摘要
为揭示双耳板焊接空心球节点受拉破坏机理,并建立其受拉承载力计算公式。针对8个双耳板焊接空心球节点进行轴心受拉极限承载力试验,并采用ABAQUS有限元分析软件对节点进行参数化数值分析,讨论节点几何尺寸对其承载力的影响。研究结果表明,在轴向拉力作用下,双耳板焊接空心球节点破坏形式为空心球开裂破坏,耳板与空心球连接处焊缝失效,且个别试件出现球面局部起皮。提出了适用于球外径在160~500mm的双耳板焊接空心球节点的受拉承载力计算参考公式,研究成果可为类似工程设计提供参考。
To reveal the tensile failure mechanism of double-ear plate welded hollow sphere joints and establish a calculation formula for their tensile bearing capacity,axial tensile ultimate bearing capacity tests were conducted on eight such joints.Using ABAQUS finite element software,a parametric numerical analysis was performed to discuss the influence of joint geometric dimensions on bearing capacity.The results showed that under axial tensile forces,the failure mode of the double-ear plate welded hollow sphere joints involved cracking of the hollow sphere and fail-ure of the weld at the connection between the ear plate and the hollow sphere,with some specimens exhibiting local-ized spalling on the sphere surface.A reference formula for calculating the tensile bearing capacity of double-ear plate welded hollow sphere joints with outer diameters ranging from 160 to 500 mm was proposed,providing valu-able insights for similar engineering designs.
作者
杨雪
刘佳敏
杜慧君
石琳
隋斌
YANG Xue;LIU Jiamin;DU Huijun;SHI Lin;SUI Bin(Power China Nuclear Engineering Co.,Ltd.,Jinan 251200,China;College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《低温建筑技术》
2024年第10期132-136,共5页
Low Temperature Architecture Technology
基金
山西省省筹资金资助回国留学人员科研项目(2023-175)
山西省基础研究计划资助项目(202203021211184)
吕梁市高层次科技人才引进计划专项项目(2023RC15)。
关键词
双耳板焊接
空心球节点
受拉承载力
空心球开裂
double plates welding
hollow spherical joint
tensile capacity:cracking of hollow sphere
