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提出了一种新的楼盖结构形式——蜂窝形钢空腹夹层板结构,并介绍了结构的几何构型特点。为了研究该种结构的自振频率,基于通用有限元分析软件ANSYS建立了结构分析有限元模型,采用子空间迭代法计算结构各阶频率和振型。考虑高跨比、表层板厚度、上下肋刚度、长宽比和剪力键厚度对结构动力特性的影响,对结构进行了参数化分析,并拟合基频的计算公式。结果表明,蜂窝形钢空腹夹层板具有类似于实心平板结构的振动特性。根据对比分析得知,上述各因素中表层板厚度、上下肋刚度、高跨比和长宽比能显著改变空腹夹层板的基频,剪力键厚度对基频影响较小。
Proposed a new form of floor structure - honeycomb-shaped steel sandwich plate structure, and introduced the geometry of the structure characteristics. In order to study the natural frequency of this kind of structure, a finite element model of structural analysis was established based on the general finite element analysis software ANSYS. The sub-spatial iteration method was used to calculate the frequencies and modes of the structure. Considering the effect of high span ratio, thickness of top plate, stiffness of upper and lower ribs, aspect ratio and shear bond thickness on the dynamic characteristics of the structure, parametric analysis of the structure was made and the calculation formula of the fundamental frequency was fitted. The results show that the honeycomb steel webs have the vibration characteristics similar to the solid slab structure. According to the comparative analysis, among the above factors, the thickness of the top panel, the rigidity of the upper and lower ribs, the high span ratio and the aspect ratio can significantly change the fundamental frequency of the fasting sandwich panel, and the shear bond thickness has little effect on the fundamental frequency.