铝合金斜交螺栓连接的抗剪承载性能

Shear Capacity of Aluminum Alloy Connection with Diagonally Arranged Bolts

摘要:

完成了5个铝合金板斜交螺栓连接抗剪承载力试验，证实了螺栓内力分配存在不均匀现象；通过参数化数值分析，研究了斜交角度、螺栓间距、材料特性等参数对螺栓内力分配的影响规律。研究结果表明，最危险位置螺栓分担的剪力可达平均剪力的180%。在试验结果和数值分析结果的基础上，拟合得到了铝合金斜交螺栓连接的螺栓最大内力分配系数计算式。

Abstract:

Five shear bearing capacity tests on aluminum alloy connections with diagonally arranged bolts were conducted， confirming the uneven distribution of internal forces among bolts. The influence of parameters such as diagonal angle， bolt spacing， and material properties on the internal force distribution of bolts was studied through parameterized numerical analysis. The research results indicate that the shear force shared by the most unfavorable bolts can reach 180% of the average shear force. Based on the experimental results and numerical analysis， the formula for calculating the maximum internal force distribution coefficient of bolts was obtained through fitting.