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给出了单剪螺栓连接的冷弯薄壁板的试验、数值和分析研究结果。共进行了18组试验,给出了的荷载-变形曲线和荷载-应变曲线的详细数据,以验证有限元模型。被证实了的有限元模型可进行全面的参数研究,用于得出不同的设计参数对连接板性能的影响,这些设计参数包括初始刚度、极限承载力和极限状态下的变形。结果表明,采用现行方法可以准确地预测板的刚度和极限承载力。然后,分析研究集中在得出一个计算极限状态下板最大的变形(孔洞的变形率)的方法。基于参数研究的结果,提出了不同的连接破坏模式下极限变形的计算方法。
The test, numerical and analytical results of the cold-formed thin-walled panels with single-bolted connections are given. A total of 18 experiments were conducted and detailed data of load-deformation curves and load-strain curves were given to validate the finite element model. Proven finite element models allow for comprehensive parametric studies to determine the effect of different design parameters on the performance of the web including initial stiffness, ultimate bearing capacity and ultimate deformation. The results show that the current method can accurately predict the plate stiffness and ultimate bearing capacity. The analysis then focuses on deriving a method of calculating the maximum deformation of the plate (deformation rate of the holes) under the limit state. Based on the results of parametric study, the calculation method of limit deformation under different connection failure modes is proposed.