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以钢筋混凝土矩形梁抗剪承载力计算公式为研究基础,考虑钢筋混凝土T梁受压区的宽度,定义了一个翼缘有效宽度,推导出考虑翼缘有效宽度的钢筋混凝土T梁的抗剪承载力计算公式.收集整理了1根钢筋混凝土矩形梁和61根钢筋混凝土T梁的抗剪试验数据,比较了国内外不同规范和推导公式的抗剪承载力计算结果,发现规范公式对T梁的抗剪承载力计算是偏于安全的,且推导公式计算值与试验数据吻合较好.研究结果表明:考虑钢筋混凝土T梁的翼缘宽度可明显提高抗剪承载力,推导的公式更具合理性.
Taking the calculation formula of shear strength of reinforced concrete rectangular beam as the research foundation and considering the width of the compression region of T-beam, the effective width of one flange is defined and the shear strength of reinforced concrete T-beam considering the effective width of the flange is deduced Force calculation formula, the shear test data of one reinforced concrete rectangular beam and 61 reinforced concrete T beams are collected and compared with the calculated results of different specifications and deduction formulas at home and abroad, and the results show that the normalized formulas of T The calculation of shear strength is biased to safety, and the calculated values are in good agreement with the experimental data.The results show that considering the width of the flange of the T-beam, the shear capacity can be obviously improved and the formula is more reasonable .