论文部分内容阅读
为了更好地保护古建筑,采用试验方法研究了CFRP加固古建筑榫卯节点后的抗震性能.基于某古建筑实际尺寸,制作了1∶8缩尺比例的木结构空间框架模型,并考虑梁柱连接为燕尾榫形式.进行了低周反复加载试验,包括3组未加固构架试验和2组CFRP加固试验.基于试验相关数据,获得了节点的弯矩-转角滞回曲线和骨架曲线,并对比分析了节点加固前后的耗能能力、刚度退化和延性等抗震指标.结果表明:CFRP加固榫卯节点后,节点拔榫量减小,抗弯承载力及耗能能力均有所提高,刚度退化不明显,且加固后的节点仍有良好的延性性能.因此,CFRP加固古建筑榫卯节点具有良好的效果.
In order to better protect the ancient buildings, the seismic behavior of CFRP reinforced tenon-dado joints of ancient buildings was studied by means of experimental methods.Based on the actual size of an ancient building, a 1:8 scale-scale wooden structure space frame model was made, The column connection is a dovetail tenon, and the low-cycle cyclic loading test is carried out, including three unbonded frame tests and two CFRP reinforcement tests. Based on the experimental data, the moment-angle hysteresis curves and the skeleton curves of the joints are obtained The comparison of the seismic performance before and after the node reinforcement with energy dissipation, stiffness degradation and ductility shows that the tenoning tenon decreases with the increase of CFRP strength, and the flexural capacity and energy dissipation capacity increase. The stiffness The degradation is not obvious, and the strengthened node still has good ductility performance. Therefore, CFRP reinforcement ancient tenon joints with good results.