论文部分内容阅读
在分析高层和高耸建筑结构的内力和位移时,需要考虑剪切变形的影响。最有效而简便的方法是将弯曲刚度乘以小于1的系数。这就要应用截面剪应力分布不均匀系数μ值。但现有的文献资料只给了矩形、圆形的μ值和工字形的μ值的近似计算式。这些远满足不了当前的需要。本文以工形截面为例,导出了μ的计算公式,并给出了常用的九种截面的μ算式。此外笔者在推导过程中,还发现我国以往的结构力学教科书中给出的圆形截面μ值32/27应是10/9。
When analyzing the internal forces and displacements of high-rise and high-rise building structures, the influence of shear deformation needs to be considered. The most effective and convenient method is to multiply the bending stiffness by a factor less than one. This is to apply the shear stress distribution non-uniform coefficient μ. However, the existing literature data only gives approximation equations for μ and I values for rectangles and circles. These are far from meeting current needs. In this paper, taking the I-shaped section as an example, the calculation formula of μ is derived, and the commonly used nine-section μ calculations are given. In addition, in the process of derivation, the author also found that the circular section μ value 32/27 given in the previous structural mechanics textbook in China should be 10/9.