穹顶六角形节点力学性能研究  

Study on Mechanical Performance of Hexagon Joints

作　　者：苏颂 李建全 商承志 林星鑫 周锋[1] 王伟[1] SU Song;LI Jianquan;SHANG Chengzhi;LIN Xingxin;ZHOU Feng;WANG Wei(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;MCC5 Group Corporation Limited,Shanghai 201900,China;Hanjia Design Group Corp Shanghai Branch Company,Shanghai 200135,China)

机构地区：[1]同济大学土木工程防灾减灾全国重点实验室,上海200092 [2]中国五冶集团有限公司,上海201900 [3]汉嘉设计集团股份有限公司上海分公司,上海200135

出　　处：《结构工程师》2023年第6期115-124,共10页Structural Engineers

基　　金：中国中冶重大研发项目(中冶科〔2021〕5号)。

摘　　要：首先对穹顶六角形节点进行足尺模型静力试验,分析了节点在复杂受力工况下的应变发展过程,随后建立并验证了穹顶六角形节点有限元模型。通过有限元计算,对比分析了带肋节点和不带肋节点的应力分布、破坏模式和极限承载力,最后计算比较了节点在不同加劲构造下的极限承载力。研究成果不仅揭示了该类空间节点的承载性能和构造参数影响规律,同时所采用的研究方法也可以给同类节点的设计应用提供参考。A full scale static test of the dome hexagonal joint under a complex stress condition is carried out.Then the FE model of the dome hexagon joint is established and verified.The verified FE model is used to analyze the stress distributions,failure modes and ultimate load-carrying capacities of the stiffened and unstiffened hexagonal joints.Finally,the ultimate load-carrying capacities of the joints with different stiffener thicknesses are calculated and compared.The safety of this type of space node is checked,and the research method adopted herein can provide a reference for the design of similar nodes.

关 键 词：穹顶节点 焊接节点 力学性能 有限元分析 极限承载能力 

分 类 号：TU31[建筑科学—结构工程]