[1]陈春超,邱洪兴,包轶楠,等.不对称榫卯节点正反向受弯性能试验研究[J].东南大学学报(自然科学版),2014,44(6):1224-1229.[doi:10.3969/j.issn.1001-0505.2014.06.023]
 Chen Chunchao,Qiu Hongxing,Bao Yinan,et al.Experimental study on positive and reverse flexural behavior of asymmetric mortise-tenon joints[J].Journal of Southeast University (Natural Science Edition),2014,44(6):1224-1229.[doi:10.3969/j.issn.1001-0505.2014.06.023]
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不对称榫卯节点正反向受弯性能试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
44
期数:
2014年第6期
页码:
1224-1229
栏目:
土木工程
出版日期:
2014-11-20

文章信息/Info

Title:
Experimental study on positive and reverse flexural behavior of asymmetric mortise-tenon joints
作者:
陈春超邱洪兴包轶楠郝晓航
东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Chen Chunchao Qiu Hongxing Bao Yinan Hao Xiaohang
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
榫卯节点 弯矩-转角关系 破坏形态 受弯性能
Keywords:
mortise-tenon joint moment-rotation relationship failure mode flexural behavior
分类号:
TU366.2
DOI:
10.3969/j.issn.1001-0505.2014.06.023
摘要:
对透榫、半榫、十字箍头榫3种不对称榫卯节点的正反向受弯性能进行了单调加载试验,获得了节点的弯矩-转角、拔榫量-转角关系曲线以及节点的破坏形态.结果表明:透榫和十字箍头榫正反向受弯破坏形态分别为榫头变截面处顺纹撕裂继而榫根折断和榫根附近处受弯破坏,而半榫正反向受弯破坏形态均为脱榫破坏.透榫和半榫节点正向受弯承载力和破坏时的极限转角比反向受弯小很多;十字箍头榫节点正反向受弯承载力比较接近,但正向受弯破坏时的极限转角比反向受弯大很多.3种榫卯节点的拔榫量和转角均具有很好的线性关系.此外,榫头上侧缝隙对榫卯节点的受弯性能有着重大影响.
Abstract:
The positive and reverse flexural behavior of Tou mortise-tenon joints(TJ), Ban mortise-tenon joints(BJ)and Shizigutou mortise-tenon joints(SJ)are studied by monotonic loading tests. The relationship of moment-rotation, length of the tenons pulled out-rotation and failure modes are obtained through the tests. Research results show that the positive failure mode of TJ and SJ is tearing along the grain in the variable cross section and then breaking, the reverse failure mode of which is bending damage near the roof of tenons. The positive and reverse failure modes of BJ are both pulling out. The positive flexural capacity and extreme rotation of TJ and BJ are much smaller than the reverse ones. The positive and reverse flexural capacities of SJ are similar, but the positive extreme rotation is much bigger than the reverse one. The pulling size of three kinds of tenons has a linear relationship with the rotation. In addition, the upper gaps of tenons play an important influence on flexural behavior.

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备注/Memo

备注/Memo:
收稿日期: 2014-06-06.
作者简介: 陈春超(1988—),男,博士生;邱洪兴(联系人),男,博士,教授,博士生导师,qiuhx@seu.edu.cn.
基金项目: “十二五”国家科技支撑计划资助项目(2012BAJ14B02).
引用本文: 陈春超,邱洪兴,包轶楠,等.不对称榫卯节点正反向受弯性能试验研究[J].东南大学学报:自然科学版,2014,44(6):1224-1229. [doi:10.3969/j.issn.1001-0505.2014.06.023]
更新日期/Last Update: 2014-11-20