斜柱框架抗侧刚度研究

随着社会及工程的进一步发展,斜柱框架目前应用广泛。研究表明改变框架的几何形状,使外柱略微向内倾斜可以增加结构的抗侧移刚度,获得较好的稳定性,从而相应地减少侧向荷载引起的位移和振动。利用结构力学方法,根据实际的工程,建立了单层斜柱框架的一般模型,推导出单层斜柱框架的层抗侧刚度的简化计算公式并且与ANSYS有限元结果进行了比较,探索斜柱框架抗侧刚度与倾角的关系以及理论公式的有效范围。

The Analysis of Lateral Stiffness of Tilted Framework

With the development of the society and civil engineering, tilted framework is being wide- ly used. Through the research of the shape of the framework, it is found that tilted framework is more stable than the ordinary framework because the tilted framework increased its lateral stiffness and thus its displacement and librations are decreased. The general model of the single-story tilted frame- work is built on the basis of the mechanical method. The simplified formula is got and the result is compared with that of the FEA tool-ANSYS. On one hand,it is aimed to explore the relationship be- tween lateral stiffness of tilted frame and tiled angle, on the other hand, we can get the scope of ap- plication of the simplified formula.