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推导了在竖向力作用下混凝土框架-配筋砌块砌体混合结构的框架与砌体墙的轴力分配系数计算公式,分析并确定了结构在竖向力作用下协同工作的影响因素;通过有限元模拟研究了框梁截面高度、框柱截面高度、墙高等因素对竖向力作用下框架和砌体墙的轴力分配的影响。结果表明:柱截面高度对框架和墙轴力分配系数的影响最大,变化在10%左右;砌体弹性模量次之;梁截面高度和墙高度的影响都较小。与此同时,将模型分析结果与公式计算结果进行了比较,验证了公式的正确性。
The formula for calculating the axial force distribution coefficient between the frame and the masonry wall of the masonry-reinforced concrete masonry composite structure under vertical force is deduced. The influencing factors of the synergistic working of the structure under the vertical force are analyzed and determined. The influence of vertical section force on the axial force distribution of frame and masonry walls was studied by finite element simulation, such as frame section height, column section height and wall height. The results show that the column height has the most significant effect on the distribution coefficient of frame and wall axial force, with a variation of about 10%. The elastic modulus of masonry is second, and the influence of beam height and wall height is small. In the meantime, the results of model analysis and formula calculation are compared to verify the correctness of the formula.