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通过玄武岩纤维增强复合材料(BFRP)加固圆形截面木结构榫卯节点的水平低周反复荷载试验,对加固后榫卯节点的抗震性能进行了研究,主要包括滞回曲线、骨架曲线、强度和刚度退化规律、变形等。试验结果表明,BFRP加固榫卯节点的滞回曲线和未加固榫卯节点的滞回曲线图形明显不同,BFRP加固能够有效提高榫卯节点的承载力和刚度。根据榫卯节点刚度和极限承载力提高的比例,提出了BFRP加固榫卯节点的加固设计经验公式。
The seismic performance of tenon-mortise tenon joints was studied by horizontal low-cycle cyclic loading test of circular-section wood tenon-mortise joints reinforced with basalt fiber reinforced composites (BFRP), including hysteresis curve, skeleton curve, strength and Stiffness degradation rules, deformation and so on. The experimental results show that the hysteretic curves of the tenon joints are obviously different from those of the unbonded tenon joints. BFRP reinforcement can effectively increase the bearing capacity and stiffness of tenon joints. According to the ratio of tenon and tenon joint stiffness and ultimate bearing capacity increase, empirical formula of strengthening design of tenon and mortise joints reinforced with BFRP was proposed.