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本文讨论构件剪切变形的截面剪应力不均匀分布影响系数μ的计算公式,截面形式包括高层建筑剪力墙和一些结构中常用的对称和不对称的工形和十形,以及T形。提出便于应用的公式,并列出了相应的计算表以便直接查用。 文中对对称工形截面的常用近似公式μ≈A/A_ω进行了讨论,分析了A_ω的不同算法、误差情况和适用范围,并提出了一个新的更为准确的近似公式。此外,还分析讨论了截面形状和尺寸参数对μ值产生影响的某些基本规律。
This paper discusses the calculation formula for the coefficient μ of the inhomogeneous distribution of shear stress in the shear deformation of members, which includes the symmetry and asymmetry of the I-shape and the ten-shape, and the T-shape of the high-rise building shear wall and some structures. Propose formulas that are easy to apply and list the corresponding calculation tables for direct use. In this paper, the commonly used approximate formula μ对称A/A_ω of symmetrical section is discussed. The different algorithms, error conditions and applicable scope of A_ω are analyzed, and a new and more accurate approximate formula is proposed. In addition, some basic rules that influence the influence of section shape and size parameters on the μ value are also analyzed and discussed.