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蜂窝梁作为一种新型钢构件,由于其截面形式合理、自重轻、承载能力高、美观经济等优点,常被应用于大跨结构中.但是我国并没有制定相关的规范或标准来指导应用设计,这严重制约了蜂窝梁在我国的广泛应用.对正八边形孔蜂窝梁的挠度计算进行研究,提出了确定蜂窝梁等效抗弯刚度和等效抗剪刚度的方法和理论公式.该方法依据纯弯与纯剪有限元分析结果,按照材料力学中计算公式反算刚度,具有简捷、准确、经济、高效等优点,通过大量有限元分析,得到了腹板刚度折减系数,进一步给出了半理论半经验的计算公式.
As a new type of steel component, honeycomb beams are often used in long-span structures because of their reasonable cross-sectional form, light weight, high carrying capacity and beautiful economy, etc. However, China has not developed any relevant norms or standards to guide the application design , Which severely restricts the wide application of honeycomb beams in our country.Based on the calculation of the deflection of a regular octagonal hole honeycomb beam and the method and the theoretical formula for determining the equivalent bending stiffness and the equivalent shear stiffness of the honeycomb beam, According to the results of pure bending and pure shear finite element analysis, according to the calculation formula of material mechanics, the rigidity is calculated, which has the advantages of simplicity, accuracy, economy and efficiency. The stiffness reduction coefficient of webs is obtained by a large number of finite element analysis Semi-theoretical semi-empirical formula.