江浙地区抬梁和穿斗木构体系典型榫卯节点受力性能
发布时间：2018-09-05 20:41
【摘要】：针对江浙地区抬梁和穿斗木构体系中馒头榫、透榫、半榫及瓜柱柱脚直榫4种典型榫卯节点,通过试验研究其在低周反复荷载作用下的破坏模式、滞回曲线、骨架曲线、转角刚度、延性系数及耗能能力.结果表明:馒头榫、透榫、半榫节点的滞回曲线均呈Z形,具有明显的捏拢特性,而瓜柱柱脚直榫节点的滞回曲线呈反S形,较不饱满;这4种榫卯试件均经历了弹性阶段、屈服阶段和破坏阶段,耗能能力随着节点转角的增加而减小;在节点耗能能力上,按从优到劣排序分别为半榫、馒头榫、透榫、瓜柱柱脚直榫.研究结果可为抬梁和穿斗木构建筑的计算分析及保护修缮提供理论基础.
[Abstract]:Aiming at the four typical tenon joints in the beam-lifting system of Jiangsu and Zhejiang provinces and in the wooden structure system of bucket, such as tenon, half tenon and straight tenon, the failure mode, hysteretic curve and skeleton curve of the joint under low cyclic loading are studied through experiments. Angular stiffness, ductility coefficient and energy dissipation capacity. The results show that the hysteretic curves of tenon, tenon and half tenon of steamed bread are all Z-shaped and have obvious pinch characteristics, while the hysteretic curves of straight tenon joints at the foot of column are reverse S shape, which are not full, and all of the four mortise joints have gone through the elastic stage. In the yield stage and the failure stage, the energy dissipation capacity decreases with the increase of the node angle, and the order of the energy dissipation capacity of the joint is half tenon, steamed bread tenon, tenon and straight tenon at the foot of the column respectively. The results can provide a theoretical basis for the calculation, analysis, protection and repair of the lifting beam and the wooden structure through the bucket.
【作者单位】： 东南大学建筑学院;东南大学城市与建筑遗产保护教育部重点实验室;南京航空航天大学土木工程系;
【基金】：国家自然科学基金资助项目(51138002) 中央高校基本科研业务费专项资金资助项目(2242013R30001)
【分类号】：TU366.2
[Abstract]:Aiming at the four typical tenon joints in the beam-lifting system of Jiangsu and Zhejiang provinces and in the wooden structure system of bucket, such as tenon, half tenon and straight tenon, the failure mode, hysteretic curve and skeleton curve of the joint under low cyclic loading are studied through experiments. Angular stiffness, ductility coefficient and energy dissipation capacity. The results show that the hysteretic curves of tenon, tenon and half tenon of steamed bread are all Z-shaped and have obvious pinch characteristics, while the hysteretic curves of straight tenon joints at the foot of column are reverse S shape, which are not full, and all of the four mortise joints have gone through the elastic stage. In the yield stage and the failure stage, the energy dissipation capacity decreases with the increase of the node angle, and the order of the energy dissipation capacity of the joint is half tenon, steamed bread tenon, tenon and straight tenon at the foot of the column respectively. The results can provide a theoretical basis for the calculation, analysis, protection and repair of the lifting beam and the wooden structure through the bucket.
【作者单位】： 东南大学建筑学院;东南大学城市与建筑遗产保护教育部重点实验室;南京航空航天大学土木工程系;
【基金】：国家自然科学基金资助项目(51138002) 中央高校基本科研业务费专项资金资助项目(2242013R30001)
【分类号】：TU366.2
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