摘要
为弥补传统板式节点的不足,引入花环齿槽体,构造出一种新型铝合金花环齿槽型组合(FGC)节点.对FGC节点开展平面内抗压性能试验研究,对平面外的抗弯性能进行弹塑性有限元分析,并推导出FGC节点在轴力和弯矩共同作用下的承载力计算公式.结果表明,由于花环齿槽体可有效传递铝合金梁腹板的内力,新型FGC节点的抗压强度和刚度分别为板式节点的1.36和2.10倍,抗弯承载力和抗弯刚度也提高了10%~40%.FGC节点的抗压和抗弯能力明显优于板式节点,可用于较大跨度的单层铝合金网壳结构.
To make up for the deficiency of traditional gusset joints,a new aluminum alloy flower-gusset composite(FGC)joint was proposed by introducing a flower body.The experimental study on the in-plane axial compression performance of the FGC joint was carried out,and the elastic-plastic finite element analysis on the out-of-plane bending performance was studied.The bearing capacity calculation formula of the FGC joint under the combined action of the axial force and the bending moment was deduced.The results show that the compressive strength and the stiffness of the FGC joint are 1.36 and 2.10 times of those of the gusset joint,respectively,and the bending capacity and the bending stiffness are also increased by 10%to 40%because of the effective transfer of the internal force of the aluminum alloy beam web by the flower body.The FGC joint has better compression and bending capacity than the gusset joint,and can be used for single-layer aluminum alloy reticulated shell structure with large span.
作者
王钢
赵才其
江宗毅
马军
Wang Gang;Zhao Caiqi;Jiang Zongyi;Ma Jun(Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China)
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第6期923-927,共5页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金资助项目(51578136).
关键词
FGC节点
抗压性能
抗弯性能
承载力
flower-gusset composite(FGC)joint
compression performance
bending performance
bearing capacity
