太原植物园胶合木半搭接节点受力性能试验研究  

STUDY ON STRESS PROPERTY TEST OF SEMI-OVERLAPPED GLUED TIMBER NODE IN TAIYUAN BOTANICAL GARDEN

作　　者：李亚明[1] 李瑞雄[1] 贾水钟[1] 何承洋 李征[2] LI Ya-ming;LI Rui-xiong;JIA Shui-zhong;HE Cheng-yang;LI Zheng(Shanghai Architectural Design and Research Institute Co.,Ltd.,200041,Shanghai,China;Department of Structural Engineering,College of Civil Engineering,Tongji University,200092,Shanghai,China)

机构地区：[1]上海建筑设计研究院有限公司,上海200041 [2]同济大学土木工程学院建筑工程系,上海200092

出　　处：《建筑技术》2020年第3期299-302,共4页Architecture Technology

摘　　要：针对太原植物园大跨度木网壳结构采用的半搭接节点,考虑简支支承和轴向限位2种支座形式,进行4个试件的抗弯试验,得到了节点的荷载–位移曲线,考察节点的破坏模式,对比了节点与无拼接连续梁段的承载力差异,结果表明轴向限位能够提高试件的承载力及转动刚度,且更符合节点实际的受力状态;节点承载力为无拼接连续梁段的42%~59%,具有半刚性特征,应在整体结构中赋予合理的转动刚度。将试验结果与设计结果进行比对,证明了节点在实际结构中的安全性。Considering the simple support bearing and the axial restraint bearing for semi-overlapped node of wide-span latticed timber structure in Taiyuan Botanical Garden, bending test was carried out on four samples to obtain the load-displacement curve of node, and to observe the failure mode of node. The bearing capacity differences between node and non-overlapped continuous beam segment were analyzed. It was found that axial restraint could improve the bearing capacity and rotational stiffness of the sample and it is more suitable to the practical stress condition of node;its node bearing capacity is 42% to 59% of the non-overlapped continuous beam and it has semi-stiffness characteristics, so reasonable rotational stiffness shall be applied in the whole structure. Comparison between the test result and design result proved the safety of node in real structure.

关 键 词：胶合木 半搭接节点 抗弯试验 破坏模式 转动刚度 承载力 

分 类 号：TU366.3[建筑科学—结构工程]