在建立合理假定的基础上,本文结合了完全刚性连结和自由叠合两种极端情况下的弯曲正应力计算方法,制作了钢——铝两种材料用螺栓连结的双层组合梁进行了试验验证,通过不加螺栓(自由叠合)、加一对螺栓、两对螺栓、三对螺栓、四对螺栓的对比试验,发现连接件的数量对应力影响明显,随着所加螺栓数量的增加,应力分布规律愈趋近于刚性连接计算结果。 Based on the establishment of reasonable assumptions, this paper combines the calculation methods of the bending normal stress under the two extreme conditions of completely rigid connection and free overlapping, and has produced a steel-aluminum two kinds of materials tested with bolted double-layer composite beams. Verification, through comparison tests without bolts (free stacking), adding a pair of bolts, two pairs of bolts, three pairs of bolts, and four pairs of bolts, it was found that the number of connectors has a significant effect on the stress, with the increase in the number of bolts added The stress distribution law is getting closer to the result of the rigid connection.