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通过对复合材料泡桐木芯材夹层板单列螺栓连接抗拉性能的试验研究,考察夹层板连接处不同螺栓直径、螺栓个数、螺栓衬套对连接节点的破坏模式、荷载-位移关系和抗拉承载力的影响,对连接节点处的破坏机制进行分析。试验研究表明:螺栓个数、螺栓直径对节点极限承载力有着不同程度的影响;使用螺栓衬套有效提高了连接节点的抗拉性能;极限承载力与挤压面积呈线性比例关系。
Through the experimental research on the tensile properties of single-row bolted joints of paulownia wood core sandwich panels, the different bolt diameters, the number of bolts, the failure modes of bolted joints on the joints, the load-displacement relationship and the tensile strength Bearing capacity of the connection node at the destruction of the mechanism analysis. The experimental results show that the number of bolts and bolt diameter have different influences on the ultimate bearing capacity of joints. The bolt bushing effectively improves the tensile properties of joints, and the ultimate bearing capacity has a linear relationship with the extrusion area.