计算公式予以修正,使之适用于T形开圆孔梁的计算。
In this paper, through the shear failure test of six T-section open beam beams, the influence of the transverse circular holes on the shear resistance of the beam in the cross-section of the beam shear region is studied. The main parameters of the test are: the size of the hole diameter, the distance between the holes, and the position of the hole. Based on the experimental results, this paper analyzes and discusses the effect of holes on the formation and development of oblique cracks in beams, and the influence on bearing capacity. Through the analysis and processing of the test data, the strength calculation formula of the reinforced truss web beam was modified to make it applicable to the calculation of T-shaped open circular beam.