单调与低周反复荷载作用下胶合木梁柱延性抗弯节点试验研究

发布时间：2018-01-11 00:15

本文关键词：单调与低周反复荷载作用下胶合木梁柱延性抗弯节点试验研究　出处：《建筑结构学报》2015年10期 　论文类型：期刊论文

【摘要】：为研究带耗能连接件的混合式植筋胶合木梁柱节点的抗震性能,对9组16个胶合木梁柱植筋节点试件进行单调与低周反复荷载试验研究。对混合式植筋节点的破坏形态、试验现象、受力性能、延性和耗能能力等进行分析,并将其与纯植筋节点进行对比。结果表明:混合式植筋节点与纯植筋节点承载力相差不大,弹性抗侧刚度相对稍低,但刚度退化要比纯植筋节点小;混合式植筋节点位移延性系数达到2.2~5.1,延性性能较好;与纯植筋节点相比,混合式植筋节点滞回环的捏拢效应相对较轻,且其残余变形显著减小,说明带耗能连接件的植筋节点具有较好的耗能能力和变形恢复特性。对比纯植筋节点,引入耗能连接件后,混合式植筋节点受力及抗震性能变化不大,但其承载力与刚度维持在较高水平且可控制。带整体式耗能连接件的J2、J3组试件的耗能能力和变形恢复能力较强,而带分离式耗能连接件J4组试件的耗能能力与变形恢复能力相对差些。
[Abstract]:In order to study the seismic behavior of Liang Zhu joint of hybrid glued wood with energy-dissipation connectors. The monotonic and low cycle repeated loading tests were carried out on 16 groups of 16 glued wood joints with Liang Zhu tendons. The failure patterns, experimental phenomena, mechanical properties, ductility and energy dissipation capacity of hybrid tendon-planting joints were analyzed. The results show that the bearing capacity of the hybrid joint is not different from that of the pure node, and the stiffness of the elastic side is relatively low, but the stiffness degradation is smaller than that of the pure joint. The displacement ductility coefficient of hybrid reinforcement joint reaches 2.2% 5.1, and its ductility is better. Compared with pure reinforced joints, the clamping effect of hysteretic loop of hybrid tendon-planting joints is relatively light, and its residual deformation is significantly reduced. The results show that the joints with energy-dissipation connectors have better energy dissipation capacity and deformation-recovery characteristics. Compared with pure tendons joints, the load and seismic performance of hybrid tendons joints have little change after the introduction of energy-dissipation connectors. However, its bearing capacity and stiffness are maintained at a high level and can be controlled. The energy dissipation capacity and deformation recovery ability of J2N J3 specimens with integral energy dissipation connectors are relatively strong. But the energy dissipation ability and deformation recovery ability of J4 sample with separate energy dissipation connection are relatively poor.
【作者单位】：南京工业大学土木工程学院;东南大学土木工程学院;
【基金】：国家自然科学基金项目(51108233)
【分类号】：TU366.3
【正文快照】： 0引言木结构节点类型主要包括传统榫卯连接、齿连接、胶黏连接、钉连接、销栓连接和齿板连接等,其中销栓节点由于具有加工安装方便、性能可靠、经济性好等优点而得到普遍应用。然而,随着现代工程木结构的发展,对节点性能和抗震性能的要求越来越高,传统的销栓节点形式虽然延性

【参考文献】